No. Registros Solicitud 1 5614 colombia



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DE - DESCRIPTORS: biochemistry-; C-13-C-12; carbon-; Cenozoic-; Colombia-; geochemistry-; isotope-ratios; isotopes-; lacustrine-environment; middle-Pleistocene; organic-carbon; organic-compounds; paleoclimatology-; Pleistocene-; Quaternary-; Sabana-de-Bogota-Basin; South-America; stable-isotopes; sulfur-; upper-Pleistocene

CC - CATEGORY CODES: 24-Quaternary-geology; 02D-Isotope-geochemistry

DT - DOCUMENT TYPE: Thesis-or-Dissertation

BL - BIB LEVEL: Monograph

NN - ANNOTATION: Includes 2 appendices.

IL - ILLUSTRATION: Refs: 82; illus. incl. 3 tables.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

AN - ACCESSION NUMBER: 1998-069564

UD - UPDATE CODE: 199824

Registro 5487 de 5614 - GeoRef 1997-2001

TI - TITLE: Geochemistry of heavy metals derived from sulfide gold minerals in the Marmato District, Colombia.

AU - AUTHORS: Prieto-Gloria-R

AF - AUTHOR AFFILIATION: INGEOMINAS, Santafe de Bogota, Colombia

BK - BOOK TITLE: In: 4th International symposium on Environmental geochemistry; proceedings.

BA - BOOK AUTHORS: Wanty-Richard-B (editor); Marsh-Sherman-P (editor); Gough-Larry-P (editor)

SO - SOURCE: Open-File Report - U. S. Geological Survey. Pages 72-73. 1997.

PB - PUBLISHER: U. S. Geological Survey. Reston, VA, United States. 1997.

RP - RESEARCH PROGRAM: USGS (Publications of the U. S. Geological Survey)

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: 4th International symposium on Environmental geochemistry. Vail, CO, United States. Oct. 5-10, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: bioavailability-; Caldas-Colombia; chemical-fractionation; Colombia-; concentration-; drainage-; geochemistry-; gold-ores; heavy-metals; Marmato-mining-district; massive-deposits; massive-sulfide-deposits; metal-ores; mining-; pollutants-; polluted-water; pollution-; South-America; surface-water; USGS-

CC - CATEGORY CODES: 22-Environmental-geology; 02A-General-geochemistry

DT - DOCUMENT TYPE: Abstract; Serial; Report; Conference-Document

BL - BIB LEVEL: Analytic

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0196-1497

CO - CODEN: XGROAG

RN - REPORT NUMBER: OF 97-0496

AV - AVAILABILITY: U. S. Geol. Surv., Denver, CO, United States

AN - ACCESSION NUMBER: 1998-068877

UD - UPDATE CODE: 199824

Registro 5488 de 5614 - GeoRef 1997-2001

TI - TITLE: Heavy metals in soils of the Sabana de Bogota, Columbia.

AU - AUTHORS: Gonzalez-Luz-Miryan; Vargas-Orlando

AF - AUTHOR AFFILIATION: INGEOMINAS, Bogota, Colombia

BK - BOOK TITLE: In: 4th International symposium on Environmental geochemistry; proceedings.

BA - BOOK AUTHORS: Wanty-Richard-B (editor); Marsh-Sherman-P (editor); Gough-Larry-P (editor)

SO - SOURCE: Open-File Report - U. S. Geological Survey. Pages 29. 1997.

PB - PUBLISHER: U. S. Geological Survey. Reston, VA, United States. 1997.

RP - RESEARCH PROGRAM: USGS (Publications of the U. S. Geological Survey)

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: 4th International symposium on Environmental geochemistry. Vail, CO, United States. Oct. 5-10, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: chemical-composition; Colombia-; concentration-; environmental-analysis; geochemistry-; heavy-metals; horizons-; pollutants-; pollution-; risk-assessment; Sabana-de-Bogota; soils-; South-America; toxic-materials; USGS-

CC - CATEGORY CODES: 22-Environmental-geology; 02C-Geochemistry-of-rocks,-soils,-and-sediments

DT - DOCUMENT TYPE: Abstract; Serial; Report; Conference-Document

BL - BIB LEVEL: Analytic

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0196-1497

CO - CODEN: XGROAG

RN - REPORT NUMBER: OF 97-0496

AV - AVAILABILITY: U. S. Geol. Surv., Denver, CO, United States

AN - ACCESSION NUMBER: 1998-068767

UD - UPDATE CODE: 199824

Registro 5489 de 5614 - GeoRef 1997-2001

TI - TITLE: Middle American Precambrian basement; a missing piece of the reconstructed 1 Ga orogen.

AU - AUTHORS: Ortega-Gutierrez-F; Keppie-J-D

AF - AUTHOR AFFILIATION: Universidad Nacional Autonoma de Mexico, Instituto de Geologia, Mexico City, Mexico

BK - BOOK TITLE: In: Geological Society of America, 1997 annual meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Abstracts with Programs - Geological Society of America. 29; 6, Pages 380. 1997.

PB - PUBLISHER: Geological Society of America (GSA). Boulder, CO, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: Geological Society of America, 1997 annual meeting. Salt Lake City, UT, United States. Oct. 20-23, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: Adirondack-Mountains; Amazon-Basin; Andes-; Baltica-; basement-; Canada-; Central-America; Colombia-; Eastern-Canada; Europe-; Garzon-Massif; Gondwana-; Grenvillian-Orogeny; Labrador-; Laurentia-; metamorphic-rocks; metasedimentary-rocks; Mexico-; Neoproterozoic-; New-York; Newfoundland-; North-America; Norway-; Oaxacan-Complex; orogeny-; P-T-conditions; Peru-; plate-tectonics; Precambrian-; Proterozoic-; reconstruction-; rifting-; Rodinia-; Scandinavia-; South-America; Sveconorwegian-Orogeny; Sweden-; unconformities-; United-States; upper-Precambrian; Western-Europe

CC - CATEGORY CODES: 18-Solid-earth-geophysics

DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document

BL - BIB LEVEL: Analytic

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States

IS - ISSN: 0016-7592

CO - CODEN: GAAPBC

AN - ACCESSION NUMBER: 1998-065733

UD - UPDATE CODE: 199823

Registro 5490 de 5614 - GeoRef 1997-2001

TI - TITLE: Enrique Hubach (1896-1968) y la geologia Colombiana

Translated Title: Enrique Hubach (1896-1968) and the geology of Colombia.

AU - AUTHORS: de-la-Espriella-Ricardo; Baquero-Armando-Espinosa

SO - SOURCE: Revista de la Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. 21; 81, Pages 503-519. 1997.

PB - PUBLISHER: Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. Bogota, Colombia. 1997.

CP - COUNTRY OF PUBLICATION: Colombia

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: Spanish

LS - LANGUAGE OF SUMMARY: English

AB - ABSTRACT: A biographic synthesis is given of the noted Chilean geologist, Enrique Hubach, focused on his role in the development of geology in Colombia, as a member of the National Scientific Commission and National Geological Service. This synthesis is related to his publications.

