No. Registros Solicitud 1 5614 colombia

AU - AUTHORS: Lewicki-Jennifer-L; Fischer-Tobias; Williams-Stanley-N

AF - AUTHOR AFFILIATION: Pennsylvania State University, Department of Geosciences, University Park, PA, United States

SO - SOURCE: Bulletin of Volcanology. 62; 4-5, Pages 347-361. 2000.

PB - PUBLISHER: Springer International [for the] International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI). Heidelberg, International. 2000.

CP - COUNTRY OF PUBLICATION: International

PY - PUBLICATION YEAR: 2000

LA - LANGUAGE: English

DE - DESCRIPTORS: aliphatic-hydrocarbons; alkanes-; Andes-; annual-variations; boron-; C-13-C-12; carbon-; carbon-dioxide; carbon-monoxide; Colombia-; Cumbal-; D-H; deuterium-; fumaroles-; geochemistry-; ground-water; halogens-; He-4-He-3; helium-; hot-springs; hydrocarbons-; hydrochemistry-; hydrogen-; isotope-ratios; isotopes-; methane-; neon-; nitrogen-; noble-gases; O-18-O-16; organic-compounds; oxygen-; provenance-; S-34-S-32; South-America; springs-; stable-isotopes; sulfur-; temperature-; thermal-waters; volcanoes-; water-vapor

CC - CATEGORY CODES: 21-Hydrogeology; 02D-Isotope-geochemistry

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: illus. incl. 4 tables, geol. sketch maps.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from Geoline, Bundesanstalt fur Geowissenschaften und Rohstoffe, Hanover, Germany

IS - ISSN: 0258-8900

CO - CODEN: BUVOEW

AN - ACCESSION NUMBER: 2002-030508

UD - UPDATE CODE: 200211

Registro 592 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Unconventional PGE occurrences and PGE mineralization in the Great Dyke; metallogenic and economic aspects.

AU - AUTHORS: Stribrny-Bernhard; Wellmer-Friedrich-Wilhelm; Burgath-K-P; Oberthuer-Thomas; Tarkian-M; Pfeiffer-T

AF - AUTHOR AFFILIATION: Bundesanst. Geowiss. Rohst., Hanover, Federal Republic of Germany

BK - BOOK TITLE: In: Guenther Friedrich 70th birthday thematic issue.

BA - BOOK AUTHORS: Meyer-F-M (editor); Herzig-P-M (editor)

SO - SOURCE: Mineralium Deposita. 35; 2-3, Pages 260-281. 2000.

PB - PUBLISHER: Springer-Verlag. Berlin, Federal Republic of Germany. 2000.

CP - COUNTRY OF PUBLICATION: Federal-Republic-of-Germany

PY - PUBLICATION YEAR: 2000

LA - LANGUAGE: English

DE - DESCRIPTORS: Africa-; alaskan-type-deposits; Albania-; Andes-; base-metals; Central-Europe; chromite-ores; classification-; Colombia-; copper-ores; dunite-; Europe-; global-; Great-Dyke; host-rocks; igneous-rocks; intrusions-; kupferschiefer-type-deposits; layered-intrusions; metal-ores; metallogenic-provinces; metallogeny-; metals-; mineral-deposits,-genesis; mineral-exploration; mineralization-; mines-; Northwestern-Polish-Plain; ophiolite-; oxides-; palladium-ores; peridotites-; placers-; platinum-group; platinum-minerals; platinum-ores; plutonic-rocks; Poland-; Polish-Sudeten-Mountains; porphyry-copper; precious-metals; production-; raw-materials; reserves-; South-America; Southern-Africa; Southern-Europe; spatial-distribution; Sudeten-Mountains; ultramafics-; Zimbabwe-

CC - CATEGORY CODES: 27A-Economic-geology,-geology-of-ore-deposits

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 66; sects., 6 tables, geol. sketch map.

RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from Geoline, Bundesanstalt fur Geowissenschaften und Rohstoffe, Hanover, Germany

IS - ISSN: 0026-4598

CO - CODEN: MIDEBE

AN - ACCESSION NUMBER: 2002-030384

UD - UPDATE CODE: 200211

Registro 593 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Geodynamic significance of the Raspas metamorphic complex (SW Ecuador); geochemical and isotopic constraints.

AU - AUTHORS: Bosch-Delphine; Gabriele-Piercarlo; Lapierre-Henriette; Malfere-Jean-Louis; Jaillard-Etienne

AF - AUTHOR AFFILIATION: Universite de Montpellier II, Laboratoire de Tectonophysique, Montpellier, France

BK - BOOK TITLE: In: Andean geodynamics.

BA - BOOK AUTHORS: Woerner-Gerhard (editor); Jaillard-Etienne (editor)

SO - SOURCE: Tectonophysics. 345; 1-4, Pages 83-102. 2002.

PB - PUBLISHER: Elsevier. Amsterdam, Netherlands. 2002.

CP - COUNTRY OF PUBLICATION: Netherlands

PY - PUBLICATION YEAR: 2002

CN - CONFERENCE INFORMATION: 4th international symposium (ISAG) on Andean geodynamics. Gottingen, Federal Republic of Germany. Oct. 4-6, 1999.

LA - LANGUAGE: English

AB - ABSTRACT: The Raspas Metamorphic Complex of southwestern Ecuador is regarded as the southernmost remnant of oceanic and continental terranes accreted in the latest Jurassic-Early Cretaceous. It consists of variably metamorphosed rock types. (1) Mafic and ultramafic rocks metamorphosed under high-pressure (HP) conditions (eclogite facies) show oceanic plateau affinities with flat REE chondrite-normalized patterns, epsilon Nd (sub 150 Ma) ranging from +4.6 to 9.8 and initial Pb isotopic ratios intermediate between MORB and OIB. (2) Sedimentary rocks metamorphosed under eclogitic conditions exhibit LREE enriched patterns, strong negative Eu anomalies, Rb, Nb, U, Th, Pb enrichments, low epsilon Nd (sub 150 Ma) values (from -6.4 to -9.5), and high initial (super 87) Sr/ (super 86) Sr and (super 206,207,208) Pb/ (super 204) Pb isotopic ratios suggesting they were originally sediments derived from the erosion of an old continental crust. (3) Epidote-bearing amphibolites show N-MORB affinities with LREE depleted patterns, LILE, Zr, Hf and Th depletion, high epsilon Nd (sub 150 Ma) (>+10) and low initial Pb isotopic ratios. The present-day well defined internal structure of the Raspas Metamorphic Complex seems to be inconsistent with the formerly proposed interpretation of a "tectonic melange". The association of oceanic plateau rocks and continent-derived sediments both metamorphosed in HP conditions suggests that the thin edge of the oceanic plateau first entered the subduction zone and dragged sediments downward of the accretionary wedge along the Wadatti-Benioff zone. Subsequently, when its thickest part arrived into the subduction zone, the oceanic plateau jammed the subduction processes, due to its high buoyancy. In Ecuador and Colombia, the latest Jurassic-Early Cretaceous suture involves HP oceanic plateau rocks and N-MORB rocks metamorphosed under lower grades, suggesting a composite or polyphase nature for the latest Jurassic-Early Cretaceous accretionary event.

DE - DESCRIPTORS: accretionary-wedges; alkaline-earth-metals; amphibolites-; Andes-; Benioff-zone; continental-crust; Cretaceous-; crust-; eclogite-facies; Ecuador-; exotic-terranes; facies-; geochemistry-; geodynamics-; isotope-ratios; isotopes-; Jurassic-; lead-; lithogeochemistry-; Lower-Cretaceous; melange-; Mesozoic-; metabasite-; metaigneous-rocks; metals-; metamorphic-rocks; metapelite-; metasedimentary-rocks; Nd-144-Nd-143; neodymium-; ophiolite-complexes; P-T-conditions; Pb-206-Pb-204; Pb-207-Pb-204; Pb-208-Pb-204; plate-tectonics; radioactive-isotopes; rare-earths; Raspas-Complex; South-America; southwestern-Ecuador; Sr-87-Sr-86; stable-isotopes; strontium-; subduction-; subduction-zones; terranes-; trace-elements; Upper-Jurassic

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

DT - DOCUMENT TYPE: Serial; Conference-Document

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: S034500; S031500; LONG: W0794500; W0801000.

