No. Registros Solicitud 1 5614 colombia
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CC - CATEGORY CODES: 28A-Economic-geology,-geology-of-nonmetal-deposits DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France IS - ISSN: 0398-9011 AN - ACCESSION NUMBER: 2001-048150 UD - UPDATE CODE: 200115 Registro 5204 de 5614 - GeoRef 1997-2001 TI - TITLE: La Mission francaise AFG en Colombie Translated Title: The French AFG mission to Colombia. AU - AUTHORS: Giard-D SO - SOURCE: Revue de Gemmologie A.F.G.. 140; Pages 7-13. 2000. PB - PUBLISHER: Association Francaise de Gemmologie. Paris, France. 2000. CP - COUNTRY OF PUBLICATION: France PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: French DE - DESCRIPTORS: beryl-; Colombia-; emerald-; gems-; markets-; ring-silicates; silicates-; South-America CC - CATEGORY CODES: 28A-Economic-geology,-geology-of-nonmetal-deposits DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France IS - ISSN: 0398-9011 AN - ACCESSION NUMBER: 2001-048149 UD - UPDATE CODE: 200115 Registro 5205 de 5614 - GeoRef 1997-2001 TI - TITLE: La Route des emeraudes anciennes Translated Title: The road of the ancient emeralds. AU - AUTHORS: Giuliani-Gaston; Heuze-Michele; Chaussidon-Marc AF - AUTHOR AFFILIATION: Centre de Recherches Petrographiques et Geochimiques, FRA, France SO - SOURCE: Pour la Science. 277; Pages 58-65. 2000. PB - PUBLISHER: Eugene Belin. Paris, France. 2000. CP - COUNTRY OF PUBLICATION: France PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: French DE - DESCRIPTORS: Afghanistan-; Africa-; archaeology-; Asia-; Austria-; beryl-; Central-Europe; Colombia-; Egypt-; emerald-; Europe-; gems-; history-; Indian-Peninsula; ion-probe; isotope-ratios; isotopes-; mass-spectroscopy; mineral-economics; North-Africa; O-18-O-16; oxygen-; Pakistan-; popular-geology; provenance-; ring-silicates; silicates-; South-America; spectroscopy-; stable-isotopes; transportation- CC - CATEGORY CODES: 28A-Economic-geology,-geology-of-nonmetal-deposits DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France IS - ISSN: 0153-4092 AN - ACCESSION NUMBER: 2001-047477 UD - UPDATE CODE: 200115 Registro 5206 de 5614 - GeoRef 1997-2001 TI - TITLE: First East Gondwanan record of Strepsodus (Sarcopterygii, Rhizodontida) from the Lower Carboniferous Ducabrook Formation, central Queensland, Australia. AU - AUTHORS: Johanson-Z; Turner-S; Warren-A AF - AUTHOR AFFILIATION: Australian Museum, Sydney, N.S.W., Australia SO - SOURCE: Geodiversitas. 22; 2, Pages 161-169. 2000. PB - PUBLISHER: Editions Scientifiques du Museum. Paris, France. 2000. RP - RESEARCH PROGRAM: IGCP (International Geological Correlation Programme) CP - COUNTRY OF PUBLICATION: France PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: English LS - LANGUAGE OF SUMMARY: French AB - ABSTRACT: Postcranial rhizodontid remains from Middle Paddock (central Queensland, mid-Visean) show closest affinity to those of Strepsodus, known from the Carboniferous of Britain and eastern Canada, latest Devonian of Turkey and Upper Devonian of Colombia and Iran. The Queensland Strepsodus marks the appearance of the Rhizodontidae (a derived taxon within the Rhizodontida including Strepsodus, Rhizodus and Screbodinus) in East Gondwana; tetrapod, xenacanth and lungfish taxa from Middle Paddock also include groups not previously described from East Gondwana. This is a contribution to IGCP 421. DE - DESCRIPTORS: Australasia-; Australia-; biostratigraphy-; Carboniferous-; Chordata-; correlation-; Dinantian-; Drummond-Basin; Ducabrook-Formation; Gondwana-; IGCP-; Middle-Paddock-Australia; middle-Visean; Osteichthyes-; Paleozoic-; Pisces-; Queensland-Australia; Rhizodontida-; Sarcopterygii-; Strepsodus-; Vertebrata-; Visean- CC - CATEGORY CODES: 11-Vertebrate-paleontology DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic NN - ANNOTATION: IGCP Project No. 421. IL - ILLUSTRATION: Refs: 29 RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France IS - ISSN: 1280-9659 AN - ACCESSION NUMBER: 2001-046310 UD - UPDATE CODE: 200114 Registro 5207 de 5614 - GeoRef 1997-2001 TI - TITLE: Tselfatia formosa, teleosteen marin du Cretace (Pisces, Actinopterygii), et la position systematique des Tselfatiiformes ou Bananogmiiformes Translated Title: Tselfatia formosa, marine Cretaceous Teleost (Pisces, Actinopterygii), and the taxonomy of Tselfatiiformes or Bananogmiiformes. AU - AUTHORS: Taverne-L AF - AUTHOR AFFILIATION: Universite Libre de Bruxelles, Departement de Biologie Animale, Laboratoire de Morphologie Fonctionnelle, Brussels, Belgium SO - SOURCE: Geodiversitas. 22; 1, Pages 5-22. 2000. PB - PUBLISHER: Editions Scientifiques du Museum. Paris, France. 2000. CP - COUNTRY OF PUBLICATION: France PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: French LS - LANGUAGE OF SUMMARY: English AB - ABSTRACT: Some osteological characters of Tselfatia formosa are revised. They confirm that Tselfatia belongs to the Tselfatiiformes or Bananogmiiformes. The phylogenetic relationships of this order are studied. The Tselfatiiformes are primitive Clupeocephala. They appear apomorphic in regard to the Crossognathiformes and represent the plesiomorphic sister-group of a clade including the Otocephala (Clupeomorpha and Ostariophysi) and the Euteleostei. DE - DESCRIPTORS: Actinopterygii-; Africa-; Bananogmiiformes-; biostratigraphy-; bones-; Chordata-; cladistics-; Colombia-; Cretaceous-; Croatia-; Europe-; Italy-; marine-environment; Mesozoic-; Morocco-; North-Africa; North-America; Osteichthyes-; osteology-; phylogeny-; Pisces-; reconstruction-; South-America; Southern-Europe; taxonomy-; Teleostei-; Texas-; Tselfatia-formosa; Tselfatiiformes-; United-States; Upper-Cretaceous; Venezuela-; Vertebrata- CC - CATEGORY CODES: 11-Vertebrate-paleontology DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France IS - ISSN: 1280-9659 AN - ACCESSION NUMBER: 2001-046301 UD - UPDATE CODE: 200114 Registro 5208 de 5614 - GeoRef 1997-2001 TI - TITLE: Investigation of crustal structures in eastern Washington using gravity data. AU - AUTHORS: Mickus-Kevin-L AF - AUTHOR AFFILIATION: Southwest Missouri State University, Geology Department, Springfield, MO, United States BK - BOOK TITLE: In: Geological Society of America, South-Central Section, 34th annual meeting. BA - BOOK AUTHORS: Anonymous SO - SOURCE: Abstracts with Programs - Geological Society of America. 32; 3, Pages 36. 2000. PB - PUBLISHER: Geological Society of America (GSA). Boulder, CO, United States. 2000. CP - COUNTRY OF PUBLICATION: United-States PY - PUBLICATION YEAR: 2000 CN - CONFERENCE INFORMATION: Geological Society of America, South-Central Section, 34th annual meeting. Fayetteville, AR, United States. April 3-4, 2000. LA - LANGUAGE: English AB - ABSTRACT: Eastern Washington has undergone a long and complicated tectonic history that is still not completely understood. These events include the deposition of the Precambrian Belt Supergroup in some type of sedimentary basin, late Precambrian passive margin sedimentation (Windermere Group), formation of the Mesozoic Kootenay Arc in northeast Washington, addition of an island arc (Quesnellia) in north-central