DE - DESCRIPTORS: areal-geology; bibliography-; biography-; Colombia-; history-; Hubach,-Enrique; South-America

CC - CATEGORY CODES: 13-Areal-geology

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 11

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0370-3908

CO - CODEN: RCCFAO

AN - ACCESSION NUMBER: 1998-063773

UD - UPDATE CODE: 199823

Registro 5491 de 5614 - GeoRef 1997-2001

TI - TITLE: Discovery history of the giant Cusiana and Cupiagua oil fields, Colombia.

AU - AUTHORS: De-Ath-Nicholas-G

AF - AUTHOR AFFILIATION: Triton Energy, Dallas, TX, United States

BK - BOOK TITLE: In: Papers from Petroleum geology conference 1995.

BA - BOOK AUTHORS: Teh-G-H (editor)

SO - SOURCE: Buletin Persatuan Geologi Malaysia = Bulletin Geological Society of Malaysia. 41; Pages 31-39. 1997.

PB - PUBLISHER: Geological Society of Malaysia. Kuala Lumpur, Malaysia. 1997.

CP - COUNTRY OF PUBLICATION: Malaysia

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: Petroleum geology conference 1995. Kuala Lumpur, Malaysia. Dec. 11-12, 1995.

LA - LANGUAGE: English

DE - DESCRIPTORS: anticlines-; Cenozoic-; Colombia-; Cupiagua-Field; Cusiana-Field; discoveries-; drilling-; folds-; geophysical-methods; geophysical-profiles; geophysical-surveys; giant-fields; history-; licensing-; lithostratigraphy-; Llanos-; natural-gas; oil-and-gas-fields; permeability-; petroleum-; petroleum-exploration; porosity-; production-; reservoir-rocks; seismic-methods; seismic-profiles; SEM-data; South-America; surveys-; Tauramena-Colombia; Tertiary-; well-logging

CC - CATEGORY CODES: 29A-Economic-geology,-geology-of-energy-sources; 20-Applied-geophysics

DT - DOCUMENT TYPE: Serial; Conference-Document

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: illus. incl. sects., strat. cols., sketch maps.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0126-6187

CO - CODEN: GSMBBK

AN - ACCESSION NUMBER: 1998-060282

UD - UPDATE CODE: 199822

Registro 5492 de 5614 - GeoRef 1997-2001

TI - TITLE: Changing isotopic composition of atmospheric CO2 in the Early Cretaceous; a terrestrial record.

AU - AUTHORS: Jahren-A-Hope; Arens-Nan-Crystal

AF - AUTHOR AFFILIATION: Georgia Institute of Technology, Department of Earth and Atmospheric Sciences, Atlanta, GA, United States

BK - BOOK TITLE: In: Geological Society of America, 1997 annual meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Abstracts with Programs - Geological Society of America. 29; 6, Pages 395. 1997.

PB - PUBLISHER: Geological Society of America (GSA). Boulder, CO, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: Geological Society of America, 1997 annual meeting. Salt Lake City, UT, United States. Oct. 20-23, 1997.

LA - LANGUAGE: English

AB - ABSTRACT: Using a recently-developed method for determining the carbon isotopic composition of atmospheric carbon dioxide directly from C3 vascular plant tissue, we report on the delta (super 13) C analysis of terrestrial carbon from sediments of Barremian-Aptian (early Cretaceous) age, Colombia, South America. From delta (super 13) C measurements made on bulk organic carbon and components specific to vascular land plants (vitrinite and cuticle) we construct a record of delta (super 13) C in atmospheric carbon dioxide for the Early Cretaceous that shows a striking negative excursion (= -7 %) in atmospheric carbon dioxide delta (super 13) C value in the mid-Aptian, followed by a rapid positive compensation (= +6 %) during the late Aptian. These trends are correlated by delta (super 13) C values measured for marine carbonates, which demonstrate a much less dramatic, but apparent, negative excursion and positive return indicated in the marine record during the middle-to-late Aptian. Simple source-mixing analysis suggests that modulation of photosynthetically fixed carbon is the most reasonable mechanism for explaining the mid-Aptian delta (super 13) C excursion of atmospheric carbon dioxide observed, which supports previously established climate-change hypotheses for this period involving changing global biomass productivity.

DE - DESCRIPTORS: biomass-; C-13-C-12; carbon-; carbon-dioxide; climate-change; Colombia-; Cretaceous-; isotope-ratios; isotopes-; Lower-Cretaceous; macerals-; measurement-; Mesozoic-; mixing-; paleoatmosphere-; paleoclimatology-; Plantae-; productivity-; South-America; stable-isotopes; terrestrial-environment; vitrinite-

CC - CATEGORY CODES: 12-Stratigraphy; 02D-Isotope-geochemistry

DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document

BL - BIB LEVEL: Analytic

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States

IS - ISSN: 0016-7592

CO - CODEN: GAAPBC

AN - ACCESSION NUMBER: 1998-051865

UD - UPDATE CODE: 199820

Registro 5493 de 5614 - GeoRef 1997-2001

TI - TITLE: Evaluation of Radarsat data for geological exploration.

AU - AUTHORS: Irving-R-E-L; Berger-Z; Toth-V-A

AF - AUTHOR AFFILIATION: Intermap Technologies, Nepean, ON, Canada

BK - BOOK TITLE: In: Geological Society of America, 1997 annual meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Abstracts with Programs - Geological Society of America. 29; 6, Pages 39. 1997.

PB - PUBLISHER: Geological Society of America (GSA). Boulder, CO, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: Geological Society of America, 1997 annual meeting. Salt Lake City, UT, United States. Oct. 20-23, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: Asia-; Australasia-; case-studies; Colombia-; exploration-; Far-East; geophysical-surveys; imagery-; Luzon-; mapping-; Middle-Magdalena-Basin; North-America; Papua-New-Guinea; petroleum-; petroleum-exploration; Philippine-Islands; Radarsat-; remote-sensing; satellite-methods; South-America; surveys-; terrains-; Western-Canada-Basin

CC - CATEGORY CODES: 20-Applied-geophysics

DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document

BL - BIB LEVEL: Analytic

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States

IS - ISSN: 0016-7592

CO - CODEN: GAAPBC

AN - ACCESSION NUMBER: 1998-051851

UD - UPDATE CODE: 199820

Registro 5494 de 5614 - GeoRef 1997-2001

TI - TITLE: Nonlocal tectonic geomorphology applied to oil exploration and earthquake prediction.

AU - AUTHORS: Guberman-Shelia; Pikovskii-Yuri-(Pikovskiy-Yuri); Rantsman-Elizabeth

AF - AUTHOR AFFILIATION: ParaGraph International, Campbell, CA, United States

BK - BOOK TITLE: In: Geological Society of America, 1997 annual meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Abstracts with Programs - Geological Society of America. 29; 6, Pages 443. 1997.

PB - PUBLISHER: Geological Society of America (GSA). Boulder, CO, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: Geological Society of America, 1997 annual meeting. Salt Lake City, UT, United States. Oct. 20-23, 1997.

