No. Registros Solicitud 1 5614 colombia
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PB - PUBLISHER: [International Geological Congress]. [location varies], International. 2000. RP - RESEARCH PROGRAM: IGCP (International Geological Correlation Programme | 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: applications-; baseline-studies; Bogota-Colombia; case-studies; chemical-elements; Colombia-; data-acquisition; data-processing; ecology-; enrichment-; environmental-analysis; faults-; geochemical-surveys; geochemistry-; human-activity; IGCP-; INGEOMINAS-; mapping-; mineral-exploration; programs-; South-America; surveys-; zoning- CC - CATEGORY CODES: 02A-General-geochemistry DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N043000; N050000; LONG: W0740000; W0743000. NN - ANNOTATION: File G1404031.PDF. IGCP Project No. 259 | 360. ME - SOURCE MEDIUM: compact disc RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. CO - CODEN: IGABBY AN - ACCESSION NUMBER: 2004-006040 UD - UPDATE CODE: 200402 Registro 225 de 5614 - GeoRef : 2002-2004/12 TI - TITLE: The eastern Pacific Ocean during the last glacial maximum. AU - AUTHORS: Martinez-J-I; Urrego-L-E; Bedoya-G AF - AUTHOR AFFILIATION: Universidad EAFIT, Medellin, Colombia BK - BOOK TITLE: In: Brazil 2000; 31st international geological congress; abstracts volume. BA - BOOK AUTHORS: Anonymous CA - CORPORATE AUTHOR: Quaternary Paleoceanography Team, SO - SOURCE: International Geological Congress, Abstracts = Congres Geologique International, Resumes. 31; Pages ; unpaginated. 2000. 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: algae-; Atlantic-Ocean; benthonic-taxa; Cenozoic-; climate-change; Coccolithophoraceae-; cores-; data-bases; data-processing; deep-sea-environment; East-Pacific; Foraminifera-; glacial-environment; glaciomarine-environment; Invertebrata-; last-glacial-maximum; marine-environment; marine-sediments; microfossils-; miospores-; modern-analogs; nannofossils-; Pacific-Ocean; paleo-oceanography; paleoclimatology-; palynomorphs-; Panama-Basin; planktonic-taxa; Plantae-; pollen-; Protista-; Quaternary-; Radiolaria-; reconstruction-; salinity-; sea-water; sea-surface-temperature; sediments-; upper-Quaternary CC - CATEGORY CODES: 24-Quaternary-geology DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document BL - BIB LEVEL: Analytic NN - ANNOTATION: File G2002063.PDF. ME - SOURCE MEDIUM: compact disc RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. CO - CODEN: IGABBY AN - ACCESSION NUMBER: 2004-004217 UD - UPDATE CODE: 200402 Registro 226 de 5614 - GeoRef : 2002-2004/12 TI - TITLE: Late Pleistocene benthonic Foraminifera from the Panama Basin, eastern Pacific Ocean. AU - AUTHORS: Betancur-J; Martinez-J-I; Ruiz-D; Bedoya-G AF - AUTHOR AFFILIATION: Universidad EAFIT, Departamento de Geologia, Medellin, Colombia BK - BOOK TITLE: In: Brazil 2000; 31st international geological congress; abstracts volume. BA - BOOK AUTHORS: Anonymous CA - CORPORATE AUTHOR: Quaternary Paleoceanography Team, SO - SOURCE: International Geological Congress, Abstracts = Congres Geologique International, Resumes. 31; Pages ; unpaginated. 2000. PB - PUBLISHER: [International Geological Congress]. [location varies], International. 2000. RP - RESEARCH PROGRAM: ODP (Ocean Drilling 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: benthonic-taxa; Cenozoic-; cores-; East-Pacific; Foraminifera-; glacial-environment; glaciomarine-environment; Invertebrata-; Leg-111; marine-environment; marine-sediments; microfossils-; Ocean-Drilling-Program; ODP-Site-677; Pacific-Ocean; paleo-oceanography; paleoecology-; Panama-Basin; Pleistocene-; Protista-; Quaternary-; sediments-; upper-Pleistocene CC - CATEGORY CODES: 24-Quaternary-geology DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N011203; N011209; LONG: W0834413; W0834414. NN - ANNOTATION: File G2002037.PDF. ME - SOURCE MEDIUM: compact disc RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. CO - CODEN: IGABBY AN - ACCESSION NUMBER: 2004-004197 UD - UPDATE CODE: 200402 Registro 227 de 5614 - GeoRef : 2002-2004/12 TI - TITLE: Gravimetric and tectonic interpretation of the La Virginia-Las Animas profile in south western Colombia. AU - AUTHORS: Bermudez-A; Garzon-M AF - AUTHOR AFFILIATION: INGEOMINAS, Geoscientific, Mining, Environmental and Nuclear, Research and Information Institute, Bogota, Colombia BK - BOOK TITLE: In: Brazil 2000; 31st international geological congress; abstracts volume. BA - BOOK AUTHORS: Anonymous SO - SOURCE: International Geological Congress, Abstracts = Congres Geologique International, Resumes. 