Washington in middle Mesozoic, thrusting in the late Cretaceous, development of Eocene metamorphic core complexes and the Miocene eruption of the Columbia River Plateau basalts. The deep crustal structure of the rocks forming the above events are only know in general terms and their location are unknown beneath the Columbia River Plateau basalts, which cover most of eastern Washington. To aid in determining the crustal structure of eastern Washington and particularly beneath the Colombia River Plateau basalts, a detailed gravity survey was conducted. Approximately 800 new gravity stations were collected between Spokane and Colfax, Washington. These data were merged with the sparse existing data, gridded and contoured to produce complete Bouguer gravity anomaly map. The additional data helps delineate a southern boundary for the Hauser Lake gneiss and the potential northeast extension of the St. Joe fault. Two-dimensional crustal structure models will be constructed that will aid in determining the location of the Precambrian cratonic boundary underneath the Columbia River Plateau basalts and the possible western extent of Belt Basin sediments. DE - DESCRIPTORS: basalts-; basins-; Belt-Supergroup; Bouguer-anomalies; Cenozoic-; Columbia-Plateau; Columbia-River; crust-; eastern-Washington; Eocene-; geophysical-methods; geophysical-surveys; gravity-anomalies; gravity-methods; Hauser-Lake-Gneiss; igneous-rocks; Kootenay-Arc; Mesoproterozoic-; Mesozoic-; metamorphism-; North-America; Paleogene-; passive-margins; plate-tectonics; Precambrian-; Proterozoic-; Saint-Joe-Fault; sedimentary-basins; surveys-; tectonics-; Tertiary-; United-States; upper-Precambrian; volcanic-rocks; Washington- CC - CATEGORY CODES: 16-Structural-geology; 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: 2001-042625 UD - UPDATE CODE: 200113 Registro 5209 de 5614 - GeoRef 1997-2001 TI - TITLE: The late Pleistocene in Amazonia; a paleoclimatic approach. AU - AUTHORS: Latrubesse-Edgardo-M AF - AUTHOR AFFILIATION: Universidade Federal de Goias, IESA, Goiania, GO, Brazil BK - BOOK TITLE: In: Southern Hemisphere paleo- and neoclimates. BA - BOOK AUTHORS: Smolka-Peter (editor); Volkheimer-Wolfgang (editor) SO - SOURCE: Pages 209-224. 2000. PB - PUBLISHER: Springer-Verlag. Berlin, Federal Republic of Germany. 2000. RP - RESEARCH PROGRAM: IGCP (International Geological Correlation Programme) CP - COUNTRY OF PUBLICATION: Federal-Republic-of-Germany PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: English DE - DESCRIPTORS: Amazon-Basin; Andes-; biogeography-; Brazil-; Caqueta-River; Cenozoic-; Chordata-; circulation-; Colombia-; fluvial-environment; glaciation-; humid-environment; IGCP-; Jurua-River; landscapes-; Mammalia-; microfossils-; Moa-River; paleoclimatology-; paleoecology-; paleohydrology-; palynomorphs-; Pleistocene-; Quaternary-; reconstruction-; sea-level-changes; sedimentation-; sediments-; South-America; Southern-Hemisphere; stream-sediments; terrestrial-environment; Tetrapoda-; transgression-; upper-Pleistocene; vegetation-; Vertebrata-; winds- CC - CATEGORY CODES: 24-Quaternary-geology DT - DOCUMENT TYPE: Book BL - BIB LEVEL: Analytic NN - ANNOTATION: IGCP Project No. 341. IL - ILLUSTRATION: Refs: 46; strat. col., 1 table, sketch maps. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. IB - ISBN: 3-540-66589-7 AN - ACCESSION NUMBER: 2001-033212 UD - UPDATE CODE: 200110 Registro 5210 de 5614 - GeoRef 1997-2001 TI - TITLE: Pole-equator-pole paleoclimates of the Americas; PEP 1 a review. AU - AUTHORS: Markgraf-V AF - AUTHOR AFFILIATION: University of Colorado, Institute of Arctic and Alpine Research, Boulder, CO, United States BK - BOOK TITLE: In: Southern Hemisphere paleo- and neoclimates. BA - BOOK AUTHORS: Smolka-Peter (editor); Volkheimer-Wolfgang (editor) SO - SOURCE: Pages 103-123. 