LA - LANGUAGE: English

AB - ABSTRACT: The modeling and analysis of recent block structure of Earth's crust allow much room for a use of the neotectonic investigations in oil exploration and earthquake prediction. In this paper, we will illustrate it by the examples of the Andes and California. A hierarchical model of the recent block structure includes the following main components: 1) homogenous areas-blocks; 2) linear zones between blocks-morphostructural lineaments; 3) areas of intersection of the morphostructural lineaments-morphostructural knots. The most important feature of the development of the regional model (morphostructural zoning) is the establishment of hierarchy of blocks and of morphostructural lineaments dividing them. In our approach the prime element of morphostructure is a block. The position of the lineaments (the borders of the blocks) are determined not locally but as a part of a broad pattern. This increases the reliability of the lineaments as treks of the recent tectonic life. The morphostructural zoning was applied to the oil exploration problem in Andes of South America. We found that of 17 main oil and gas fields in the region 16 proved to coincide with morphostructural knots. We applied computer pattern recognition for recognizing knots which contain (or can contain) giant oil fields. As a result we found 11 knots which should contain giant oil fields but had not been developed yet (the prediction was published in 1986). The field test results will be presented: since 1986 only three new giant oil/gas fields were found in the Andes (South America)--Cano Limon, Cusiana-Cupiagua (Colombia) and Camisea (Peru). All three are located in predicted sites. There are four more sites in that region recognized as highly perspective and which are sites of special interest for future drilling. Morphostructural zoning was also applied to the problem of forecasting sites where strong earthquakes (E) will occur in the future. The prognostic map of California was published in 1976. Since that time 14 strong E (magnitude >6.0) occurred in California. 13 epicenters were located in the predicted areas and 4 out of them in new areas, where strong E were not known (for example, vicinity of Los Angeles).

DE - DESCRIPTORS: Andes-; block-structures; California-; Camisea-Field; Cano-Limon-Field; Colombia-; crust-; Cusiana-Cupiagua-Field; drilling-; earthquake-prediction; earthquakes-; faults-; geomorphology-; giant-fields; ground-motion; lineaments-; Los-Angeles-California; Los-Angeles-County-California; models-; neotectonics-; oil-and-gas-fields; patterns-; Peru-; petroleum-; petroleum-exploration; South-America; Southern-California; strong-motion; systems-; tectonics-; United-States

CC - CATEGORY CODES: 29A-Economic-geology,-geology-of-energy-sources; 16-Structural-geology

DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N340000; N340000; LONG: W1181500; W1181500.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States

IS - ISSN: 0016-7592

CO - CODEN: GAAPBC

AN - ACCESSION NUMBER: 1998-051737

UD - UPDATE CODE: 199820

Registro 5495 de 5614 - GeoRef 1997-2001

TI - TITLE: Geokriologicheskiye usloviya gor ekvatorial'nogo poyasa Zemli

Translated Title: Permafrost conditions of mountains in the equatorial belt of the Earth.

AU - AUTHORS: Gorbunov-A-P

SO - SOURCE: Geoekologiya: Inzhenernaya Geologiya. Gidrogeologiya. Geokriologiya. 1997; 6, Pages 83-89. 1997.

PB - PUBLISHER: Nauka [for the] Rossiyskaya Akademiya Nauk. Moscow, Russian Federation. 1997.

CP - COUNTRY OF PUBLICATION: Russian-Federation

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: Russian

AB - ABSTRACT: Direct evidence of permafrost rock occurrence on the highest summits of equatorial and subequatorial geographic belts are extremely scarce. But there are rather strong grounds to support their presence. The structure of geocryologic zonation of equatorial mountains is two-membered and that of subequatorial mountains is three-membered.

DE - DESCRIPTORS: Africa-; Andes-; Colombia-; East-Africa; Ecuador-; equatorial-region; glacial-features; Kenya-; Kilimanjaro-; Mount-Kenya; mountains-; permafrost-; South-America; Tanzania-

CC - CATEGORY CODES: 23-Geomorphology

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 19

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data supplied by ICSTI, Moscow, Russian Federation

IS - ISSN: 0869-7809

CO - CODEN: #03533

AN - ACCESSION NUMBER: 1998-050399

UD - UPDATE CODE: 199819

Registro 5496 de 5614 - GeoRef 1997-2001

TI - TITLE: The Caribbean-Colombian Cretaceous igneous province; the internal anatomy of an oceanic plateau.

AU - AUTHORS: Kerr-Andrew-C; Tarney-John; Marriner-Giselle-F; Nivia-Alvaro; Saunders-Andrew-D

AF - AUTHOR AFFILIATION: University of Leicester, Department of Geology, Leicester, United Kingdom

BK - BOOK TITLE: In: Large igneous provinces; continental, oceanic, and planetary flood volcanism.

BA - BOOK AUTHORS: Mahoney-John-J (editor); Coffin-Millard-F (editor)

SO - SOURCE: Geophysical Monograph. 100; Pages 123-144. 1997.

PB - PUBLISHER: American Geophysical Union. Washington, DC, United States. 1997.

RP - RESEARCH PROGRAM: DSDP (Deep Sea Drilling Project)

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: English

DE - DESCRIPTORS: Bolivar-Colombia; Caribbean-Plate; Caribbean-region; Colombia-; continental-drift; Cretaceous-; cumulates-; Deep-Sea-Drilling-Project; Farallon-Plate; Gorgona-komatiites; igneous-rocks; IPOD-; Leg-15; Leg-61; Leg-89; mafic-composition; Mesozoic-; metals-; plate-tectonics; plumes-; plutonic-rocks; rare-earths; South-America; ultramafics-

CC - CATEGORY CODES: 18-Solid-earth-geophysics

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N000000; N200000; LONG: W0600000; W0900000.

IL - ILLUSTRATION: Refs: 105; illus. incl. geol. sketch maps.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0065-8448

IB - ISBN: 0-87590-082-8

CO - CODEN: GPMGAD

AN - ACCESSION NUMBER: 1998-050380

UD - UPDATE CODE: 199819

Registro 5497 de 5614 - GeoRef 1997-2001

TI - TITLE: Hydraulic fracturing of high productivity wells in a tectonically active area.

AU - AUTHORS: Jackson-M-R; Rylance-M; Acosta-L-G

AF - AUTHOR AFFILIATION: BP Exploration (Colombia), COL, Colombia

BK - BOOK TITLE: In: 1997 SPE annual technical conference and exhibition; Drilling and completion.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: SPE - Society of Petroleum Engineers of AIME. 1997; Pages 425-438. 1997.

PB - PUBLISHER: Society of Petroleum Engineers of the American Institute of Mining, Metallurgical and Petroleum Engineers (AIME). Dallas, TX, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: 1997 SPE annual technical conference and exhibition. San Antonio, TX, United States. Oct. 5-8, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: arenite-; Casanare-Colombia; clastic-rocks; Colombia-; compressive-strength; Cupiagua-Field; Cusiana-Field; enhanced-recovery; flows-; formation-damage; hydraulic-fracturing; Llanos-; oil-and-gas-fields; oil-wells; petroleum-; petroleum-engineering; porosity-; production-; quartz-arenite; reservoir-properties; reservoir-rocks; sedimentary-rocks; South-America; stress-; tectonics-

CC - CATEGORY CODES: 29A-Economic-geology,-geology-of-energy-sources

DT - DOCUMENT TYPE: Serial; Conference-Document

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 13; illus. incl. 1 table.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0560-642X

CO - CODEN: #00733

AN - ACCESSION NUMBER: 1998-048468

UD - UPDATE CODE: 199819

Registro 5498 de 5614 - GeoRef 1997-2001

TI - TITLE: Case history; integration of rock mechanics, structural interpretation and drilling performance to achieve optimum horizontal well planning in the Llanos Basin, Colombia, South America.