IL - ILLUSTRATION: Refs: 65; illus. incl. 2 tables, geol. sketch map.

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: 2002-029964

UD - UPDATE CODE: 200211

Registro 594 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Crustal make-up of the Northern Andes; evidence based on deep crustal xenolith suites, Mercaderes, SW Colombia.

AU - AUTHORS: Weber-Marion-B-I; Tarney-John; Kempton-Pamela-D; Kent-Raymond-W

AF - AUTHOR AFFILIATION: Universidad Nacional de Colombia, Escuela de Geociencias y Medio Ambiente, Medellin, Colombia

BK - BOOK TITLE: In: Andean geodynamics.

BA - BOOK AUTHORS: Woerner-Gerhard (editor); Jaillard-Etienne (editor)

SO - SOURCE: Tectonophysics. 345; 1-4, Pages 49-82. 2002.

PB - PUBLISHER: Elsevier. Amsterdam, Netherlands. 2002.

CP - COUNTRY OF PUBLICATION: Netherlands

PY - PUBLICATION YEAR: 2002

CN - CONFERENCE INFORMATION: 4th international symposium (ISAG) on Andean geodynamics. Gottingen, Federal Republic of Germany. Oct. 4-6, 1999.

LA - LANGUAGE: English

AB - ABSTRACT: Samples of the deep crust and upper mantle in the Northern Andes occur as abundant xenoliths in the Granatifera Tuff, a late Cenozoic vent in the Mercaderes area of SW Colombia. The lower crustal assemblage includes granulites, hornblendites, pyribolites, pyroxenites and gneisses; mafic rocks predominate, but felsic material is also common. P-T conditions for the pyribolite assemblages (i.e. Hbl + Fs/Scp + Grt + Cpx + Qtz + or - Bt), which are the best constrained, are 720-850 degrees C and 10-14 kbar, consistent with a deep-to-lower crustal origin. A notable feature of this xenolith suite is that it is dominated by hornblende. However, mineral reactions within the suite show that there is a transition from amphibolite to granulite facies, and there is a probable restite-melt relationship represented within the suite. However, the latter appears to be dominated by hornblende and garnet. The mafic rocks mostly lack the high Cr and Ni that would be expected of cumulates. Neither do they possess the positive Sr and Eu anomalies that would be consistent with resite or cumulate models for the lower crust. They bear greatest similarity to oceanic basalts (s.l.). The Rb contents of the xenoliths, whether mafic or silicic, are very low, and the more silicic members of the suite tend to have small positive Sr and Eu anomalies, which are transitional to adakitic compositions. The Sr isotopic compositions of the xenoliths lie between 0.704 and 0.705; however, the Nd isotopic compositions are much more variable, indicating considerable long-term heterogeneity. Few of the xenoliths can be compositionally recognised as metasedimentary; however, a sedimentary component is evident in the Pb isotopic compositions. Within these constraints, our favoured model is a deep crust formed by basaltic components (subduction-accretion?), and minor sediment, which is subject to an increase in thermal gradient to produce the granulites, any melting being dominated by hornblende-out reactions involving garnet. However, there is no evidence of any pervasive crustal melting, leading to the conclusion that the voluminous Andean magmatism arises from the mantle wedge.

DE - DESCRIPTORS: amphibolite-facies; Andes-; basaltic-composition; Central-Cordillera; Colombia-; crust-; facies-; felsic-composition; geochemical-anomalies; geochemistry-; Granatifera-Tuff; granulite-facies; hornblendite-; igneous-rocks; inclusions-; lower-crust; mafic-composition; magmatism-; Mercaderes-Colombia; metamorphic-rocks; metamorphism-; mineral-assemblages; Northern-Andes; Northern-Volcanic-Zone; P-T-conditions; Patia-Valley; plutonic-rocks; pyribolites-; South-America; southwestern-Colombia; ultramafics-; xenoliths-

CC - CATEGORY CODES: 05A-Igneous-and-metamorphic-petrology

DT - DOCUMENT TYPE: Serial; Conference-Document

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N014600; N014600; LONG: W0770900; W0770900.

