No. Registros Solicitud 1 5614 colombia

PB - PUBLISHER: [International Geological Congress]. [location varies], International. 2000.

RP - RESEARCH PROGRAM: IGC (International Geological Congress)

CP - COUNTRY OF PUBLICATION: International

PY - PUBLICATION YEAR: 2000

CN - CONFERENCE INFORMATION: Brazil 2000; 31st international geological congress. Rio de Janeiro, Brazil. Aug. 6-17, 2000.

LA - LANGUAGE: English

DE - DESCRIPTORS: Andes-; Chivor-Colombia; clastic-rocks; coexisting-minerals; Colombia-; Cretaceous-; Eastern-Cordillera; emerald-; euclase-; fluid-inclusions; fluid-phase; gems-; inclusions-; Lower-Cretaceous; marine-environment; Mesozoic-; mineral-composition; mineral-deposits,-genesis; mineral-exploration; mines-; nesosilicates-; orthosilicates-; P-T-conditions; ring-silicates; salinity-; sedimentary-rocks; shale-; silicates-; South-America; structural-controls; veins-

CC - CATEGORY CODES: 28A-Economic-geology,-geology-of-nonmetal-deposits

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

BL - BIB LEVEL: Analytic

NN - ANNOTATION: File G0801014.PDF.

ME - SOURCE MEDIUM: compact disc

RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute.

CO - CODEN: IGABBY

AN - ACCESSION NUMBER: 2004-048487

UD - UPDATE CODE: 200414

Registro 94 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Changes in microclimate tracked by the evolving vegetation cover of the Holocene beach ridges of the United Arab Emirates.

AU - AUTHORS: Kendall-C-G-S-C; Lakshmi-Venkat; Althausen-John; Alsharhan-Abdulrahman-S

AF - AUTHOR AFFILIATION: University of South Carolina, Department of Geological Sciences, Colombia, SC, United States

BK - BOOK TITLE: In: Desertification in the third millennium; proceedings.

BA - BOOK AUTHORS: Alsharhan-Abdulrahman-S (editor); Wood-Warren-W (editor); Goudie-Andrew-S (editor); Fowler-Abdulrahman (editor); Abdellatif-Eissa-M (editor)

SO - SOURCE: Pages 91-98. 2000.

PB - PUBLISHER: A.A. Balkema Publishers. Lisse, Netherlands. 2000.

CP - COUNTRY OF PUBLICATION: Netherlands

PY - PUBLICATION YEAR: 2000

CN - CONFERENCE INFORMATION: International conference on Toward better management of arid and semi-arid lands in the twenty-first century. Dubai, United Arab Emirates. Feb. 12-16, 2000.

LA - LANGUAGE: English

DE - DESCRIPTORS: Arabian-Peninsula; arid-environment; Asia-; beaches-; Cenozoic-; climate-change; dunes-; Holocene-; lithofacies-; paleoclimatology-; paleoecology-; Quaternary-; terrestrial-environment; United-Arab-Emirates; vegetation-

CC - CATEGORY CODES: 24-Quaternary-geology

DT - DOCUMENT TYPE: Book; Conference-Document

BL - BIB LEVEL: Analytic

IL - ILLUSTRATION: Refs: 17; illus. incl. geol. sketch maps.

RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute.

IB - ISBN: 90-5809-571-1

AN - ACCESSION NUMBER: 2004-045414

UD - UPDATE CODE: 200413

Registro 95 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: A three-dimensional gravity crustal model from the Colombian Andes.

AU - AUTHORS: Quintero-W; Chavez-R-E; Cifuentes-Nava-G

AF - AUTHOR AFFILIATION: Instituto Geografico Augustin Codazzi, Bogota, Colombia

BK - BOOK TITLE: In: AGU 1998 fall meeting.

BA - BOOK AUTHORS: Anonymous

SO - SOURCE: Eos, Transactions, American Geophysical Union. 79; 45, Suppl., Pages 797. 1998.

PB - PUBLISHER: American Geophysical Union. Washington, DC, United States. 1998.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 1998

CN - CONFERENCE INFORMATION: American Geophysical Union 1998 fall meeting. San Francisco, CA, United States. Dec. 6-10, 1998.