AU - AUTHORS: Last-N-C; Lopez-J-D; Markley-M-E

AF - AUTHOR AFFILIATION: BP Colombia, COL, Colombia

BK - BOOK TITLE: In: 1997 SPE annual technical conference and exhibition; Drilling and completion.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: SPE - Society of Petroleum Engineers of AIME. 1997; Pages 359-374. 1997.

PB - PUBLISHER: Society of Petroleum Engineers of the American Institute of Mining, Metallurgical and Petroleum Engineers (AIME). Dallas, TX, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: 1997 SPE annual technical conference and exhibition. San Antonio, TX, United States. Oct. 5-8, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: case-studies; clastic-rocks; Colombia-; drilling-; flows-; horizontal-drilling; Llanos-; oil-wells; petroleum-; petroleum-engineering; pore-pressure; pressure-; production-; reservoir-properties; reservoir-rocks; rock-mechanics; sandstone-; sedimentary-rocks; South-America; stress-; tectonics-

CC - CATEGORY CODES: 29A-Economic-geology,-geology-of-energy-sources

DT - DOCUMENT TYPE: Serial; Conference-Document

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 20; illus. incl. 2 tables, sketch maps.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0560-642X

CO - CODEN: #00733

AN - ACCESSION NUMBER: 1998-048463

UD - UPDATE CODE: 199819

Registro 5499 de 5614 - GeoRef 1997-2001

TI - TITLE: Aporte de la palinologia y las palinofacies a la estratigrafia secuencial del Paleogeno en la cuenca de los Llanos Orientales, Colombia

Translated Title: Contribution of palynology and palynofacies to Paleogene sequence stratigraphy in the Llanos Orientales Basin, Colombia.

AU - AUTHORS: Ruiz-O; Pons-D; Santos-Fidalgo-L

AF - AUTHOR AFFILIATION: Univ. Colombia, Fac. Cienc., Medellin, Colombia

BK - BOOK TITLE: In: XIII jornadas de paleontologia; V reunion internacional paleozoico, PICG 351; libro de resumenes y excursiones

Translated Title: Thirteenth meeting on paleontology; Fifth Paleozoic international meeting. IGCP 351; abstract and field trip book.

BA - BOOK AUTHORS: Grandal-d-Anglade-A; Gutierrez-Marco-J-C; Santos-Fidalgo-L

SO - SOURCE: Pages 230-231. 1997.

PB - PUBLISHER: Soc. Esp. Paleontol.. Madrid, Spain. 1997.

CP - COUNTRY OF PUBLICATION: Spain

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: 5. reunion internacional, Proyecto 351 PICG, "Paleozoico inferior del noroeste de Gondwana" y 13 jornadas de paleontologia, "Fosiles de Galicia". La Coruna, Spain. 1997.

LA - LANGUAGE: Spanish

DE - DESCRIPTORS: biostratigraphy-; Cenozoic-; Colombia-; microfossils-; paleoenvironment-; Paleogene-; palynomorphs-; sequence-stratigraphy; South-America; Tertiary-

CC - CATEGORY CODES: 12-Stratigraphy

DT - DOCUMENT TYPE: Abstract; Book; Conference-Document

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 6

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from Instituto Geologico y Minero de Espana, Madrid, Spain

IB - ISBN: 84-605-6825-3

AN - ACCESSION NUMBER: 1998-047764

UD - UPDATE CODE: 199818

Registro 5500 de 5614 - GeoRef 1997-2001

TI - TITLE: Analogous middle Mesozoic deposits of the Magdalena Basin and Cordillera Oriental, Colombia, and Southwest New Mexico and Southeast Arizona, USA.

AU - AUTHORS: Bayona-German; Lawton-Timothy-F

AF - AUTHOR AFFILIATION: New Mexico State University, Department of Geological Sciences, Las Cruces, NM, United States

BK - BOOK TITLE: In: Geological Society of America, 1997 annual meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Abstracts with Programs - Geological Society of America. 29; 6, Pages 200. 1997.

PB - PUBLISHER: Geological Society of America (GSA). Boulder, CO, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: Geological Society of America, 1997 annual meeting. Salt Lake City, UT, United States. Oct. 20-23, 1997.

LA - LANGUAGE: English

AB - ABSTRACT: Paleotectonic and paleogeographic reconstructions for Early Jurassic through Early Cretaceous time suggest an equivalent tectonic evolution of the Magdalena Valley and Cordillera Oriental of Colombia and southwestern New Mexico and southeastern Arizona, preceding and during the breakup of Pangaea. This equivalence is supported by a broad similarity in lithology and age of correlative strata for these now widely separated regions of South and North America. Early to Middle Jurassic continental arc magmatism, related to subduction along the western margin of Pangaea, is recorded by thick intermediate volcanic and coeval intrusive rocks in both Colombia and southern Arizona. These volcanic, hypabyssal and intrusive rocks have been interpreted as products of stratovolcanoes and caldera complexes. Upper Jurassic to Lower Cretaceous marine, continental and mafic volcanic deposits in southern New Mexico and Arizona record a system of extensional basins, the Borderland rift system (= McCoy, Bisbee, and Chihuahua basins) associated with the opening of the Gulf of Mexico. A similar succession of Upper Jurassic continental deposits and Lower Cretaceous marine strata with some mafic intrusions is present in the Middle Magdalena and Cocuy basins of Colombia. Abrupt local changes in thickness of correlative Lower Cretaceous units indicate normal fault control of sedimentation. Volcanism abruptly decreased and extension concluded during late Early Cretaceous time in both areas. We infer that the Borderland rift and extensional basins of the Magdalena Valley and Cordillera Oriental formed as a once-contiguous rift system coordinate with opening of the Gulf of Mexico and proto-Caribbean basins. The north-trending rifts failed, whereas the Gulf of Mexico and proto-Caribbean opened, ultimately to form oceanic lithosphere in latest Jurassic and earliest Cretaceous time.

DE - DESCRIPTORS: Andes-; Arizona-; Atlantic-Ocean; Bisbee-Basin; calderas-; Chihuahua-Basin; Cocuy-Basin; Colombia-; correlation-; Cretaceous-; crust-; Eastern-Cordillera; extension-tectonics; faults-; Gulf-of-Mexico; hypabyssal-rocks; igneous-rocks; intrusions-; Jurassic-; lithosphere-; Magdalena-Basin; Magdalena-Valley; magmatism-; McCoy-Basin; Mesozoic-; middle-Mesozoic; New-Mexico; normal-faults; North-Atlantic; oceanic-crust; paleogeography-; Pangaea-; plate-tectonics; reconstruction-; rift-zones; sedimentation-; South-America; southeastern-Arizona; southwestern-New-Mexico; stratovolcanoes-; structural-controls; subduction-; tectonics-; thickness-; United-States; volcanic-features; volcanoes-

CC - CATEGORY CODES: 12-Stratigraphy

DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document

BL - BIB LEVEL: Analytic

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States

IS - ISSN: 0016-7592

CO - CODEN: GAAPBC

AN - ACCESSION NUMBER: 1998-043605

UD - UPDATE CODE: 199817

Registro 5501 de 5614 - GeoRef 1997-2001

TI - TITLE: (super 190) Pt- (super 186) Os isotope systematics of the upper mantle and plumes.