2000. PB - PUBLISHER: Springer-Verlag. Berlin, Federal Republic of Germany. 2000. RP - RESEARCH PROGRAM: IGCP (International Geological Correlation Programme) CP - COUNTRY OF PUBLICATION: Federal-Republic-of-Germany PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: English DE - DESCRIPTORS: algae-; California-; Cenozoic-; climate-change; Colombia-; diatoms-; El-Nino; fluctuations-; global-change; high-resolution-methods; hydrology-; IGCP-; Inyo-County-California; La-Nina; microfossils-; miospores-; North-America; Owens-Lake; paleoclimatology-; paleohydrology-; palynomorphs-; Plantae-; pollen-; Quaternary-; Sabana-de-Bogota; South-America; Southern-Hemisphere; thermal-anomalies; United-States; upper-Quaternary; Western-Hemisphere CC - CATEGORY CODES: 24-Quaternary-geology DT - DOCUMENT TYPE: Book BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N361500; N363500; LONG: W1174500; W1180300. NN - ANNOTATION: IGCP Project No. 341. IL - ILLUSTRATION: Refs: 161; illus. incl. sketch maps. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. IB - ISBN: 3-540-66589-7 AN - ACCESSION NUMBER: 2001-033205 UD - UPDATE CODE: 200110 Registro 5211 de 5614 - GeoRef 1997-2001 TI - TITLE: Por la paz en Colombia; environmental awakening in Santafe de Bogota. AU - AUTHORS: Rivera-Orlando AF - AUTHOR AFFILIATION: Bureau of Mine Reclamation, Florida Department of Environmental Protection, USA, United States SO - SOURCE: Bulletin - Society of Wetland Scientists (U.S.). 17; 2, Pages 12-14. 2000. PB - PUBLISHER: Society of Wetland Scientists. Lawrence, KS, United States. 2000. CP - COUNTRY OF PUBLICATION: United-States PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: English DE - DESCRIPTORS: abandoned-mines; Bogota-Colombia; Colombia-; ecology-; ecosystems-; erosion-; erosion-control; hydrology-; land-management; mines-; paludal-environment; preventive-measures; reclamation-; rivers-and-streams; sediment-transport; South-America; terrestrial-environment; vegetation-; wetlands- CC - CATEGORY CODES: 22-Environmental-geology DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N043800; N043800; LONG: W0740500; W0740500. IL - ILLUSTRATION: illus. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. IS - ISSN: 0732-9393 AN - ACCESSION NUMBER: 2001-031902 UD - UPDATE CODE: 200110 Registro 5212 de 5614 - GeoRef 1997-2001 TI - TITLE: Influence of the realistic description of soil water-holding capacity on the global water cycle in a GCM. AU - AUTHORS: Ducharne-Agnes; Laval-Katia AF - AUTHOR AFFILIATION: CNRS, Laboratoire de Meteorologie Dynamique, Paris, France SO - SOURCE: Journal of Climate. 13; 24, Pages 4393-4413. 2000. PB - PUBLISHER: American Meteorological Society. Boston, MA, United States. 2000. CP - COUNTRY OF PUBLICATION: United-States PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: English AB - ABSTRACT: The sensitivity of the hydrological cycle to soil water-holding capacity (WHC) is investigated using the Laboratoire de Meteorologie Dynamique General Circulation Model (LMD GCM) coupled to a land surface model (LSM). A reference simulation (REF), with WHCs equal to 150 mm globally (except in deserts where it is set to 30 mm), is compared to two perturbation simulations using datasets with realistic WHC distributions: the "available WHC" (AWC) dataset is physically consistent