No. Registros Solicitud 1 5614 colombia
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CC - CATEGORY CODES: 12-Stratigraphy DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N045400; N045400; LONG: W0730100; W0730100. NN - ANNOTATION: With GSA Data Repository Item 200086. IL - ILLUSTRATION: Refs: 22; illus. incl. 1 table, strat. col. 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: 0091-7613 CO - CODEN: GLGYBA AN - ACCESSION NUMBER: 2000-073551 UD - UPDATE CODE: 200023 Registro 5224 de 5614 - GeoRef 1997-2001 TI - TITLE: Climatic influence in controlling the authigenic mineralogy of volcanolithic sandstones. AU - AUTHORS: Solano-Acosta-W AF - AUTHOR AFFILIATION: Indiana State University, Terre Haute, IN, United States BK - BOOK TITLE: In: 2000 AAPG Eastern Section meeting; abstracts. BA - BOOK AUTHORS: Anonymous SO - SOURCE: AAPG Bulletin. 84; 9, Pages 1393. 2000. PB - PUBLISHER: American Association of Petroleum Geologists. Tulsa, OK, United States. 2000. CP - COUNTRY OF PUBLICATION: United-States PY - PUBLICATION YEAR: 2000 CN - CONFERENCE INFORMATION: 2000 AAPG Eastern Section meeting. London, ON, Canada. Sept. 24-26, 2000. LA - LANGUAGE: English AB - ABSTRACT: The Cretaceous (Aptian?) Yavi Formation in the Upper Magdalena Valley basin consists of continental red beds deposited within a back-arc basin on the eastern margin of the Central Cordillera in the Colombian Andes. A systematic stratigraphic variation in sandstone composition within the sequence reveals a climatic change during deposition, ranging from semiarid to semihumid-humid. In addition, this climatic shift has an effect on the authigenic mineralogy, at least in the type section where the samples for this work were collected. The diagenetic changes recorded in the Yavi Formation can be described by six main episodes of cementation coupled with compaction as seen by the presence of pseudomatrix (or squeezed grains) throughout the sequence. From bottom to top, these six episodes are characterized primarily by: 1) microcrystalline quartz and chalcedony; 2) carbonates; 3) phyllosilicates; 4) phyllosilicates and opal; 5) phyllosilicates and carbonates; and 6) phyllosilicates, microcrystalline quartz and chalcedony. This diagenetic pattern seems to be independent of detrital mineral composition and mostly controlled by climatically influenced pore-water chemistry. The presence of quartz and chalcedony is interpreted to have formed during relative semi-humid conditions whereas the carbonate cement and phyllosilicates formed during more arid conditions. The Yavi Formation is characterized by its compositional immaturity and poor sorting that resulted in low initial porosity. Further reduction of porosity was accomplished by pore filling cement, as described above. The lack of porosity in these sandstones precludes them as hydrocarbon reservoirs in the Upper Magdalena Valley, unlike the more mature quartzose sandstones overlying this sequence. DE - DESCRIPTORS: Andes-; Aptian-; authigenic-minerals; Central-Cordillera; clastic-rocks; Colombia-; Cretaceous-; diagenesis-; Lower-Cretaceous; Magdalena-Valley; Mesozoic-; mineral-composition; paleoclimatology-; red-beds; sandstone-; sedimentary-rocks; sequence-stratigraphy; South-America; Yavi-Formation CC - CATEGORY CODES: 06A-Sedimentary-petrology 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 American Association of Petroleum Geologists, Tulsa, OK, United States IS - ISSN: 0149-1423 CO - CODEN: AABUD2 AN - ACCESSION NUMBER: 2000-072640 UD - UPDATE CODE: 200023 Registro 5225 de 5614 - GeoRef 1997-2001 TI - TITLE: Identification and revision of reservoir compartments in the Yarigui-Cantagallo oil field, middle Magdalena Valley, Colombia; integration of geochemical, geological, and engineering data. AU - AUTHORS: Talukdar-Suhas-C; Luna-Octavio; Ardila-Jimmy; Blake-Robert AF - AUTHOR AFFILIATION: Core Laboratories, Houston, TX, United States BK - BOOK TITLE: In: AAPG international conference and exhibition; abstracts. BA - BOOK AUTHORS: Anonymous SO - SOURCE: AAPG Bulletin. 