31; Pages ; unpaginated. 2000. 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: Choco-Block; Colombia-; exotic-terranes; geophysical-methods; geophysical-profiles; geophysical-surveys; gravity-methods; La-Virginia-Colombia; Las-Animas-Colombia; magnetic-methods; South-America; southwestern-Colombia; surveys-; tectonics-; terranes- CC - CATEGORY CODES: 16-Structural-geology; 20-Applied-geophysics DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document BL - BIB LEVEL: Analytic NN - ANNOTATION: File G1703014.PDF. ME - SOURCE MEDIUM: compact disc RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. CO - CODEN: IGABBY AN - ACCESSION NUMBER: 2004-004130 UD - UPDATE CODE: 200402 Registro 228 de 5614 - GeoRef : 2002-2004/12 TI - TITLE: Paleogeography of Miocene western Amazonia; isotopic composition of molluscan shells constrains the influence of marine incursions. AU - AUTHORS: Vonhof-H-B; Wesselingh-F-P; Kaandorp-R-J-G; Davies-G-R; van-Hinte-J-E; Guerrero-J; Rasanen-M; Romero-Pittman-L; Ranzi-A AF - AUTHOR AFFILIATION: Vrije Universiteit, Faculty of Earth and Life Sciences, Amsterdam, Netherlands SO - SOURCE: Geological Society of America Bulletin. 115; 8, Pages 983-993. 2003. PB - PUBLISHER: Geological Society of America (GSA). Boulder, CO, United States. 2003. CP - COUNTRY OF PUBLICATION: United-States PY - PUBLICATION YEAR: 2003 LA - LANGUAGE: English AB - ABSTRACT: Strontium, oxygen, and carbon isotope compositions of well-preserved mollusks (bivalves) indicate a dominantly freshwater depositional setting for the lower Miocene-upper Miocene Pebas Formation in Western Amazonia. Molluscan (super 87) Sr/ (super 86) Sr ratios identify different freshwater sources. Andean runoff was the dominant water source in Miocene Western Amazonia, though there was occasional influx of waters from cratonic catchments. At only one stratigraphic level, isotope signals indicate increased (mesohaline) aquatic salinities, in concert with a clearly more saline molluscan faunal assemblage. Strontium isotope-based salinity estimates are surprisingly low when compared to other paleosalinity estimates based on the interpretation of (ichno)faunal assemblages and sedimentological structures. We propose that these seemingly contrasting observations can be unified if Miocene Western Amazonia was occupied by a long-lived (lacustrine) wetland system with a restricted connection, via the Los Llanos Basin, to the Caribbean Sea. Abundant runoff supplied fresh water to this system, which effectively blocked the influx of saline waters through the restricted marine connection to the north. Much like modern Lake Maracaibo, such a system could have been the site of microtidal currents and thus could have hosted brackish-water fauna in a dominantly freshwater depositional system. DE - DESCRIPTORS: alkaline-earth-metals; Amazon-Basin; assemblages-; biogenic-structures; biostratigraphy-; biozones-; Brazil-; C-13-C-12; carbon-; Cenozoic-; Colombia-; geochemistry-; Invertebrata-; isotope-ratios; isotopes-; lebensspuren-; metals-; Miocene-; Mollusca-; Neogene-; O-18-O-16; oxygen-; paleoenvironment-; paleogeography-; paleohydrology-; paleosalinity-; Pebas-Formation; Peru-; reconstruction-; sea-level-changes; sedimentary-structures; shells-; South-America; Sr-87-Sr-86; stable-isotopes; strontium-; Tertiary- CC - CATEGORY CODES: 12-Stratigraphy; 02D-Isotope-geochemistry DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic IL - ILLUSTRATION: Refs: 32; illus. incl. strat. cols., 3 tables, sketch map. RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States IS - ISSN: 0016-7606 CO - CODEN: BUGMAF AN - ACCESSION NUMBER: 2004-003461 UD - UPDATE CODE: 200402 Registro 229 de 5614 - GeoRef : 2002-2004/12 TI - TITLE: The emerald; Colombia's gem folklore, aid, and legend. AU - AUTHORS: Salloum-Habeeb AF - AUTHOR AFFILIATION: 58 Langbourne Place, Don Mills, ON, Canada SO - SOURCE: Canadian Rockhound (Winnipeg). 