LA - LANGUAGE: English

DE - DESCRIPTORS: Andes-; Bouguer-anomalies; Colombia-; crust-; crust-mantle-boundary; geometry-; gravity-anomalies; lower-crust; mantle-; Mohorovicic-discontinuity; Northern-Andes; seismicity-; South-America; three-dimensional-models; upper-mantle

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

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

BL - BIB LEVEL: Analytic

RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute.

IS - ISSN: 0096-3941

CO - CODEN: EOSTAJ

AN - ACCESSION NUMBER: 2004-043930

UD - UPDATE CODE: 200413

Registro 96 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: The Cusiana Field, Llanos Foothills, Colombia; lessons learned from rapid development of a giant oil field.

AU - AUTHORS: Warren-E-A; Mitchell-A-W; Estrada-C; Merrill-R-C; Leel-W; Hervochon-J; Pulido-O

AF - AUTHOR AFFILIATION: BP, Sunbury-on-Thames, United Kingdom

BK - BOOK TITLE: In: Giant oil and gas fields of the decade, 1990-1999.

BA - BOOK AUTHORS: Halbouty-Michel-T (editor)

SO - SOURCE: AAPG Memoir. 78; Pages 139-140. 2003.

PB - PUBLISHER: American Association of Petroleum Geologists. Tulsa, OK, United States. 2003.

CP - COUNTRY OF PUBLICATION: United-States

PY - PUBLICATION YEAR: 2003

LA - LANGUAGE: English

DE - DESCRIPTORS: clastic-rocks; Colombia-; Cusiana-Field; geophysical-methods; giant-fields; history-; Llanos-; natural-gas; oil-and-gas-fields; petroleum-; sandstone-; sedimentary-rocks; seismic-methods; South-America

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

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N050000; N052000; LONG: W0723000; W0725000.

IL - ILLUSTRATION: Refs: 15

RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute.

IS - ISSN: 0271-8529

IB - ISBN: 0-89181-359-4

CO - CODEN: MAPGAN

AN - ACCESSION NUMBER: 2004-043457

UD - UPDATE CODE: 200412

Registro 97 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Caracterizacion mineralogica de los corindones de Mercaderes, Cauca; Colombia

Translated Title: Mineralogical characterization of corundum from Mercaderes, Cauca, Colombia.

AU - AUTHORS: Romero-Fernando-H; Rodriguez-Vargas-Andres-I

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

SO - SOURCE: Geologia Colombiana. 27; Pages 121-142. 2002.

PB - PUBLISHER: Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Geociencias. Bogota, Colombia. 2002.

CP - COUNTRY OF PUBLICATION: Colombia

PY - PUBLICATION YEAR: 2002

LA - LANGUAGE: Spanish

LS - LANGUAGE OF SUMMARY: English

AB - ABSTRACT: The corundum mines of Colombia are located in the southern part of the Cordillera Central, specifically in the Mercaderes-Rio Mayo region. These corundum occurrences are found in the alluvial deposits of the Rubi, Guabo, Paloverde, Limoncito, Chenequeta, Cocal, Monteoscuro, Monserrate and Honda streams, where the material from the Granatifera Tuff is eroded. The corundums show surface features indicating transport, corrosion and mechanical abrasion. These materials are not likely to be cogenetic with the lamprophyric host, but are possibly crustal fragments accidentally incorporated into the eruption magma. The presence of rutile and almandine-pyrope as crystalline inclusions within the corundums, and the existence of augite, kyanite and hercynite suggest a metamorphic origin possibly associated with the granulite xenoliths found in the Granatifera Tuff.

