TI - TITLE: Late Cretaceous upwelling and anoxic sedimentation in northwestern South America.
AU - AUTHORS: Macellari-Carlos-E; de-Vries-Thomas-John
AF - AUTHOR AFFILIATION: Univ. S.C., Earth Sci. and Resour. Inst., Columbia, SC, United States
SO - SOURCE: Palaeogeography, Palaeoclimatology, Palaeoecology. 59; 4, Pages 279-292. 1987.
PB - PUBLISHER: Elsevier. Amsterdam, Netherlands. 1987.
CP - COUNTRY OF PUBLICATION: Netherlands
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
DE - DESCRIPTORS: anaerobic-environment; Colombia-; Cretaceous-; environment-; Galembo-Member; Magdalena-Valley; Maracaibo-Basin; Mesozoic-; paleogeography-; sedimentary-petrology; sedimentation-; South-America; stratigraphy-; Venezuela-
CC - CATEGORY CODES: 06A-Sedimentary-petrology
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 60; illus. incl. block diag., strat. cols., geol. sketch maps.
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0031-0182
CO - CODEN: PPPYAB
AN - ACCESSION NUMBER: 1987-083090
UD - UPDATE CODE: 1987
Registro 4136 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Helium-3 emission from Nevado del Ruiz Volcano, Colombia.
AU - AUTHORS: Williams-Stanley-N; Sano-Yuji; Wakita-Hiroshi
AF - AUTHOR AFFILIATION: La. State Univ., Dep. Geol. and Geophys., Baton Rouge, LA, United States
SO - SOURCE: Geophysical Research Letters. 14; 10, Pages 1035-1038. 1987.
PB - PUBLISHER: American Geophysical Union. Washington, DC, United States. 1987.
CP - COUNTRY OF PUBLICATION: United-States
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
DE - DESCRIPTORS: atmosphere-; Colombia-; degassing-; gases-; geochemistry-; geologic-hazards; He-3; He-4-He-3; helium-; hot-springs; isotopes-; lahars-; magmas-; mantle-; mass-movements; Nevado-del-Ruiz; noble-gases; South-America; springs-; stable-isotopes; thermal-waters; time-factor; volcanoes-; volcanology-; west-central-Colombia
CC - CATEGORY CODES: 02D-Isotope-geochemistry; 05A-Igneous-and-metamorphic-petrology; 30-Engineering-geology
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 15; illus. incl. 1 table, sketch map.
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0094-8276
CO - CODEN: GPRLAJ
AN - ACCESSION NUMBER: 1988-003946
UD - UPDATE CODE: 1988
Registro 4137 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Geological history of the Cretaceous ophiolitic complexes of northwestern South America (Colombian Andes).
AU - AUTHORS: Bourgois-Jacques; Toussaint-Jean-Francois; Gonzalez-Humberto; Azema-Jacques; Calle-Bernardo; Desmet-Alain; Murcia-Luis-A; Acevedo-Alvaro-P; Parra-Eduardo; Tournon-Jean
AF - AUTHOR AFFILIATION: Univ. Pierre et Marie Curie, Dep. Geotectonique, Paris, France
SO - SOURCE: Tectonophysics. 143; 4, Pages 307-327. 1987.
PB - PUBLISHER: Elsevier. Amsterdam, Netherlands. 1987.
CP - COUNTRY OF PUBLICATION: Netherlands
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
DE - DESCRIPTORS: Andes-; basins-; Cenozoic-; Colombia-; Cretaceous-; displacements-; faults-; folds-; igneous-rocks; marginal-basins; Mesozoic-; metamorphism-; nappes-; Northern-Andes; obduction-; ophiolite-; Paleogene-; plate-convergence; plate-tectonics; plutonic-rocks; South-America; tectonophysics-; Tertiary-; thrust-faults; ultramafics-; Western-Cordillera
CC - CATEGORY CODES: 18-Solid-earth-geophysics; 05A-Igneous-and-metamorphic-petrology; 16-Structural-geology
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0040-1951
CO - CODEN: TCTOAM
AN - ACCESSION NUMBER: 1988-004215
UD - UPDATE CODE: 1988
Registro 4138 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: A correction for the effect of comminution on the cation exchange capacity of clay-poor sandstones.