AU - AUTHORS: Brandon-Alan-D; Walker-Richard-J; Morgan-John; Norman-Marc; Prichard-Hazel-M

AF - AUTHOR AFFILIATION: University of Maryland, Department of Geology, College Park, MD, United States

BK - BOOK TITLE: In: AGU 1997 fall meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Eos, Transactions, American Geophysical Union. 78; 46, Suppl., Pages 837. 1997.

PB - PUBLISHER: American Geophysical Union. Washington, DC, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: American Geophysical Union, 1997 fall meeting. San Francisco, CA, United States. Dec. 8-12, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: chromitite-; Colombia-; Dona-Ana-County-New-Mexico; East-Pacific; geochemistry-; global-; Gorgona-Island; igneous-rocks; isotope-ratios; isotopes-; Kilbourne-Hole; magmas-; mantle-; mantle-plumes; metals-; New-Mexico; North-Pacific; Northeast-Pacific; ophiolite-; Os-186; Os-188-Os-186; Os-188-Os-187; osmiridium-; osmium-; Pacific-Ocean; peridotites-; platinum-; platinum-group; plutonic-rocks; Pt-190; radioactive-decay; radioactive-isotopes; South-America; stable-isotopes; ultramafics-; United-States; upper-mantle

CC - CATEGORY CODES: 02D-Isotope-geochemistry; 05A-Igneous-and-metamorphic-petrology

DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N030000; N030000; LONG: W0781900; W0781900.

LAT: N315700; N315900; LONG: W1065700; W1065900.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0096-3941

CO - CODEN: EOSTAJ

AN - ACCESSION NUMBER: 1998-042434

UD - UPDATE CODE: 199817

Registro 5502 de 5614 - GeoRef 1997-2001

TI - TITLE: (super 187) Re- (super 187) Os systematics of ultramafic rocks from Gorgona and Curacao; evidence for extreme Os isotopic heterogeneity in a Cretaceous large igneous province.

AU - AUTHORS: Walker-Robert-J; Storey-M; Kerr-A-C

AF - AUTHOR AFFILIATION: University of Maryland, Department of Geology, College Park, MD, United States

BK - BOOK TITLE: In: AGU 1997 fall meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Eos, Transactions, American Geophysical Union. 78; 46, Suppl., Pages 836-837. 1997.

PB - PUBLISHER: American Geophysical Union. Washington, DC, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: American Geophysical Union, 1997 fall meeting. San Francisco, CA, United States. Dec. 8-12, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: absolute-age; Antilles-; Caribbean-region; Colombia-; Cretaceous-; cumulates-; Curacao-; dates-; East-Pacific; geochemistry-; Gorgona-Island; heterogeneity-; igneous-rocks; isotopes-; komatiite-; large-igneous-provinces; lava-; Lesser-Antilles; mantle-plumes; Mesozoic-; metals-; Netherlands-Antilles; North-Pacific; Northeast-Pacific; osmium-; Pacific-Ocean; picrite-; platinum-group; plutonic-rocks; radioactive-isotopes; Re-187-Os-187; Re-Os; rhenium-; South-America; spinifex-texture; textures-; ultramafics-; volcanic-rocks; West-Indies

CC - CATEGORY CODES: 02D-Isotope-geochemistry; 05A-Igneous-and-metamorphic-petrology

DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N030000; N030000; LONG: W0781900; W0781900.

LAT: N120800; N122800; LONG: W0684500; W0690800.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0096-3941

CO - CODEN: EOSTAJ

AN - ACCESSION NUMBER: 1998-042433

UD - UPDATE CODE: 199817

Registro 5503 de 5614 - GeoRef 1997-2001

TI - TITLE: Contaminacion de suelos por hidrocarburos; un caso de estudio en Colombia

Translated Title: Hydrocarbon contamination of soils; a case study in Colombia.

AU - AUTHORS: Naranjo-J-L; Carral-P; Jimenez-Ballesta-R

AF - AUTHOR AFFILIATION: Univ. Caldas, Dep. Cienc. Geol., Manizales, Colombia

BK - BOOK TITLE: In: I. Congreso Iberico de geoquimica; VII Congreso de geoquimica de Espana

Translated Title: First Iberian congress of geochemistry; Seventh congress of the geochemistry of Spain.

CA - CORPORATE AUTHOR: Spain, Centro de Estudios y Experimentacion de Obras Publicas, Madrid,

SO - SOURCE: Pages 278-284. 1997.

PB - PUBLISHER: CEDEX. Madrid, Spain. 1997.

CP - COUNTRY OF PUBLICATION: Spain

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: 1. Congreso de geoquimica; 7. Congreso de geoquimica de Espana. Soria, Spain. 1997.

LA - LANGUAGE: Spanish

LS - LANGUAGE OF SUMMARY: English

DE - DESCRIPTORS: Colombia-; decontamination-; hydrocarbons-; infiltration-; organic-compounds; Pereira-Colombia; petroleum-products; pollution-; preventive-measures; reclamation-; soils-; South-America

CC - CATEGORY CODES: 22-Environmental-geology

DT - DOCUMENT TYPE: Book; Conference-Document

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 5; 1 table, block diag.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from Instituto Geologico y Minero de Espana, Madrid, Spain

IB - ISBN: 84-7790-284-4

AN - ACCESSION NUMBER: 1998-042024

UD - UPDATE CODE: 199816

Registro 5504 de 5614 - GeoRef 1997-2001

TI - TITLE: Agglutinated Foraminifera and sequence stratigraphy from the Chipaque Formation (Upper Cretaceous) of El Crucero section, Colombia, South America.

AU - AUTHORS: Vergara-Luis; Rodriguez-German; Martinez-Ignacio

AF - AUTHOR AFFILIATION: Universidad Nacional de Colombia, Departamento de Geosciencias, Bogota, Colombia

SO - SOURCE: Micropaleontology. 43; 2, Pages 185-201. 1997.

PB - PUBLISHER: American Museum of Natural History. New York, NY, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: English

DE - DESCRIPTORS: agglutinates-; Andes-; assemblages-; biostratigraphy-; Boyaca-Colombia; Campanian-; Cenomanian-; Chipaque-Formation; Colombia-; Cretaceous-; cross-sections; depositional-environment; Eastern-Cordillera; El-Crucero-Columbia; first-occurrence; Foraminifera-; Invertebrata-; Mesozoic-; microfossils-; paleoenvironment-; Protista-; range-; Senonian-; sequence-stratigraphy; South-America; terrigenous-materials; Upper-Cretaceous

CC - CATEGORY CODES: 12-Stratigraphy

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N050000; N060000; LONG: W0724500; W0733000.

IL - ILLUSTRATION: Refs: 70; illus. incl. charts, 2 plates, sketch map.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0026-2803

CO - CODEN: MCPLAI

AN - ACCESSION NUMBER: 1998-041485

UD - UPDATE CODE: 199816

Registro 5505 de 5614 - GeoRef 1997-2001

TI - TITLE: The marine Neogene of Colombia; major biostratigraphic, paleoceanographic and tectonic constraints.