DE - DESCRIPTORS: alluvium-; Andes-; Cauca-Colombia; Central-Cordillera; characterization-; chemical-composition; Chenequeta-Creek; clastic-sediments; Cocal-Creek; Colombia-; corundum-; corundum-deposits; El-Guabo-Creek; El-Rubi-Creek; garnet-group; gems-; granulites-; igneous-rocks; inclusions-; kyanite-; La-Honda-Creek; Limoncito-Creek; Mercaderes-Colombia; metallogeny-; metamorphic-rocks; metamorphism-; mineral-assemblages; mineral-composition; mineral-deposits,-genesis; mineral-exploration; Monteoscuro-Creek; nesosilicates-; orthosilicates-; oxides-; Paloverde-Creek; petrography-; placers-; properties-; provenance-; pyroclastics-; Rio-Mayo-Colombia; rubies-; sediments-; SEM-data; silicates-; South-America; spectra-; stratigraphic-units; tuff-; volcanic-rocks; X-ray-diffraction-data

CC - CATEGORY CODES: 28A-Economic-geology,-geology-of-nonmetal-deposits; 01C-Mineralogy-of-non-silicates

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N014700; N014900; LONG: W0770900; W0771100.

IL - ILLUSTRATION: Refs: 45; illus. incl. 7 plates, 3 tables, sketch map.

RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute.

IS - ISSN: 0072-0992

CO - CODEN: GECBA7

AN - ACCESSION NUMBER: 2004-043427

UD - UPDATE CODE: 200412

Registro 98 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Interpretacion petrogenetica del gabro de Tragarepas al norte de Pacho; Cundinamarca, Colombia

Translated Title: Petrogenesis of the Tragarepas Gabbro north of Pacho; Cundinamarca, Colombia.

AU - AUTHORS: Navarrete-Rodriguez-Angela-Teresa; Moreno-Murillo-Juan-Manuel; Concha-Perdomo-Ana-Elena; Patarroyo-Gama-Pedro

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

SO - SOURCE: Geologia Colombiana. 27; Pages 109-120. 2002.

PB - PUBLISHER: Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Geociencias. Bogota, Colombia. 2002.

CP - COUNTRY OF PUBLICATION: Colombia

PY - PUBLICATION YEAR: 2002

LA - LANGUAGE: Spanish

LS - LANGUAGE OF SUMMARY: English

AB - ABSTRACT: Close to the Pacho town it is exposed a basic intrusive body of conic morphology, named as Gabbro Tragarepas intruding sedimentary rocks of Albian age. Petrographically intrusive rocks are composed of plagioclase labradorite, augite and hornblende, classified as pyroxenic, hornblendic gabbros; presents both granular and inter-granular and ofitic-subofitic textures. Also it is common to find hornblende, chlorite, calcite, epidote and pyrite as secondary minerals, formed by hydrothermal alteration, event recognized on all intrusive body. Geochemistry characterization shows that the gabbroic body belongs to sub-alkaline series with sodic tendency and tholeiitic character, which permits to classify the intrusive body as gabbro, gabbrodiorite and diorite with low alkalis. Tectonic discrimination diagrams were useful to establish the generation of the intrusive body by an intraplate distensive domain, as a consequence of the high basin's subsidence along the actual area of the Colombia Eastern Mountain Range during great part of the Mesozoic. The thickness of the continental crust originated deeper faults through which the magma rises from the mantle partial fusion. The petrographic and geochemistry results obtained from this work, show a great similarity with the other gabbroic bodies on the Eastern Mountain Range. Perhaps, they were emplaced along the same magmatic event.

DE - DESCRIPTORS: Albian-; Andes-; Cerro-Tragarepas; chemical-analysis; chemical-composition; chemical-ratios; Colombia-; Cretaceous-; Cundinamarca-Colombia; Eastern-Cordillera; gabbros-; genesis-; geochemistry-; hydrothermal-alteration; igneous-rocks; intrusions-; Lower-Cretaceous; magmas-; magmatism-; major-elements; Mesozoic-; metasomatism-; microscope-methods; mineral-assemblages; mineral-composition; minor-elements; Pacho-Colombia; partial-melting; petrography-; petrology-; plate-tectonics; plutonic-rocks; sedimentary-rocks; South-America; spectra-; stratigraphic-units; stratigraphy-; textures-; thin-sections; trace-elements; X-ray-fluorescence-spectra

CC - CATEGORY CODES: 05A-Igneous-and-metamorphic-petrology; 02C-Geochemistry-of-rocks,-soils,-and-sediments

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N045500; N052000; LONG: W0734500; W0743000.

IL - ILLUSTRATION: Refs: 21; illus. incl. 3 tables, sketch map.

RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute.

IS - ISSN: 0072-0992

CO - CODEN: GECBA7

AN - ACCESSION NUMBER: 2004-043426

UD - UPDATE CODE: 200412

Registro 99 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Equinoideos del miembro Calcareo Superior, formacion Tibasosa, en el area de Firavitoba (Boyaca, Colombia); morfologia y fauna asociada

Translated Title: Echinoids from the Calcareo Superior Member (Tibasosa Formation), Firavitoba (Boyaca, Colombia); morphology and associated fauna.

AU - AUTHORS: Patarroyo-Pedro

AF - AUTHOR AFFILIATION: Universidad Nacional de Colombia, Grupo de Investigaciones en Estratigrafia, Sedimentologia y Paleontologia, Bogota, Colombia

SO - SOURCE: Geologia Colombiana. 27; Pages 95-107. 2002.

PB - PUBLISHER: Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Geociencias. Bogota, Colombia. 2002.

CP - COUNTRY OF PUBLICATION: Colombia

PY - PUBLICATION YEAR: 2002

LA - LANGUAGE: Spanish

LS - LANGUAGE OF SUMMARY: English

AB - ABSTRACT: There is a relevant occurrence of equinoid fossils into the Upper Calcareous Member of the Tibasosa Formation with early Hauterivian (?) to late Aptian age according to ammonites. Heteraster cesarensis Cooke, were reported in the formation. But to Pseudocidaris cf. clunifera (Agassiz), Phymosoma sp., Holectypus (Coenholectypus) cf. planatus (Roemer), Globator cf. parryi (Hall), Phyllobrisus cf. angostatus (Clark), Arnaudaster colombianus Cooke and Douvillaster ? sp., are the first record to the Tibasosa Formation.

DE - DESCRIPTORS: Ammonoidea-; Andes-; Aptian-; assemblages-; biostratigraphy-; biozones-; Boyaca-Colombia; Calcareo-Superior-Member; Cephalopoda-; Colombia-; Cretaceous-; Echinodermata-; Echinoidea-; Echinozoa-; Firavitoba-Colombia; Globator-; Hauterivian-; Holectypus-; Invertebrata-; Lower-Cretaceous; Mesozoic-; Mollusca-; morphology-; Phymosoma-; Pseudocidaris-; sedimentary-rocks; South-America; stratigraphic-units; taxonomy-; Tetrabranchiata-; Tibasosa-Formation

CC - CATEGORY CODES: 12-Stratigraphy

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N051500; N054500; LONG: W0724500; W0734500.

IL - ILLUSTRATION: Refs: 25; illus. incl. 4 plates, sketch map.

RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute.

IS - ISSN: 0072-0992

CO - CODEN: GECBA7

AN - ACCESSION NUMBER: 2004-043425

UD - UPDATE CODE: 200412

Registro 100 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Sobre las sucesiones marinas del Aptiano en cercanias de Ortega y Ataco; Tolima, Colombia

Translated Title: Aptian marine sequences around Ortega and Ataco; Tolima, Colombia.

AU - AUTHORS: Patarroyo-Pedro

AF - AUTHOR AFFILIATION: Universidad Nacional de Colombia, Grupo de Investigaciones en Estratigrafia, Sedimentologia y Paleontologia, Bogota, Colombia

SO - SOURCE: Geologia Colombiana. 27; Pages 87-93. 2002.

PB - PUBLISHER: Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Geociencias. Bogota, Colombia. 2002.

CP - COUNTRY OF PUBLICATION: Colombia

PY - PUBLICATION YEAR: 2002

LA - LANGUAGE: Spanish

LS - LANGUAGE OF SUMMARY: English

AB - ABSTRACT: It is studied the stratigraphy of the successions containing the lowest Cretaceous marine rocks along the Urapa (Olaya Herrera) and Los Huevos (Ataco) creeks into the Caballos Formation. Overlying the Saldana Formation lies a succession variable in thickness that starts with continental deposits, followed by transitional and open sea, and finishing with transitional deposits. Into the marine rocks were identified Cheloniceras (Epicheloniceras) cf. pardoi Etayo-Serna, Ch. (E.) cf. bambucaense Etayo-Serna, Roloboceras cf. saxbyi Casey, bivalvs and gastropods. In the whole, this assemblage represents middle to late Aptian.