with the definition of WHC in the LSM and has a global average close to 150 mm; the "total WHC" (TWC) dataset is used as a secondary reference for a large WHC increase (more than a doubling from 150 mm). The average impact over land of the increase in WHC (from REF to both AWC and TWC) is an increase in annual mean evaporation, split between increased annual precipitation and decreased annual mean moisture convergence. The regional responses, however, are more complex: precipitation increases in summer over the midlatitude landmasses through the recycling of increased evaporation; in the Tropics, moisture convergence and precipitation decrease in the intertropical convergence zone and precipitation increases in the surrounding areas, both behaviors being related to the sensitivity of tropical convection to surface energy fluxes in the LMD GCM. Two important conclusions arise from these numerical results: first, the changes in the hydrological cycle are driven through evaporation by the WHC changes realized in the hydrologically active regions (continental midlatitude and tropical rainbelts); second, WHC increase of 10% to 20% in the rainbelts induces changes in the hydrologic cycle with similar patterns and almost the same amplitude as changes resulting from an increase greater than 100%. These results are strongly conditioned to the land-atmosphere feedbacks, which can only be allowed in a GCM environment. DE - DESCRIPTORS: Africa-; Angola-; Asia-; atmospheric-precipitation; Borneo-; Brazil-; Central-Africa; Colombia-; Congo-Democratic-Republic; evaporation-; Far-East; general-circulation-models; global-; hydrodynamics-; hydrologic-cycle; hydrology-; land-surface-models; Malay-Archipelago; moisture-; New-Guinea; numerical-models; properties-; sensitivity-analysis; simulation-; soils-; South-America; spatial-distribution; tropical-environment; Venezuela-; water-balance CC - CATEGORY CODES: 21-Hydrogeology DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic IL - ILLUSTRATION: Refs: 58; illus. incl. 5 tables, sketch maps. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. IS - ISSN: 0894-8755 AN - ACCESSION NUMBER: 2001-025247 UD - UPDATE CODE: 200108 Registro 5213 de 5614 - GeoRef 1997-2001 TI - TITLE: The La Luna Formation; chemostratigraphy and organic facies in the Middle Magdalena Basin. AU - AUTHORS: Rangel-A; Parra-P; Nino-C AF - AUTHOR AFFILIATION: ECOPETROL-ICP, Bucaramanga, Colombia BK - BOOK TITLE: In: Advances in organic geochemistry 1999; proceedings of the 19th international meeting on Organic geochemistry. BA - BOOK AUTHORS: Yalcin-M-Namik (editor); Inan-Sedat (editor); Derenne-Sylvie (editor); Farrimond-P (editor); Freeman-Katherine-H (editor); Littke-Ralf (editor); Maxwell-J-R (editor); Requejo-A-G (editor); Wilhelms-A (editor) SO - SOURCE: Organic Geochemistry. 31; 12, Pages 1267-1284. 2000. PB - PUBLISHER: Pergamon. Oxford-New York, International. 2000. CP - COUNTRY OF PUBLICATION: International PY - PUBLICATION YEAR: 2000 CN - CONFERENCE INFORMATION: 19th international meeting on Organic geochemistry. Istanbul, Turkey. Sept. 6-10, 1999. LA - LANGUAGE: English AB - ABSTRACT: A detailed geochemical study and a sequence stratigraphic interpretation have been conducted on a sedimentary sequence of the Upper Cretaceous La Luna Formation, in a section outcropping in the eastern flank of the Middle Magdalena Basin (MMB), Colombia. The goals were to evaluate geochemical variability related to lithofacies and organic facies changes, characterize depositional environment and investigate the possible relationship