AU - AUTHORS: Duque-Caro-H

AF - AUTHOR AFFILIATION: Duque Caro & Cia, Santafe de Bogota, Colombia

BK - BOOK TITLE: In: Main changes in marine and terrestrial Atlantic realm during Neogene; abstracts.

CA - CORPORATE AUTHOR: Spain, Comunidad Autonoma de Castilla y Leon, Salamanca,

SO - SOURCE: Pages 57-58. 1997.

PB - PUBLISHER: Junta Castilla y Leon. Salamanca, Spain. 1997.

CP - COUNTRY OF PUBLICATION: Spain

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: Second congress of the Regional Committee on Atlantic Neogene Stratigraphy (RCANS). Salamanca, Spain. Oct. 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: Atlantic-Ocean; benthonic-taxa; biogeography-; biostratigraphy-; Cenozoic-; Colombia-; East-Pacific; marine-environment; microfossils-; Neogene-; Pacific-Ocean; paleo-oceanography; paleobathymetry-; planktonic-taxa; South-America; tectonics-; Tertiary-; West-Atlantic

CC - CATEGORY CODES: 12-Stratigraphy; 16-Structural-geology

DT - DOCUMENT TYPE: Abstract; Book; Conference-Document

BL - BIB LEVEL: Analytic

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from Instituto Geologico y Minero de Espana, Madrid, Spain

IB - ISBN: 84-920984-6-5

UR - URL: (Full text) http://www-si.fct.unl.pt/units/dct/RCANS/RCANSindex.html

AN - ACCESSION NUMBER: 1998-038319

UD - UPDATE CODE: 199815

XURL - URLs, etc : URL; URL-ITEM (UR)

Registro 5506 de 5614 - GeoRef 1997-2001

TI - TITLE: Another look at great South American deep earthquakes; results from body wave inversion.

AU - AUTHORS: Estabrook-Charles-H

AF - AUTHOR AFFILIATION: GeoForschungsZentrum, Potsdam, Federal Republic of Germany

BK - BOOK TITLE: In: AGU 1997 fall meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Eos, Transactions, American Geophysical Union. 78; 46, Suppl., Pages 450-451. 1997.

PB - PUBLISHER: American Geophysical Union. Washington, DC, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: American Geophysical Union, 1997 fall meeting. San Francisco, CA, United States. Dec. 8-12, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: body-waves; Bolivia-; Bolivia-earthquake-1994; Colombia-; Colombia-earthquake-1970; deep-focus-earthquakes; digitization-; earthquakes-; elastic-waves; fault-planes; faults-; focal-mechanism; inverse-problem; P-waves; Peru-; Peru-Bolivia-earthquake-1963; rupture-; seismic-sources; seismic-waves; South-America; strain-

CC - CATEGORY CODES: 19-Seismology

DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document

BL - BIB LEVEL: Analytic

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0096-3941

CO - CODEN: EOSTAJ

AN - ACCESSION NUMBER: 1998-037857

UD - UPDATE CODE: 199815

Registro 5507 de 5614 - GeoRef 1997-2001

TI - TITLE: Does rupture in deep earthquakes propagate preferentially towards the bottom of subducting lithosphere?.

AU - AUTHORS: Houston-Heidi

AF - AUTHOR AFFILIATION: University of California at Los Angeles, Earth and Space Sciences, Los Angeles, CA, United States

BK - BOOK TITLE: In: AGU 1997 fall meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Eos, Transactions, American Geophysical Union. 78; 46, Suppl., Pages 449. 1997.

PB - PUBLISHER: American Geophysical Union. Washington, DC, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: American Geophysical Union, 1997 fall meeting. San Francisco, CA, United States. Dec. 8-12, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: Bolivia-; Bolivia-earthquake-1994; Colombia-; Colombia-earthquake-1970; deep-focus-earthquakes; earthquakes-; fault-planes; faults-; focal-mechanism; lithosphere-; Peru-; Peru-Bolivia-earthquake-1963; plate-tectonics; propagation-; rupture-; slabs-; South-America; subduction-

CC - CATEGORY CODES: 19-Seismology

DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document

BL - BIB LEVEL: Analytic

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0096-3941

CO - CODEN: EOSTAJ

AN - ACCESSION NUMBER: 1998-037848

UD - UPDATE CODE: 199815

Registro 5508 de 5614 - GeoRef 1997-2001

TI - TITLE: What's better than a broadband seismic station? A new system at Galeras Volcano, Colombia.

AU - AUTHORS: Seidl-D; Hellweg-M; Gomez-D; Torres-R; Pauly-B; Pauly-S; Rademacher-H

AF - AUTHOR AFFILIATION: BGR-SZGRF, Erlangen, Federal Republic of Germany

BK - BOOK TITLE: In: AGU 1997 fall meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Eos, Transactions, American Geophysical Union. 78; 46, Suppl., Pages 441. 1997.

PB - PUBLISHER: American Geophysical Union. Washington, DC, United States. 1997.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: American Geophysical Union, 1997 fall meeting. San Francisco, CA, United States. Dec. 8-12, 1997.

LA - LANGUAGE: English

DE - DESCRIPTORS: Andes-; broad-band-spectra; Colombia-; craters-; data-acquisition; data-processing; digitization-; earthquakes-; Galeras-; instruments-; observatories-; seismic-networks; seismographs-; South-America; teleseismic-signals; three-component-seismographs; volcanic-earthquakes; volcanoes-

CC - CATEGORY CODES: 19-Seismology

DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N011300; N011300; LONG: W0772200; W0772200.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0096-3941

CO - CODEN: EOSTAJ

AN - ACCESSION NUMBER: 1998-037792

UD - UPDATE CODE: 199815

Registro 5509 de 5614 - GeoRef 1997-2001

TI - TITLE: The nature and fate of natural resins in the geosphere; VII, NMR and Py-GC-MS characterization of soluble labdanoid polymers, isolated from Holocene class I resins.

AU - AUTHORS: Clifford-David-J; Hatcher-Patrick-G; Botto-Robert-E; Muntean-John-V; Michels-Beverly; Anderson-Ken-B

AF - AUTHOR AFFILIATION: Argonne National Laboratory, Chemistry Division, Argonne, IL, United States

SO - SOURCE: Organic Geochemistry. 27; 7-8, Pages 449-464. 1997.

PB - PUBLISHER: Pergamon. Oxford-New York, International. 1997.

CP - COUNTRY OF PUBLICATION: International

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: English

DE - DESCRIPTORS: Africa-; amber-; characterization-; Colombia-; East-Africa; exinite-; gas-chromatograms; instruments-; Kenya-; labdanoids-; macerals-; mass-spectra; maturity-; molecular-weight; Mombasa-Kenya; NMR-spectra; organic-minerals; polymers-; pyrolysis-; resinite-; resins-; Santander-Colombia; South-America; spectra-

CC - CATEGORY CODES: 02A-General-geochemistry

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 49; illus. incl. 3 tables.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0146-6380

AN - ACCESSION NUMBER: 1998-029278

UD - UPDATE CODE: 199811

Registro 5510 de 5614 - GeoRef 1997-2001

TI - TITLE: Oil- and gas-resource assessment in certain South American basins; an application of ARDS (ver. 5.0) to complex exploration and discovery histories.