DE - DESCRIPTORS: Ammonoidea-; Andes-; Aptian-; Arthropoda-; assemblages-; Ataco-Colombia; biostratigraphy-; Bivalvia-; Caballos-Formation; Cephalopoda-; Cheloniceras-; Colombia-; correlation-; Cretaceous-; Crustacea-; depositional-environment; Invertebrata-; Los-Huevos-Creek; Lower-Cretaceous; Mandibulata-; marine-environment; Mesozoic-; microfossils-; mineral-composition; Mollusca-; morphology-; Ortega-Colombia; Ostracoda-; paleontology-; Roloboceras-; sedimentary-rocks; sedimentation-; sedimentology-; sequence-stratigraphy; South-America; stratigraphic-units; taxonomy-; Tetrabranchiata-; Tolima-Colombia; Urapa-Creek

CC - CATEGORY CODES: 12-Stratigraphy

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: S043000; S034500; LONG: W0744500; W0754500.

IL - ILLUSTRATION: Refs: 16; illus. incl. 1 plate, sketch map.

RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute.

IS - ISSN: 0072-0992

CO - CODEN: GECBA7

AN - ACCESSION NUMBER: 2004-043424

UD - UPDATE CODE: 200412

Registro 101 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Megaterideos (Mammalia, Xenarthra) do Quaternario de Cacapava do Sul, Rio Grande do Sul, com consideracoes sobre a flora associada

Translated Title: Quaternary Megatheriidae (Mammalia, Xenarthra) from Cacapava do Sul, Rio Grande do Sul, Brazil, with implications for associated floras.

AU - AUTHORS: Oliveira-Edison-Vicente; Dutra-Tania-Lindner; Zeltzer-Flora

AF - AUTHOR AFFILIATION: Pontificia Universidade Catolica do Rio Grande do Sul, Uruguaiana, Brazil

SO - SOURCE: Geologia Colombiana. 27; Pages 77-86. 2002.

PB - PUBLISHER: Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Geociencias. Bogota, Colombia. 2002.

CP - COUNTRY OF PUBLICATION: Colombia

PY - PUBLICATION YEAR: 2002

LA - LANGUAGE: Portuguese

LS - LANGUAGE OF SUMMARY: English

AB - ABSTRACT: Are identified Megatherium americanum and Eremotherium laurillardi for the Passo do Megaterio locality, in the Arroio Pessegueiro, Cacapava do Sul. The deposit is characterized by conglomerate sandstones, sandy siltstones and pelites, and the mammals are from the base of finning upward in the lower part of the profile. For the identification of Megatherium is suggested the exclusion of ambiguous characters such as "relatively deep mandibular body", and "femur transversely expanded proximally and distally", and that these genera could be distinguished, between other elements, on the basis of unique character combinations from femur and mandible. Derived characters in Megatherium are (1) symphysis extending to distal margin of m2; (2) depth of dentary, from alveolar margin of m3 to lowest point of ventral margin, higher than 195 mm;(3) medial femoral border prominently convex and, (4) patellar trochlea not medially extended. Derived characters in Eremotherium are: (1) symphysis extending to m1 or between m1 and m2; (2) depth of dentary, from alveolar margin of m3 to lowest point of ventral margin, lesser than 195 mm; (3) medial femoral border nearly rectilinear and, (4) patellar trochlea medially extended approximately until the level of the medial margin of the internal tibial condyle. It is possible that some species from South America such as Megatherium medinae and Megatherium lundi (or M. seijoi) could belong to Eremotherium rather than Megatherium. The presence of Megatherium americanum suggests a medial Pleistocene (Bonaerian) age for the Rio Grande do Sul site. Thus, caution must be held in the use of Eremotherium laurillardi as representing latest Pleistocene times, mainly support to biogeographic inferences.