NN - ANNOTATION: Includes appendices; NIGL Publ. No. 422.

IL - ILLUSTRATION: Refs: 107; illus. incl. 5 tables, geol. sketch map.

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: 2002-029963

UD - UPDATE CODE: 200211

Registro 595 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Cretaceous and Tertiary terrane accretion in the Cordillera Occidental of the Andes of Ecuador.

AU - AUTHORS: Hughes-Richard-A; Pilatasig-Luis-F

AF - AUTHOR AFFILIATION: British Geological Survey, Edinburgh, United Kingdom

BK - BOOK TITLE: In: Andean geodynamics.

BA - BOOK AUTHORS: Woerner-Gerhard (editor); Jaillard-Etienne (editor)

SO - SOURCE: Tectonophysics. 345; 1-4, Pages 29-48. 2002.

PB - PUBLISHER: Elsevier. Amsterdam, Netherlands. 2002.

CP - COUNTRY OF PUBLICATION: Netherlands

PY - PUBLICATION YEAR: 2002

CN - CONFERENCE INFORMATION: 4th international symposium (ISAG) on Andean geodynamics. Gottingen, Federal Republic of Germany. Oct. 4-6, 1999.

LA - LANGUAGE: English

AB - ABSTRACT: New field, geochronological, geochemical and biostratigraphical data indicate that the central and northern parts of the Cordillera Occidental of the Andes of Ecuador comprise two terranes. The older (Pallatanga) terrane consists of an early to late (?) Cretaceous oceanic plateau suite, late Cretaceous marine turbidites derived from an unknown basaltic to andesitic volcanic source, and a tectonic melange of probable late Cretaceous age. The younger (Macuchi) terrane consists of a volcanosedimentary island arc sequence, derived from a basaltic to andesitic source. A previously unidentified, regionally important dextral shear zone named the Chimbo-Toachi shear zone separates the two terranes. Regional evidence suggests that the Pallatanga terrane was accreted to the continental margin (the already accreted Cordillera Real) in Campanian times, producing a tectonic melange in the suture zone. The Macuchi terrane was accreted to the Pallatanga terrane along the Chimbo-Toachi shear zone during the late Eocene, probably in a dextral shear regime. The correlation of Cretaceous rocks and accretionary events in the Cordillera Occidental of Ecuador and Colombia remains problematical, but the late Eocene event is recognised along the northern Andean margin.

DE - DESCRIPTORS: accretion-; Andes-; andesites-; Angamarca-Group; basalts-; Cenozoic-; continental-margin; correlation-; Cretaceous-; Ecuador-; faults-; geochemistry-; igneous-rocks; island-arcs; lithogeochemistry-; Macuchi-Terrane; major-elements; melange-; Mesozoic-; Pallatanga-Terrane; sedimentary-rocks; shear-zones; South-America; tectonics-; terranes-; Tertiary-; trace-elements; turbidite-; volcanic-rocks; volcaniclastics-; Western-Cordillera

CC - CATEGORY CODES: 16-Structural-geology; 02C-Geochemistry-of-rocks,-soils,-and-sediments

DT - DOCUMENT TYPE: Serial; Conference-Document

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: S020000; S000000; LONG: W0783000; W0793000.

IL - ILLUSTRATION: Refs: 57; illus. incl. 2 tables, geol. sketch map.

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: 2002-029962

UD - UPDATE CODE: 200211

Registro 596 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Neogastropod molluscs from the Miocene of western Amazonia, with comments on marine to freshwater transitions in molluscs.

AU - AUTHORS: Vermeij-Geerat-J; Wesselingh-Frank-P

AF - AUTHOR AFFILIATION: University of California at Davis, Department of Geology, Davis, CA, United States

SO - SOURCE: Journal of Paleontology. 76; 2, Pages 265-270. 2002.