AU - AUTHORS: Drew-Lawrence-J; Schuenemeyer-John-H

AF - AUTHOR AFFILIATION: U. S. Geological Survey, Reston, VA, United States

BK - BOOK TITLE: In: Quantitative prediction of petroleum resources and evaluation of exploration risk.

BA - BOOK AUTHORS: McCammon-Richard-B (editor)

SO - SOURCE: Nonrenewable Resources. 6; 4, Pages 295-315. 1997.

PB - PUBLISHER: Oxford University Press for the International Association for Mathematical Geology. New York, NY, United States. 1997.

RP - RESEARCH PROGRAM: USGSOP (Non-USGS publications with USGS authors)

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: English

DE - DESCRIPTORS: Argentina-; Atlantic-Ocean; Austral-Magallanes-Basin; Brazil-; Campos-Basin; Caribbean-Sea; Chile-; Colombia-; computer-programs; data-processing; drilling-; economics-; Ecuador-; evaluation-; measurement-; methods-; models-; Napo-Basin; natural-gas; Neuquen-Basin; North-Atlantic; oil-and-gas-fields; petroleum-; petroleum-exploration; prediction-; resources-; South-America; South-Atlantic; Venezuelan-Basin

CC - CATEGORY CODES: 29A-Economic-geology,-geology-of-energy-sources

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: S550000; N130000; LONG: W0350000; W0820000.

NN - ANNOTATION: Includes appendices.

IL - ILLUSTRATION: Refs: 14; illus. incl. 8 tables, sketch map.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0961-1444

AN - ACCESSION NUMBER: 1998-029239

UD - UPDATE CODE: 199811

Registro 5511 de 5614 - GeoRef 1997-2001

TI - TITLE: Late Quaternary glacial stades in the Cordillera Central, Colombia, based on glacial geomorphology, tephra-soil stratigraphy, palynology, and radiocarbon dating.

AU - AUTHORS: Thouret-Jean-Claude; van-der-Hammen-Thomas; Salomons-Barry; Juvigne-Etienne

AF - AUTHOR AFFILIATION: ORSTOM, Instituto Geofisico del Peru, Lima, Peru

SO - SOURCE: JQS. Journal of Quaternary Science. 12; 5, Pages 347-369. 1997.

PB - PUBLISHER: John Wiley and Sons for the Quaternary Research Association. Chichester, United Kingdom. 1997.

CP - COUNTRY OF PUBLICATION: United-Kingdom

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: English

DE - DESCRIPTORS: absolute-age; Andes-; C-14; carbon-; Cenozoic-; Central-Cordillera; Colombia-; dates-; glaciation-; glaciers-; Holocene-; igneous-rocks; isotopes-; last-glacial-maximum; lithofacies-; microfossils-; miospores-; moraines-; paleoclimatology-; paleoenvironment-; palynomorphs-; Pleistocene-; pollen-; pollen-analysis; pyroclastics-; Quaternary-; radioactive-isotopes; South-America; upper-Pleistocene; volcanic-rocks

CC - CATEGORY CODES: 24-Quaternary-geology

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N043000; N050000; LONG: W0751500; W0753000.

IL - ILLUSTRATION: Refs: 38; illus. incl. sects., 2 tables, geol. sketch map.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0267-8179

AN - ACCESSION NUMBER: 1998-029134

UD - UPDATE CODE: 199811

Registro 5512 de 5614 - GeoRef 1997-2001

TI - TITLE: National seismic network and the "Eje Cafetero" regional seismic network; two examples of Colombian efforts.

AU - AUTHORS: Mejia-Munos-Javier-German

AF - AUTHOR AFFILIATION: INGEOMINAS, Volcano and Seismological Observatory, Manizales, Colombia

SO - SOURCE: Bulletin of the International Institute of Seismology and Earthquake Engineering. 31; Pages 1-15. 1997.

PB - PUBLISHER: International Institute of Seismology and Earthquake Engineering. Tokyo, Japan. 1997.

CP - COUNTRY OF PUBLICATION: Japan

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: English

DE - DESCRIPTORS: Colombia-; earthquake-prediction; earthquakes-; Eje-Cafetero-seismic-network; monitoring-; observatories-; seismic-networks; seismicity-; South-America

CC - CATEGORY CODES: 19-Seismology

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 13; illus. incl. sketch maps.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0074-655X

CO - CODEN: IISBB2

AN - ACCESSION NUMBER: 1998-028861

UD - UPDATE CODE: 199811

Registro 5513 de 5614 - GeoRef 1997-2001

TI - TITLE: Sources of glacial moisture in Mesoamerica.

AU - AUTHORS: Bradbury-J-Platt

AF - AUTHOR AFFILIATION: U. S. Geological Survey, Denver, CO, United States

BK - BOOK TITLE: In: Climatic change; Mexico.

BA - BOOK AUTHORS: Urrutia-Fucugauchi-J (editor); Metcalfe-S-E (editor); Caballero-Miranda-M (editor)

SO - SOURCE: Quaternary International. 43-44; Pages 97-110. 1997.

PB - PUBLISHER: Pergamon. Oxford, United Kingdom. 1997.

RP - RESEARCH PROGRAM: USGSOP (Non-USGS publications with USGS authors)

CP - COUNTRY OF PUBLICATION: United-Kingdom

PY - PUBLICATION YEAR: 1997

CN - CONFERENCE INFORMATION: First international conference on Climatic change in Mexico. Taxco, Mexico. 1993.

LA - LANGUAGE: English

DE - DESCRIPTORS: algae-; atmospheric-precipitation; Cenozoic-; Central-America; Colombia-; diatoms-; Florida-; glaciation-; Guatemala-; Holocene-; Lake-Patzcuaro; Mexico-; miospores-; moisture-; paleoclimatology-; paleoenvironment-; paleotemperature-; palynomorphs-; Plantae-; pollen-; pollen-analysis; pollen-diagrams; Quaternary-; rain-; seasonal-variations; South-America; United-States; Venezuela-; winds-

CC - CATEGORY CODES: 24-Quaternary-geology

DT - DOCUMENT TYPE: Serial; Conference-Document

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 28; illus. incl. charts.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 1040-6182

AN - ACCESSION NUMBER: 1998-025665

UD - UPDATE CODE: 199810

Registro 5514 de 5614 - GeoRef 1997-2001

TI - TITLE: A rectorite-pyrophyllite-chlorite-illite assemblage in pelitic rocks from Colombia.

AU - AUTHORS: Brattli-B

AF - AUTHOR AFFILIATION: Norwegian University of Science and Technology, Department of Geology and Mineral Resources Engineering, Trondheim, Norway

SO - SOURCE: Clay Minerals. 32; 3, Pages 425-434. 1997.

PB - PUBLISHER: Mineralogical Society. London, United Kingdom. 1997.