7; 2, 2003. PB - PUBLISHER: canadianrockhound.com. Winnipeg, MB, Canada. 2003. CP - COUNTRY OF PUBLICATION: Canada PY - PUBLICATION YEAR: 2003 LA - LANGUAGE: English DE - DESCRIPTORS: beryl-; Colombia-; emerald-; gems-; history-; popular-geology; ring-silicates; silicates-; South-America CC - CATEGORY CODES: 01A-General-mineralogy DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic NN - ANNOTATION: Accessed on Dec. 1, 2003. IL - ILLUSTRATION: Refs: 7; illus. ME - SOURCE MEDIUM: WWW RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. IS - ISSN: 1495-2963 UR - URL: (Full text) http://www.canadianrockhound.com/2003/02/cr0307201_emerald.html AN - ACCESSION NUMBER: 2004-003168 UD - UPDATE CODE: 200401 XURL - URLs, etc : URL; URL-ITEM (UR) Registro 230 de 5614 - GeoRef : 2002-2004/12 TI - TITLE: Additional bats from the middle Miocene La Venta fauna of Colombia. AU - AUTHORS: Czaplewski-Nicolas-J; Masanaru-Takai; Naeher-Tiffany-M; Shigehara-Nobuo; Setoguchi-Takeshi AF - AUTHOR AFFILIATION: University of Oklahoma, Oklahoma Museum of Natural History, Norman, OK, United States SO - SOURCE: Revista de la Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. 27; 103, Pages 263-282. 2003. PB - PUBLISHER: Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. Bogota, Colombia. 2003. CP - COUNTRY OF PUBLICATION: Colombia PY - PUBLICATION YEAR: 2003 LA - LANGUAGE: English LS - LANGUAGE OF SUMMARY: Spanish AB - ABSTRACT: By screenwashing sedimentary rocks from three localities in the middle Miocene Villavieja Formation, Rio Magdalena valley, Huila Department, Colombia, we collected several fossils that add to the knowledge of bats in the ca. 12-13 million-year-old La Venta fauna. The new specimens represent an emballonurid, a noctilionid, three phyllostomids, a thyropterid, three molossids, and a probable vespertilionid, and they came from a level (Monkey Beds) bracketed by dates of 12.5 million and 12.2 million years. The first known upper molars of Notonycteris magdalenensis reaffirm this species' close relationship with Vampyrum and Chrotopterus, as does a new species of Notonycteris based on two lower molars and characterized by smaller size than N. magdalenensis. Two upper molars of a primitive nectar-feeding bat represent another new taxon of Phyllostomidae (Glossophaginae), a new genus and species which provides the only Tertiary record for this group. An additional but not yet identifiable molossid adds to the bat list, and an unidentified probable vespertilionid is the first of its family recorded in the fauna. The La Venta fauna now includes 14 species of bats, several of which are indeterminate. DE - DESCRIPTORS: anatomy-; assemblages-; biostratigraphy-; Cenozoic-; Chiroptera-; Chordata-; Colombia-; Emballonuridae-; Eutheria-; fluvial-environment; Honda-Group; Huila-Colombia; La-Venta-fauna; La-Victoria-Formation; lacustrine-environment; Magdalena-Valley; Mammalia-; middle-Miocene; Miocene-; Molossidae-; morphology-; Neogene-; paleoecology-; Phyllostomidae-; range-; sedimentary-rocks; sediments-; South-America; stratigraphic-units; taxonomy-; teeth-; Tertiary-; Tetrapoda-; Theria-; Thyropteridae-; Vertebrata-; Villavieja-Formation CC - CATEGORY CODES: 11-Vertebrate-paleontology; 12-Stratigraphy DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N060000; N080000; LONG: W0740000; W0763000. NN - ANNOTATION: Includes appendices. IL - ILLUSTRATION: Refs: 57; illus. incl. 2 tables. RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. IS - ISSN: 0370-3908 CO - CODEN: RCCFAO AN - ACCESSION NUMBER: 2004-003163 UD - UPDATE CODE: 200401 Registro 231 de 5614 - GeoRef : 2002-2004/12 TI - TITLE: Breve historia de la cartografia geologica en el departamento de Antioquia, Colombia Translated Title: Brief history of geological mapping in the Antioquia Department, Colombia. AU - AUTHORS: Castro-P; Hermelin-M AF - AUTHOR AFFILIATION: Universidad EAFIT, Geologia Ambiental, Medellin, Colombia SO - SOURCE: Revista de la Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. 