between geochemical data and sequence stratigraphic cycles. The La Luna Formation is composed of organic-rich sediments of monotonous appearance, with good to excellent potential for oil generation. Most of the bulk, petrographic and biomarker parameters display a relatively narrow range of variation. However, the geochemical variations are sufficient to differentiate organic facies types B, BC and C in the Salada Member, B and D in the Pujamana Member and B in the Galembo Member. Certain biomarker ratios are consistent within the La Luna Formation and are characteristic of its depositional environment, for example, average ratios of diasterane/sterane are lower than 1, Ts/Tm averages are less than 0.33, the C (sub 35) /C (sub 34) hopane ratio is more than 0.92, and oleanane/C (sub 30) hopane ratios range from 0.02 to 0.19. Regarding depositional condition indicators, the C (sub 35) /C (sub 34) hopane ratio shows a good positive correlation with HI. This suggests that in carbonate environment changes in this parameter are more strongly related to redox condition than to changes in carbonate content. Regarding the possible relationship between organic matter characteristics and sea level changes, in regressive carbonate shelves during shallow stages, HI tends to increase and TOC tends to decrease, while in regressive siliciclastic shelves, both TOC and HI decrease continuously. Some biomarker ratios (oleanane/C (sub 30) hopane, C (sub 20) /C (sub 23) tricyclic, Ts/Tm) increase during base level falls. Regarding delta (super 13) C/ (super 12) C isotope composition, the aromatic fraction and whole bitumen display an isotopic shift associated to the main deepening event in the section. DE - DESCRIPTORS: aromatic-hydrocarbons; biomarkers-; bitumens-; C-13-C-12; carbon-; carbonate-ramps; carbonate-rocks; chemostratigraphy-; clastic-rocks; Colombia-; Cretaceous-; cycles-; depositional-environment; fragmentograms-; Galembo-Member; genesis-; geochemistry-; hopanes-; hopanoids-; hydrocarbons-; hydrogen-; isotope-ratios; isotopes-; La-Luna-Formation; La-Sorda-Creek; limestone-; lithofacies-; marine-environment; maturity-; Mesozoic-; Middle-Magdalena-Basin; mudstone-; oleananes-; organic-compounds; outcrops-; oxygen-; paleo-oceanography; petrography-; petroleum-; Pujamana-Member; regression-; Salada-Member; sampling-; saturated-hydrocarbons; sea-level-changes; sedimentary-rocks; sequence-stratigraphy; shale-; shallow-water-environment; shelf-environment; siliciclastics-; source-rocks; South-America; stable-isotopes; steranes-; terpanes-; thin-sections; total-organic-carbon; triterpanes-; Upper-Cretaceous; variations-; wackestone- CC - CATEGORY CODES: 02D-Isotope-geochemistry; 29A-Economic-geology,-geology-of-energy-sources DT - DOCUMENT TYPE: Serial; Conference-Document BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N070000; N074500; LONG: W0730000; W0740000. IL - ILLUSTRATION: Refs: 33; illus. incl. 4 tables, block diags., chart, strat. cols., sketch maps. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands IS - ISSN: 0146-6380 AN - ACCESSION NUMBER: 2001-012561 UD - UPDATE CODE: 200105 Registro 5214 de 5614 - GeoRef 1997-2001 TI - TITLE: Climatic change during the Younger Dryas chron in northern South America; a test of the evidence. AU - AUTHORS: van-t-Veer-Ron; Islebe-Gerald-A; Hooghiemstra-Henry AF - AUTHOR AFFILIATION: University of Amsterdam, Hugo de Vries Laboratory, Amsterdam, Netherlands SO - SOURCE: Quaternary Science Reviews. 19; 17-18, Pages 1821-1835. 2000. 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