CP - COUNTRY OF PUBLICATION: United-Kingdom

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: English

AB - ABSTRACT: In samples of slate from the Fomeque Formation near Bogota, Colombia, pyrophyllite was found to occur together with mixed-layered illite-smectite, chlorite and illite. Other minerals were quartz, K-feldspar, dolomite and pyrite. X-ray diffraction patterns revealed that the mixed-layer represents an R1 ordered rectorite with 80-90% illite layers. The microfabric is developed as a closely spaced cleavage in the phyllosilicate-rich rocks, and grades into a fracture cleavage with coarsening of the grain size. No cleavage was observed in the interbedded siltstones. It is suggested that the microfrabrics developed in these rocks correspond to high diagenetic to anchizonal conditions. The illite crystallinity from the slate has been measured on glycolated samples and ranges from 0.47 to 0.55 degrees Delta 2theta , with a mean of 0.52 degrees Delta 2theta . Based on the stability of R1 ordered rectorite, the illite crystallinity and the microfabric development, it is proposed that the rocks have been subjected to a temperature of approximately 200 degrees C at low pressure. At this temperature, pyrophyllite can only be stabilized at the expense of kaolinite and quartz if alpha H (sub 2) O<<1.

DE - DESCRIPTORS: Bogota-Colombia; chlorite-; chlorite-group; clay-mineralogy; clay-minerals; Colombia-; Cretaceous-; crystal-structure; fabric-; Fomeque-Formation; grain-size; illite-; Mesozoic-; mineral-assemblages; pelitic-texture; pyrophyllite-; rectorite-; sheet-silicates; silicates-; South-America; textures-; X-ray-diffraction-data

CC - CATEGORY CODES: 06A-Sedimentary-petrology

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N043800; N043800; LONG: W0740500; W0740500.

IL - ILLUSTRATION: Refs: 28; illus. incl. 1 table.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute.

IS - ISSN: 0009-8558

CO - CODEN: CLMIAF

AN - ACCESSION NUMBER: 1998-023696

UD - UPDATE CODE: 199809

Registro 5515 de 5614 - GeoRef 1997-2001

TI - TITLE: Seismic stratigraphy and structure of the Caribbean igneous province.

AU - AUTHORS: Mauffret-A; Leroy-S

AF - AUTHOR AFFILIATION: CNRS URA 1759, Departement de Geotectonique, Paris, France

SO - SOURCE: Tectonophysics. 283; 1-4, Pages 61-104. 1997.

PB - PUBLISHER: Elsevier. Amsterdam, Netherlands. 1997.

RP - RESEARCH PROGRAM: ODP (Ocean Drilling Program | DSDP (Deep Sea Drilling Project)

CP - COUNTRY OF PUBLICATION: Netherlands

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: English

AB - ABSTRACT: Multichannel seismic reflection profiles reveal the tectonic and stratigraphic complexity of the Caribbean province. A smooth reflector B" forms the top of widespread Cretaceous volcanic flows drilled during DSDP Leg 15 and ODP Leg 165. In addition we also show other seismic evidence of volcanism (sills and dipping horizons). The southern parts of the Venezuela and Colombia basins are underlain by rough basement that shows many characteristics of oceanic crust. Several thick volcanic plateaus separated by deep basins with thin crust comprise the Caribbean volcanic province. In the Venezuela basin only normal oceanic crust is present, but in other basins this crust is underlain by underplated volcanic material. The crust of the Venezuela basin is less than 5 km thick and was probably formed in the Pacific during the Jurassic. Refraction data indicate that a thin layer, 2V, is formed by original oceanic crust overlain by a thin volcanic layer. An intra basement reflection (sub-B") marks the top of original oceanic crust that is sandwiched between an upper volcanic layer and lower underplated material. This underplated layer forms a very thick layer, 3V, beneath the Beata and Nicaragua volcanic plateaus. The upper part of layer 3V is gabbroic and outcrops on the Beata ridge. The thickening occurs mainly in the high-velocity lower part of layer 3V and is attributed to the presence of magnesian rocks (picrites or ultramafic cumulates). A highly reflective horizon (R) is located at the top of this layer. We present a model where the Galapagos plume is 2500 km wide but has narrow heads that formed the Caribbean volcanic plateaus separated by deep basins. The Caribbean igneous province is compared to similar volcanic features in the Indian Ocean (Kerguelen plateau) and in the Western Pacific Ocean (Ontong Java plateau, Nauru and Pigafetta basins. The thick plateaus of the Caribbean province resemble the Kerguelen and Ontong Java plateaus, whereas the deep basins present some similarities with the Nauru and Pigafetta basins. The Caribbean igneous province is younger (90-75 Ma) than the Indian and Pacific plateaus (110-130 Ma); however, several geological evidences from land and geophysical offshore observations indicate that the onset of volcanic activity in the Caribbean province could be as old as 115 Ma.

DE - DESCRIPTORS: Atlantic-Ocean; Caribbean-Plate; Caribbean-region; Caribbean-Sea; crust-; data-acquisition; data-processing; Deep-Sea-Drilling-Project; geophysical-methods; geophysical-profiles; geophysical-surveys; igneous-rocks; intrusions-; Leg-15; Leg-165; multichannel-methods; North-Atlantic; Ocean-Drilling-Program; oceanic-crust; plate-tectonics; plateaus-; reflection-methods; seismic-methods; seismic-profiles; seismic-stratigraphy; sills-; surveys-; theoretical-models; underplating-; vertical-seismic-profiles; volcanic-rocks; volcanism-

CC - CATEGORY CODES: 20-Applied-geophysics; 05A-Igneous-and-metamorphic-petrology

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 104; illus. incl. sects., sketch maps.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands

IS - ISSN: 0040-1951

CO - CODEN: TCTOAM

AN - ACCESSION NUMBER: 1998-022898

UD - UPDATE CODE: 199809

Registro 5516 de 5614 - GeoRef 1997-2001

TI - TITLE: Mineralogical significance of fluids in channels of Colombian emeralds; a mass-spectrometric study.

AU - AUTHORS: Zimmermann-J-L; Giuliani-G; Cheilletz-A; Arboleda-C

AF - AUTHOR AFFILIATION: CNRS, Centre de Recherches Petrographiques et Geochimiques, Vandoeuvre-les-Nancy, France

SO - SOURCE: International Geology Review. 39; 5, Pages 425-437. 1997.

PB - PUBLISHER: Winston & Son. Silver Spring, MD, United States. 1997.

RP - RESEARCH PROGRAM: IGCP (International Geological Correlation Programme)

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1997

LA - LANGUAGE: English

AB - ABSTRACT: Quadrupolar mass-spectrometric study of fluids trapped in inclusions and channels is used to characterize the qualitative and quantitative composition of fluids within emeralds from 10 deposits located on the eastern and western margins of the Eastern Cordillera of Colombia. Fluids in channels and in fluid inclusions have the same qualitative composition. The bulk composition of the fluid phase is: H (sub 2) O (80 to 92 mol%), N (sub 2) (3 to 10%), CO (sub 2) (2.5 to 5%), H (sub 2) (1 to 5%), CO (0.1 to 1.5%), CH (sub 4) (<0.5%), organic compounds (<0.05%), and inert gases. Hydrogen and carbon monoxide in large part come from water and carbon dioxide reduction. Fluids trapped during emerald growth belong to an aquo-carbonic fluid phase with CO (sub 2) /N (sub 2) ratios near 1 (0.8 to 0.84 in fluid inclusions, 1 to 1.3 in channels). Fluid contents in channels are higher by approximately 20% in emeralds from the western group compared to those in the eastern deposits. The concentration of H (sub 2) O in channels in emeralds from the eastern group is lower (1.35


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