27; 103, Pages 245-261. 2003. PB - PUBLISHER: Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. Bogota, Colombia. 2003. CP - COUNTRY OF PUBLICATION: Colombia PY - PUBLICATION YEAR: 2003 LA - LANGUAGE: Spanish LS - LANGUAGE OF SUMMARY: English AB - ABSTRACT: Despite the mining tradition of the Department of Antioquia, its systematic geological mapping only started, by regional initiative, at the beginning of the twentieth century; these activities were carried out by the National Scientific Commission, the Antioquia Railways, the National School of Mines and the National Geological Survey and their successors. DE - DESCRIPTORS: alluvium-; Antioquia-Colombia; areal-geology; cartography-; clastic-sediments; Colombia-; education-; geomorphology-; gold-ores; government-agencies; history-; human-activity; Magdalena-Valley; mapping-; metal-ores; mineral-inventory; mining-; placers-; sediments-; South-America; stratigraphic-units; stratigraphy- CC - CATEGORY CODES: 14-Geologic-maps DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N060000; N080000; LONG: W0740000; W0770000. IL - ILLUSTRATION: Refs: 113; illus. incl. 1 table, geol. sketch maps. RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. IS - ISSN: 0370-3908 CO - CODEN: RCCFAO AN - ACCESSION NUMBER: 2004-003162 UD - UPDATE CODE: 200401 Registro 232 de 5614 - GeoRef : 2002-2004/12 TI - TITLE: Cubiertas piroclasticas Cenozoicas en la parte septentrional del valle medio del Magdalena y mesas de Santander Translated Title: Cenozoic pyroclastic sediments in the north-central Magdalena Valley and the Santander mesas. AU - AUTHORS: Garvis-Vergara-Jaime; Mojica-Corchuelo-Diego SO - SOURCE: Revista de la Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. 27; 103, Pages 217-223. 2003. PB - PUBLISHER: Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. Bogota, Colombia. 2003. CP - COUNTRY OF PUBLICATION: Colombia PY - PUBLICATION YEAR: 2003 LA - LANGUAGE: Spanish LS - LANGUAGE OF SUMMARY: English AB - ABSTRACT: In the northern part of the middle Magdalena river valley and in the Santander tablelands, there are volcanic rocks, whose relation with the Cretaceous sediments has not been clearly understood. In some sectors they have been mistaken Cenozoic sediments. In other places, they have been mapped as volcanic rocks of Jura-triassic age or they are without age estimates and in some sector of the cordilleran region in Santander, they received names of Cretaceous sedimentary formations. DE - DESCRIPTORS: Andes-; Bucaramanga-Colombia; Cenozoic-; Colombia-; Cretaceous-; Eastern-Cordillera; erosion-features; geomorphology-; Giron-Formation; granites-; igneous-rocks; imagery-; intrusions-; lahars-; lithostratigraphy-; Los-Santos-Formation; Magdalena-Valley; mass-movements; mesas-; Mesozoic-; mineral-composition; plutonic-rocks; pyroclastics-; remote-sensing; rhyolitic-composition; Santander-Colombia; satellite-methods; sediments-; South-America; stratigraphic-units; Tambor-Formation; textures-; volcanic-rocks CC - CATEGORY CODES: 05A-Igneous-and-metamorphic-petrology; 12-Stratigraphy DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N060000; N080000; LONG: W0720000; W0750000. IL - ILLUSTRATION: Refs: 7; illus. incl. 2 plates, geol. sketch maps. RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. IS - ISSN: 0370-3908 CO - CODEN: RCCFAO AN - ACCESSION NUMBER: 2004-003161 UD - UPDATE CODE: 200401 Registro 233 de 5614 - GeoRef : 2002-2004/12 TI - TITLE: La formacion del istmo de Panama; su incidencia en Colombia Translated Title: Formation of the Panama Isthmus and its impacts in Colombia. AU - AUTHORS: de-Porta-Jaime AF - AUTHOR AFFILIATION: Universidad de Barcelona, Facultad de Geologia, Barcelona, Spain SO - SOURCE: Revista de la Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. 27; 103, Pages 191-216. 2003. PB - PUBLISHER: Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. Bogota, Colombia. 