DE - DESCRIPTORS: assemblages-; biostratigraphy-; bones-; Brazil-; Cacapava-do-Sul-Brazil; Cenozoic-; Chordata-; depositional-environment; ecosystems-; Edentata-; Eutheria-; facies-; Mammalia-; Megatheridae-; morphology-; paleoecology-; paleoenvironment-; paleontology-; Plantae-; Pleistocene-; Quaternary-; Rio-Grande-do-Sul-Brazil; sedimentology-; sediments-; South-America; stratigraphic-units; taxonomy-; Tetrapoda-; Theria-; Vertebrata-; Xenarthra-

CC - CATEGORY CODES: 11-Vertebrate-paleontology

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: S303000; S293000; LONG: W0541500; W0551500.

IL - ILLUSTRATION: Refs: 37; illus. incl. sketch map.

RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute.

IS - ISSN: 0072-0992

CO - CODEN: GECBA7

AN - ACCESSION NUMBER: 2004-043423

UD - UPDATE CODE: 200412

Registro 102 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: Estratigrafia cuantitativa de las formaciones Tablazo y Simiti en las localidades de Sachica (Boyaca) y Barichara; San Gil (Santander), Colombia

Translated Title: Quantitative stratigraphy of the Tablazo and Simiti Formations, Sachica (Boyaca) and Barichara; San Gil (Santander), Colombia.

AU - AUTHORS: Moreno-Giovanni; Sarmiento-Gustavo

AF - AUTHOR AFFILIATION: Universidad Nacional de Colombia, Grupo de Investigaciones en Estratigrafia, Sedimentologia y Paleontologia, Bogota, Colombia

SO - SOURCE: Geologia Colombiana. 27; Pages 51-76. 2002.

PB - PUBLISHER: Universidad Nacional de Colombia, Facultad de Ciencias, Departamento de Geociencias. Bogota, Colombia. 2002.

CP - COUNTRY OF PUBLICATION: Colombia

PY - PUBLICATION YEAR: 2002

LA - LANGUAGE: Spanish

LS - LANGUAGE OF SUMMARY: English

AB - ABSTRACT: This paper will discuss the stratigraphic sections, petrographic and sedimentary environment of Tablazo and Simiti formation in sections of Barichara-San Gil (Santander) and Sachica (Boyaca), with a review of the stratigraphic nomenclature. The Tablazo Formation is mainly comprised of shallow deposits marked with bioclastic fragments. Proximal offshore deposits characterize Simiti Formation with sporadic formation influenced by the shallow coastal environment.

DE - DESCRIPTORS: Ammonoidea-; Andes-; assemblages-; Barichara-Colombia; biostratigraphy-; biozones-; Boyaca-Colombia; Cephalopoda-; Churuvita-Formation; coastal-environment; Colombia-; correlation-; cyclostratigraphy-; deformation-; depositional-environment; folds-; Invertebrata-; microscope-methods; Milankovitch-theory; mineral-composition; models-; Mollusca-; Paja-Formation; paleogeography-; petrography-; quantitative-analysis; Sachica-Colombia; San-Gil-Colombia; Santander-Colombia; sea-level-changes; sedimentary-rocks; sedimentation-; sedimentation-rates; sedimentology-; sequence-stratigraphy; shallow-water-environment; Simiti-Formation; South-America; stratigraphic-units; Tablazo-Formation; tectonics-; Tetrabranchiata-; Tibasosa-Formation; transgression-; Une-Formation

CC - CATEGORY CODES: 12-Stratigraphy

DT - DOCUMENT TYPE: Serial

BL - BIB LEVEL: Analytic

MC - MAP COORDINATES: LAT: N050000; N060000; LONG: W0723000; W0734500.

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

RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute.

IS - ISSN: 0072-0992

CO - CODEN: GECBA7

AN - ACCESSION NUMBER: 2004-043422

UD - UPDATE CODE: 200412

Registro 103 de 5614 - GeoRef : 2002-2004/12

TI - TITLE: A proposal on the classification of systems tracts; application to the allostratigraphy and sequence stratigraphy of the Cretaceous Colombian Basin; Part 2, Barremian to Maastrichtian.

AU - AUTHORS: Guerrero-Javier

AF - AUTHOR AFFILIATION: Universidad Nacional de Colombia, Grupo de Investigaciones en Estratigrafia, Sedimentologia y Paleontologia, Bogota, Colombia