PB - PUBLISHER: Paleontological Society. Lawrence, KS, United States. 2002.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 2002

LA - LANGUAGE: English

AB - ABSTRACT: Two neogastropod species occur in brackish intervals in the Pebas Formation (late Middle to early Late Miocene) of Peru and Colombia in western Amazonia. Purpura woodwardi Roxo, 1924, is assigned to Melongena Schumacher, 1817 (Melongenidae), and ?Nassarius reductus (Nassariidae) is recognized as a new species. These gastropods are among the very few marine invaders in the otherwise freshwater Pebas fauna. The small number of marine to freshwater transitions among South American molluscs contrasts with the situation among South American fishes and southeast Asian molluscs. It may be related to seasonal fluctuations in water level and anoxia in present-day South American freshwater environments, as well as to predation and productivity.

DE - DESCRIPTORS: Amazon-Basin; Amazonas-Colombia; brackish-water-environment; Cenozoic-; Central-America; Colombia-; fresh-water-environment; Gastropoda-; Invertebrata-; Loreto-Peru; marine-environment; Melongena-; Melongena-woodwardi; Miocene-; Mollusca-; Nassarius-; Nassarius-reductus; Neogastropoda-; Neogene-; new-taxa; paleoecology-; Panama-; Panama-Canal-Zone; Peru-; Purpura-; Purpura-woodwardi; revision-; South-America; taxonomy-; Tertiary-

CC - CATEGORY CODES: 10-Invertebrate-paleontology

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

NN - ANNOTATION: Includes appendix.

IL - ILLUSTRATION: Refs: 48; illus.

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

IS - ISSN: 0022-3360

CO - CODEN: JPALAZ

AN - ACCESSION NUMBER: 2002-029909

UD - UPDATE CODE: 200211

Registro 597 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Deep structure of the Malpelo Ridge (Colombia) from wide-angle seismic data; preliminary results of the PAGANINI Experiment (1999).

AU - AUTHORS: Charvis-P; Flueh-E-R; Marcaillou-B; Hello-Y; Klaeschen-D; McIntosh-K

AF - AUTHOR AFFILIATION: UMR Geosciences Azur, Villefranche-sur-Mer, France

BK - BOOK TITLE: In: European Geophysical Society, 25th general assembly.

BA - BOOK AUTHORS: Anonymous

CA - CORPORATE AUTHOR: PAGANINI Scientific Party, International

SO - SOURCE: Geophysical Research Abstracts. 2; 2000.

PB - PUBLISHER: European Geophysical Society. Katlenburg-Lindau, Federal Republic of Germany. 2000.

CP - COUNTRY OF PUBLICATION: Federal-Republic-of-Germany

PY - PUBLICATION YEAR: 2000

CN - CONFERENCE INFORMATION: European Geophysical Society, 25th general assembly. Nice, France. April 25-29, 2000.

LA - LANGUAGE: English

DE - DESCRIPTORS: bathymetry-; Carnegie-Ridge; Cocos-Plate; Cocos-Ridge; Colombia-; East-Pacific; Galapagos-Rift; geophysical-surveys; hot-spots; hydrophones-; instruments-; Malpelo-Ridge; Nazca-Plate; Pacific-Ocean; PAGANINI-; Panama-fracture-zone; plate-boundaries; plate-tectonics; sea-floor-spreading; seismic-sources; seismographs-; signal-to-noise-ratio; South-America; spreading-centers; surveys-

CC - CATEGORY CODES: 18-Solid-earth-geophysics; 20-Applied-geophysics

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

BL - BIB LEVEL: Analytic

ME - SOURCE MEDIUM: compact disc

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

IS - ISSN: 1029-7006

AN - ACCESSION NUMBER: 2002-026203

UD - UPDATE CODE: 200210

Registro 598 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Contribucion geotermica de Miguel Maria Lisboa, 1852-53

Translated Title: Contribution to geothermal studies of Miguel Maria Lisboa, 1852-1853.