2003. CP - COUNTRY OF PUBLICATION: Colombia PY - PUBLICATION YEAR: 2003 LA - LANGUAGE: Spanish LS - LANGUAGE OF SUMMARY: English AB - ABSTRACT: The first outlines of the Isthmus of Panama began in the middle Miocene. Its formation had impacts on paleography. The elevation of the Cordillera Oriental, which began between 12.9 and 11.8 million years ago, had its maximum intensity between 5 and 2.5 million years ago, causing changes in the hydrographic networks of the Amazon, Orinoco and Magdalena rivers. The record of a cold epoch in the Sabana de Bogota, dated at 2.7 million years ago, may correspond to a glacial stage of the upper Pliocene. The formation of the Itsthmus led to the great faunal exchange between North and South America. During the Pleistocene, along the Caribbean coasts of Colombia, a series of coral reefs, dated between 300,000 and 124,000 years, formed. DE - DESCRIPTORS: Andes-; Anthozoa-; assemblages-; Atlantic-Ocean; basins-; benthonic-taxa; biostratigraphy-; biozones-; Buliminacea-; Caribbean-Plate; Caribbean-region; Caribbean-Sea; Cenozoic-; Central-America; circulation-; Cocos-Plate; Coelenterata-; Colombia-; deformation-; Eastern-Cordillera; faults-; Foraminifera-; geomorphology-; Globigerinacea-; Globorotalia-; Globorotaliidae-; historical-geology; Invertebrata-; microfossils-; Miocene-; Mollusca-; Neogene-; nomenclature-; North-Atlantic; Pacific-Ocean; paleoclimatology-; paleoenvironment-; paleogeography-; Panama-; Panama-Isthmus; planktonic-taxa; plate-tectonics; Pleistocene-; Pliocene-; Protista-; Quaternary-; Radiolaria-; reefs-; Rotaliina-; sedimentary-rocks; South-America; stratigraphic-units; tectonics-; Tertiary-; uplifts-; Uvigerina-; Uvigerinidae-; Venezuela- CC - CATEGORY CODES: 12-Stratigraphy DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N060000; N100000; LONG: W0720000; W0810000. IL - ILLUSTRATION: Refs: 128; illus. incl. 4 tables, geol. sketch maps. RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. IS - ISSN: 0370-3908 CO - CODEN: RCCFAO AN - ACCESSION NUMBER: 2004-003160 UD - UPDATE CODE: 200401 Registro 234 de 5614 - GeoRef : 2002-2004/12 TI - TITLE: Supervivencia de mastodontes, megaterios y presencia del hombre en el valle del Magdalena (Colombia) entre 6000 y 5000 AP Translated Title: Survival of mastodons, ground sloths, and human activity in the Magdalena Valley between 6000 and 5000 BP. AU - AUTHORS: Correal-U-Gonzalo; van-der-Hammen-Thomas AF - AUTHOR AFFILIATION: Academia Colombiana de Ciencias Exactas, Fisicas y Naturales, COL, Colombia SO - SOURCE: Revista de la Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. 27; 103, Pages 159-164. 2003. PB - PUBLISHER: Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. Bogota, Colombia. 2003. CP - COUNTRY OF PUBLICATION: Colombia PY - PUBLICATION YEAR: 2003 LA - LANGUAGE: Spanish LS - LANGUAGE OF SUMMARY: English AB - ABSTRACT: An analysis of the stratigraphy and radiocarbon datings of an excavation in the El Totumo site (Tocaima, Cundinamarca, Colombia), where bones of Mastodon and Megatherium were found associated with stone artifacts of the El Abra type, brings to the conclusion that man and megafauna still cohabited in the area between 6000 and 5000 years before present. A stone statue of the early San Agustin Culture (perhaps of the ninth century before Christ), shows a face or mask that seems to represent an elephant; this may mean that they had a knowledge of the existence of Mastodons still in that time, or of an ancestral memory (cultural/tradition) of an earlier period. DE - DESCRIPTORS: absolute-age; archaeological-sites; archaeology-; C-14; carbon-; Cenozoic-; Chordata-; Colombia-; dates-; Edentata-; El-Totumo-Colombia; Eutheria-; Gastropoda-; Holocene-; Hominidae-; Homo-; Homo-sapiens; human-activity; Invertebrata-; isotopes-; Magdalena-Valley; Mammalia-; Mastodon-; Mastodontidae-; Mastodontoidea-; Megatheriidae-; middle-Holocene; Mollusca-; paleoecology-; paleoenvironment-; Primates-; Proboscidea-; Quaternary-; radioactive-isotopes; sediments-; South-America; stratigraphic-units; Tetrapoda-; Theria-; Vertebrata- CC - CATEGORY CODES: 24-Quaternary-geology; 11-Vertebrate-paleontology DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic IL - ILLUSTRATION: Refs: 5; illus. incl. 1 plate. RF - REFERENCE SOURCE: GeoRef, Copyright 2004, American Geological Institute. 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