84; 9, Pages 1503. 2000. PB - PUBLISHER: American Association of Petroleum Geologists. Tulsa, OK, United States. 2000. CP - COUNTRY OF PUBLICATION: United-States PY - PUBLICATION YEAR: 2000 CN - CONFERENCE INFORMATION: AAPG international conference and exhibition. Bali, Indonesia. Oct. 15 - 18, 2000. LA - LANGUAGE: English AB - ABSTRACT: In this study oil gas chromatography (GC) data is integrated with geologic and engineering information to define the reservoir compartments in the Yarigui-Cantagallo field. The trap (area 55 km2) is a southeast dipping, wedge shaped monocline bounded to the west by the northeast trending Cantagallo Fault. It is further dissected by secondary, longitudinal and transverse faults. The field produces heavy oils. The main producing horizons are the "Cantagallo" sands (alluvial and stacked braided channels) of the Eocene La Paz Formation. The overlying "C" sands (braided channels) of the La Paz Formation and the "B" sands (meandering channels) of the Oligocene Mugrosa Formation are secondary producers. Comparison of GC fingerprints of oils produced from the "Cantagallo" sands in twenty four wells indicate lateral fluid continuity among the "Cantagallo" sands within and across the different fault blocks. GC data of oils from the "C" sands in six wells show they belong to isolated reservoirs. GC data from the commingled oils (ten from "Cantagallo" and "C", one from "C" and "B") have identified their real contributing zones. The oils were derived from the Cretaceous La Luna Formation and show similar thermal maturity. Differences in oil alteration in different reservoir compartments were responsible for their distinct oil fingerprints. Integration of the GC data with information on structure, reservoir distribution, oil-water contacts, initial pressure and pressure history, has led to modification of the structural interpretation, and has helped identify the reservoir compartments consistent with all data. DE - DESCRIPTORS: Colombia-; gas-chromatograms; geochemical-methods; heavy-oil; Magdalena-Valley; oil-and-gas-fields; petroleum-; petroleum-engineering; petroleum-exploration; reservoir-properties; reservoir-rocks; site-exploration; South-America; thermal-maturity; well-logging; Yarigui-Catagallo-Field CC - CATEGORY CODES: 29A-Economic-geology,-geology-of-energy-sources; 30-Engineering-geology 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 American Association of Petroleum Geologists, Tulsa, OK, United States IS - ISSN: 0149-1423 CO - CODEN: AABUD2 AN - ACCESSION NUMBER: 2000-072526 UD - UPDATE CODE: 200023 Registro 5226 de 5614 - GeoRef 1997-2001 TI - TITLE: Fold-evolution matrices and axial-surface analysis of fault-bend folds; application to the Medina Anticline, Eastern Cordillera, Colombia. AU - AUTHORS: Rowan-Mark-G; Linares-Roberto AF - AUTHOR AFFILIATION: Rowan Structural Consulting, Boulder, CO, United States SO - SOURCE: AAPG Bulletin. 84; 6, Pages 741-764. 2000. PB - PUBLISHER: American Association of Petroleum Geologists. Tulsa, OK, United States. 