AU - AUTHORS: Urbani-P-Franco

AF - AUTHOR AFFILIATION: Universidad Central de Venezuela, CDIGN, Caracas, Venezuela

SO - SOURCE: Geotermia (Caracas). 18; Pages 8-12. 1986.

PB - PUBLISHER: Centro de Documentacion e Informacion Geotermica Nacional. Caracas, Venezuela. 1986.

CP - COUNTRY OF PUBLICATION: Venezuela

PY - PUBLICATION YEAR: 1986

LA - LANGUAGE: Spanish

DE - DESCRIPTORS: biography-; Brazil-; chemical-composition; Colombia-; Ecuador-; energy-sources; exploration-; geothermal-energy; geothermal-fields; geothermal-reservoirs; ground-water; hot-springs; Lisboa,-Miguel-Maria; mineral-waters; South-America; springs-; thermal-waters; Venezuela-

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

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 6; illus.

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

IS - ISSN: 0253-1062

AN - ACCESSION NUMBER: 2002-025199

UD - UPDATE CODE: 200210

Registro 599 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Apuntes sobre la estratigrafia y la tectonica de la cuenca inferior del Catatumbo Colombiano

Translated Title: Stratigraphy and tectonic outline of the lower Catatumbo Basin of Colombia.

AU - AUTHORS: Galvis-Vergara-Jaime; de-la-Espriella-Ricardo; Cortes-Delvalle-Ricardo; Ujueta-Guillermo

AF - AUTHOR AFFILIATION: Transversal 19 No. 61-33, Bogota, Colombia

SO - SOURCE: Revista de la Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. 25; 96, Pages 337-361. 2001.

PB - PUBLISHER: Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. Bogota, Colombia. 2001.

CP - COUNTRY OF PUBLICATION: Colombia

PY - PUBLICATION YEAR: 2001

LA - LANGUAGE: Spanish

AB - ABSTRACT: In addition to the traditional knowledge of the geology of the Colombian Lower Catatumbo Region, the present paper indicates the presence of different stratigraphic sequences at each side of the transcurrent SW-NE Rio de Oro (or San Lucas) fault. The sediments of the Eastern block are part of the Tibu-Cucuta basin, while the sediments of the Western block are similar to those present in the La Jagua area (Cesar Valley basin) and in the Machiques region (NW Zulia District) in Venezuela. There is another large N-S directional fault, the Catatumbo Fault, which is apparently cogenetic with the Rio de Oro Fault and other local faults. The shape of the regional structures is typical of areas where transcurrent tectonism is predominant.

DE - DESCRIPTORS: Barco-Formation; block-structures; Catatumbo-Basin; Catatumbo-Fault; Cenozoic-; Cogollo-Formation; Colombia-; Corboners-Formation; correlation-; Cretaceous-; Cucuta-Basin; Cuervos-Formation; Eocene-; faults-; Leon-Formation; lithostratigraphy-; Mesozoic-; Mirador-Formation; Paleogene-; sediments-; South-America; tectonics-; Tertiary-; Tibu-Basin; Venezuela-; Zulia-Venezuela

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

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N083000; N093000; LONG: W0730000; W0740000.

IL - ILLUSTRATION: Refs: 26; illus. incl. geol. sketch map.

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

IS - ISSN: 0370-3908

CO - CODEN: RCCFAO

AN - ACCESSION NUMBER: 2002-024664

UD - UPDATE CODE: 200210

Registro 600 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Palynological recognition of maximum flooding surfaces; two examples from the Cretaceous of Colombia.

AU - AUTHORS: Yepes-O; Jaramillo-C

AF - AUTHOR AFFILIATION: University of Missouri-Rolla, Department of Geology and Geophysics, Rolla, MO, United States

BK - BOOK TITLE: In: Transactions, Missouri Academy of Sciences; abstracts of papers presented by the senior and collegiate divisions.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Transactions of the Missouri Academy of Science. 29; Pages 83-84. 1995.

PB - PUBLISHER: Missouri Academy of Science. Columbia, MO, United States. 1995.