2000. CP - COUNTRY OF PUBLICATION: United-States PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: English AB - ABSTRACT: The Medina anticline is a fault-bend fold located in the hanging wall of the Aguaclara fault along the southeastern thrust front of the Eastern Cordillera of Colombia, a petroleum province with giant fields. We employ a modified technique of axial-surface analysis using fold-evolution matrices, which helps define the subsurface geometry and thereby provides important constraints on trap geometry, modeling of hydrocarbon migration pathways, and prediction of reservoir quality. Fold-evolution matrices illustrate the effects of two independent variables on cross-sectional fold geometry. Three matrices are presented for fault-bend folds in which the fault shape is controlled by a preexisting rift-basin architecture. In each case, variation in displacement is plotted against change in fault geometry: increasing ramp height, decreasing ramp dip, and increasing length of an intermediate flat. The matrices are used to construct synthetic axial-trace maps and corresponding block diagrams in which one or both parameters vary along strike. The synthetic maps can be compared to axial-trace maps of real folds and used in conjunction with other data and methods to provide a better understanding of fold geometry and genesis. Axial-surface analysis of the Medina anticline shows that the three-dimensional fold geometry is compatible with a model in which three parameters vary along strike: (1) increasing fault displacement to the northeast, (2) increasing length of an intermediate flat to the northeast, and (3) decreasing ramp dip to the southwest. The model is used to construct the three-dimensional fault geometry, which is characterized by a ramp-flat-ramp segment to the northeast and an oblique ramp to the southwest. The Medina anticline formed during Tertiary inversion of a Jurassic rift basin, where preexisting normal faults controlled the position and orientation of ramps in the Aguaclara fault. DE - DESCRIPTORS: Aguaclara-Fault; Andean-Orogeny; Andes-; applications-; Barco-Formation; Carbonera-Group; Cenozoic-; Colombia-; controls-; Cretaceous-; deformation-; displacements-; Eastern-Cordillera; Eocene-; faults-; folds-; geometry-; geophysical-profiles; geophysical-surveys; hanging-wall; La-Luna-Formation; lithofacies-; Medina-Anticline; Mesozoic-; migration-; Mirador-Formation; normal-faults; orientation-; Paleogene-; petroleum-; petroleum-accumulation; petroleum-engineering; petroleum-exploration; reservoir-properties; seismic-profiles; South-America; strike-; structural-traps; surveys-; Tertiary-; thickness-; three-dimensional-models; thrust-faults; traps-; Upper-Cretaceous; Villeta-Formation CC - CATEGORY CODES: 29A-Economic-geology,-geology-of-energy-sources; 16-Structural-geology; 20-Applied-geophysics DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic IL - ILLUSTRATION: Refs: 31; illus. incl. block diags., chart, sects., sketch maps. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data supplied by American Association of Petroleum Geologists, Tulsa, OK, United States IS - ISSN: 0149-1423 CO - CODEN: AABUD2 AN - ACCESSION NUMBER: 2000-071967 UD - UPDATE CODE: 200023 Registro 5227 de 5614 - GeoRef 1997-2001 TI - TITLE: Mt. Galeras; activities and lessons to be learned. AU - AUTHORS: Calvache-Velasco-Marta-Lucia AF - AUTHOR AFFILIATION: INGEOMINAS, Observatorio Vulcanologico y Sismologico, Pasto, Colombia BK - BOOK TITLE: In: The causes and consequences of eruptions of andesite volcanoes; papers of a discussion meeting. BA - BOOK AUTHORS: Francis-Peter (editor); Neuberg-Juergen (editor); Sparks-R-Stephen-J (editor) SO - SOURCE: Philosophical Transactions - Royal Society. Mathematical, Physical and Engineering Sciences. 358; 1770, Pages 1607-1617. 2000. PB - PUBLISHER: Royal Society of London. London, United Kingdom. 2000. CP - COUNTRY OF PUBLICATION: United-Kingdom PY - PUBLICATION YEAR: 2000 CN - CONFERENCE INFORMATION: Discussion meeting on The causes and consequences of eruptions of andesite volcanoes. GBR, United Kingdom, Oct. 6-7, 1999. LA - LANGUAGE: English AB - ABSTRACT: Galeras, a volcano in the south of Colombia, has historically been very active. Nevertheless, the memory of the tragic eruption of Nevado del Ruiz in 1985 caused great anxiety in the surrounding region as the first signs of reawakening were perceived in early 1989. Decision makers were unprepared as they tried to organize their communities. The media were obsessed with another potential tragedy, the community scared and disoriented. Banks, businesses and traders--seriously affected by the uncertainties of the situation--forced the regional and local authorities to ignore the volcano activity. The relationship between scientists, the authorities and the community suffered from inappropriate management of the situation. Seismic swarms that could be felt and eruptions that were observed in 1993 helped to focus the minds of all involved. Recently, the relative quietness of the volcano has allowed scientists, the authorities and the community to achieve remarkable results. Awareness of the hazards is now growing among the community. Policies need to be implemented while the volcano is dormant. DE - DESCRIPTORS: Andes-; Colombia-; earthquakes-; eruptions-; Galeras-; geologic-hazards; human-ecology; prediction-; risk-assessment; seismicity-; shield-volcanoes; South-America; southern-Colombia; volcanic-earthquakes; volcanoes- CC - CATEGORY CODES: 24-Quaternary-geology DT - DOCUMENT TYPE: Serial; Conference-Document BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N011000; N011500; LONG: W0772000; W0772500. IL - ILLUSTRATION: Refs: 17; illus. incl. sketch map. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. IS - ISSN: 1364-503X AN - ACCESSION NUMBER: 2000-069379 UD - UPDATE CODE: 200022 Registro 5228 de 5614 - GeoRef 1997-2001 TI - TITLE: Magdalena River; interannual variability (1975-1995) and revised water discharge and sediment load estimates. AU - AUTHORS: Restrepo-J-D; Kjerfve-B AF - AUTHOR AFFILIATION: University of South Carolina, Marine Science Program, Columbia, SC, United States SO - SOURCE: Journal of Hydrology. 235; 1-2, Pages 137-149. 2000. PB - PUBLISHER: Elsevier. Amsterdam, Netherlands. 2000. CP - COUNTRY OF PUBLICATION: Netherlands PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: English AB - ABSTRACT: Magdalena river discharges 228 km (super 3) of water annually, or on the average 7200 m (super 3) s (super -1) , into the western Caribbean based on 21years of daily data, 1975-1995. The mean sediment load for the Magdalena is 144X10 (super 6) t yr (super -1) , corresponding to a sediment yield of 560 t km (super -2) yr (super -1) for the 257,438 km (super 2) basin. Magdalena is the largest river discharging directly into the Caribbean Sea, and it has the highest sediment yield of any medium-sized or large river along the entire east coast of South America. Magdalena sediment load is well correlated with water discharge (R (super 2) = 0.76). Regression of water discharge on the Southern Oscillation Index (SOI) shows that 69% of the variability of the Magdalena streamflow is explained by the SOI, with high discharge occurring during La Nina phase and low discharge during El Nino phase. Cross-spectral analysis between Magdalena discharge and the SOI indicates an average recurrence interval of 3.0 years with a coherence, Y (super 2) = 0.90, and that the discharge anomaly is in phase with the SOI anomaly. Analysis of time series of sediment load, 1975-1995, indicates that la Nina phase is characterized by a sediment load as high as 1600X10 (super 3) t day (super -1) . Sediment load is also correlated with SOI with a coefficient of variation of R (super 2) = 0.54. Clearly, the Magdalena water discharge and sediment load are strongly coupled to the El Nino-La Nina cycle. DE - DESCRIPTORS: Andes-; annual-variations; bedload-; climate-effects; Colombia-; cycles-; discharge-; drainage-basins; El-Nino; fluvial-environment; hydrology-; La-Nina; Magdalena-River; Northern-Andes; recurrence-interval; regression-analysis; rivers-and-streams; sediment-yield; sediments-; South-America; Southern-Oscillation; statistical-analysis; stream-sediments; time-series-analysis CC - CATEGORY CODES: 21-Hydrogeology DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic IL - ILLUSTRATION: Refs: 74; illus. incl. 1 table, sketch map. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands IS - ISSN: 0022-1694 CO - CODEN: JHYDA7 AN - ACCESSION NUMBER: 2000-068859 UD - UPDATE CODE: 200022 Registro 5229 de 5614 - GeoRef 1997-2001 TI - TITLE: Un nuevo Mylodontinae (Xenarthra, Tardigrada) en la fauna de La Venta, Mioceno de Colombia; el estado actual de la familia Orophodontidae Translated Title: A new Mylodontinae (Xenarthra, Tardigrada) from the Miocene, La Venta of Colombia; the current state of the family Orophodontidae. AU - AUTHORS: Villarroel-A-Carlos AF - AUTHOR AFFILIATION: Universidad Nacional de Colombia, Departamento de Geosciencias, Bogota, Colombia SO - SOURCE: Revista de la Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. 24; 90, Pages 117-127. 2000. PB - PUBLISHER: Academia Colombiana de Ciencias Exactas, Fisicas y Naturales. Bogota, Colombia. 2000. CP - COUNTRY OF PUBLICATION: Colombia PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: Spanish LS - LANGUAGE OF SUMMARY: English AB - ABSTRACT: The study of a cranium and its pertinent jaw-bone collected in sediments of the Honda Group, Upper Miocene of La Venta (Huila, Colombia) permits the proposal of Brievabradys laventensis gen. et sp. nov. To this species is attributed the specimen that Hirschfeld (1985) had described as "Small Nothrothere" and the material described by McDonald (1997) as an Argentine species, Glossotheriopsis pascuali. On the other hand, the comparison of B. laventensis with Orophodon hapaloides, as well as the evaluation of the diagnostic aspects of the family Orophodontidae allow assignment of Or. hapaloides to the subfamily Mylodontinae (Mylodontidae). DE - DESCRIPTORS: Cenozoic-; Chordata-; Colombia-; description-; Edentata-; Eutheria-; holotypes-; Mammalia-; Miocene-; Mylodontinae-; Neogene-; Orophodontidae-; South-America; Tardigrada-; taxonomy-; teeth-; Tertiary-; Tetrapoda-; Theria-; Vertebrata-; Xenarthra- CC - CATEGORY CODES: 11-Vertebrate-paleontology DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic IL - ILLUSTRATION: Refs: 27; illus. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. IS - ISSN: 0370-3908 CO - CODEN: RCCFAO AN - ACCESSION NUMBER: 2000-068644 UD - UPDATE CODE: 200022 Registro 5230 de 5614 - GeoRef 1997-2001 TI - TITLE: Devonian plants from Colombia, with discussion of their geological and palaeogeographical context. AU - AUTHORS: Berry-Christopher-M; Morel-Eduardo; Mojica-Jairo; Villarroel-Carlos AF - AUTHOR AFFILIATION: University of Wales Cardiff, Department of Earth Sciences, Cardiff, United Kingdom SO - SOURCE: Geological Magazine. 137; 3, Pages 257-268. 2000. PB - PUBLISHER: Cambridge University Press. London, United Kingdom. 2000. CP - COUNTRY OF PUBLICATION: United-Kingdom PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: English DE - DESCRIPTORS: Andes-; Archaeopteris-; autochthons-; biogeography-; Colombia-; Colpodexylon-; Cuche-Formation; Devonian-; East-Andean-Terrane; Eastern-Cordillera; Filicopsida-; Floresta-Massif; Guyana-Shield; Magdalena-Valley; morphology-; paleogeography-; Paleozoic-; Plantae-; Pteridophyta-; South-America; Venezuela- CC - CATEGORY CODES: 09-Paleobotany DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Analytic MC - MAP COORDINATES: LAT: N040000; N120000; LONG: W0740000; W0780000. IL - ILLUSTRATION: Refs: 65; illus. incl. 1 table, geol. sketch map. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. IS - ISSN: 0016-7568 CO - CODEN: GEMGA4 AN - ACCESSION NUMBER: 2000-066112 UD - UPDATE CODE: 200021 Registro 5231 de 5614 - GeoRef 1997-2001 BK - BOOK TITLE: Proceedings of the Ocean Drilling Program, scientific results, Caribbean Ocean history and the Cretaceous/ Tertiary boundary event; covering Leg 165 of the cruises of the drilling vessel JOIDES Resolution, Miami, Florida, to San Juan Puerto Rico, sites 998-1002, 19 December 1995-17 February 1996. BA - BOOK AUTHORS: Leckie-R-Mark; Sigurdsson-Haraldur; Acton-Gary-D; Abrams-Lewis-J; Bralower-Timothy-J; Carey-Steven-N; Chaisson-William-P; Cotillon-Pierre; Cunningham-Andrew-D; D-Hondt-Steven-L; Droxler-Andre-W; Galbrun-Bruno; Gonzalez-Juan; Haug-Gerald-H; Kameo-Koji; King-John-W; Lind-Ida-L; Louvel-Veronique; Lyons-Timothy-W; Murray-Richard-W; Mutti-Maria; Myers-Greg; Pearce-Richard-B; Pearson-D-Graham; Peterson-Larry-C; Roehl-Ursula; Garman-Phyllis-M (editor) BF - BOOK AUTHOR AFFILIATION: University of Massachusetts, Department of Geosciences, Amherst, MA, United States; University of Rhode Island, United States; Ocean Drilling Program, United States; University of Puerto Rico, Puerto Rico; University of North Carolina at Chapel Hill, United States; Paleontological Research Institution, United States; Universite de Lyon I, France; Rice University, United States; Universite Pierre et Marie Curie, France; INGEOMINAS, Colombia; GEOMAR, Federal Republic of Germany; Teikoku Oil Company, Japan; Danmarks Tekniske Universitet, Denmark; Institut Mediterraneen de Technologie, France; University of Missouri, United States; Boston University, United States; Swiss Federal Institute of Technology, Switzerland; Lamont-Doherty Earth Observatory, United States; University of Southampton, United Kingdom; Durham University, United Kingdom; Rosenstiel School of Marine and Atmospheric Science, United States; Bremen University, Federal Republic of Germany SO - SOURCE: Proceedings of the Ocean Drilling Program, Scientific Results. 165; 2000. NT - NOTES: CD-ROM format, ISSN 1096-2514; WWW format, ISSN 1096-7451; all chapters are also available on the included CD-ROM and on the Web in PDF format PB - PUBLISHER: Texas A & M University, Ocean Drilling Program. College Station, TX, United States. Pages: 335. 2000. RP - RESEARCH PROGRAM: ODP (Ocean Drilling Program) CP - COUNTRY OF PUBLICATION: United-States PY - PUBLICATION YEAR: 2000 LA - LANGUAGE: English DE - DESCRIPTORS: Atlantic-Ocean; biostratigraphy-; Caribbean-Sea; Cenozoic-; Cretaceous-; depositional-environment; geophysical-methods; K-T-boundary; Leg-165; lower-Paleocene; Mesozoic-; North-Atlantic; Ocean-Drilling-Program; ODP-Site-1000; ODP-Site-1001; ODP-Site-1002; ODP-Site-998; ODP-Site-999; paleo-oceanography; Paleocene-; Paleogene-; paleomagnetism-; stratigraphic-boundary; tectonics-; Tertiary-; Upper-Cretaceous; volcanism- CC - CATEGORY CODES: 12-Stratigraphy; 07-Oceanography DT - DOCUMENT TYPE: Serial BL - BIB LEVEL: Monograph NN - ANNOTATION: Individual chapters are cited separately. IL - ILLUSTRATION: illus. RF - REFERENCE SOURCE: GeoRef, Copyright 2002, American Geological Institute. IS - ISSN: 0884-5891 UR - URL: (Full text) http://www-odp.tamu.edu/publications/165_SR/165TOC.HTM AN - ACCESSION NUMBER: 2000-062878 UD - UPDATE CODE: 200020 XURL - URLs, etc : URL; URL-ITEM (UR) Registro 5232 de 5614 - GeoRef 1997-2001 TI - TITLE: When a volcano turns deadly for those studying its moods. Yüklə 20,82 Mb. Dostları ilə paylaş:
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