AU - AUTHORS: Huff-G-F
AF - AUTHOR AFFILIATION: Cit. Serv., Oil and Gas Corp., USA, United States
SO - SOURCE: SPE Formation Evaluation. 2; 3, Pages 338-344. 1987.
PB - PUBLISHER: Society of Petroleum Engineers (SPE). Richardson, TX, United States. 1987.
CP - COUNTRY OF PUBLICATION: United-States
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
DE - DESCRIPTORS: Cano-Limon-Well-3; cation-exchange-capacity; clastic-rocks; Colombia-; geochemistry-; La-Yuca-Well-6; Llanos-; properties-; sandstone-; sedimentary-rocks; South-America; X-ray-diffraction-analysis
CC - CATEGORY CODES: 02C-Geochemistry-of-rocks,-soils,-and-sediments
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 17; illus. incl. 5 tables.
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0885-923X
AN - ACCESSION NUMBER: 1988-005140
UD - UPDATE CODE: 1988
Registro 4139 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Morphology of the Wadati-Benioff zone and volcanism in Ecuador and northern Peru.
AU - AUTHORS: Hanus-V; Vanek-J
AF - AUTHOR AFFILIATION: Czech. Acad. Sci., Inst. Geol. and Geotech., Prague, Czechoslovakia
SO - SOURCE: Geofisica Internacional. 26; 4, Pages 499-524. 1987.
PB - PUBLISHER: Union Geofisica Mexicana. Mexico, D.F., Mexico. 1987.
CP - COUNTRY OF PUBLICATION: Mexico
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
LS - LANGUAGE OF SUMMARY: Spanish
DE - DESCRIPTORS: Andes-; Cenozoic-; Colombia-; distribution-; earthquakes-; Ecuador-; epicenters-; Nazca-Plate; Neogene-; northern-Peru; Peru-; petrology-; Pleistocene-; Pliocene-; Quaternary-; seismology-; South-America; Tertiary-; volcanism-; volcanoes-; volcanology-; Wadati-Benioff-zone
CC - CATEGORY CODES: 18-Solid-earth-geophysics
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 38; illus. incl. 1 table.
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0016-7169
CO - CODEN: GFINAC
AN - ACCESSION NUMBER: 1988-006987
UD - UPDATE CODE: 1988
Registro 4140 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Geometrical control of subduction-related magmatism; the Mesozoic and Cenozoic plutonic history of western Colombia.
AU - AUTHORS: Aspden-J-A; McCourt-W-J; Brook-M
AF - AUTHOR AFFILIATION: Br. Geol. Surv., Keyworth, United Kingdom
SO - SOURCE: Journal of the Geological Society of London. 144; 6, Pages 893-905. 1987.
PB - PUBLISHER: Geological Society of London. London, United Kingdom. 1987.
CP - COUNTRY OF PUBLICATION: United-Kingdom
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
DE - DESCRIPTORS: batholiths-; Cenozoic-; Colombia-; geometry-; intrusions-; Jurassic-; magmas-; Mesozoic-; plate-tectonics; plutons-; South-America; subduction-; tectonophysics-; Tertiary-; Triassic-; western-Colombia
CC - CATEGORY CODES: 18-Solid-earth-geophysics; 05A-Igneous-and-metamorphic-petrology
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 90; illus. incl. 1 table, geol. sketch maps.
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0016-7649
CO - CODEN: JGSLAS
AN - ACCESSION NUMBER: 1988-007524
UD - UPDATE CODE: 1988
Registro 4141 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Satellite radars for geologic mapping in tropical regions.
AU - AUTHORS: Ford-J-P; Sabins-F-F
AF - AUTHOR AFFILIATION: Calif. Inst. Technol., Jet Propul. Lab., Pasadena, CA, United States
BK - BOOK TITLE: In: Proceedings of the Fifth thematic conference on remote sensing for exploration geology; mineral and energy exploration; technology for a competitive world; Volume 1.
BA - BOOK AUTHORS: Cook-Jerald-J (chairperson); Rogers-Robert-H (chairperson)
SO - SOURCE: Pages 307-316. 1987.
PB - PUBLISHER: Environ. Res. Inst. Mich.. Ann Arbor, MI, United States. 1987.
CP - COUNTRY OF PUBLICATION: United-States
PY - PUBLICATION YEAR: 1987
CN - CONFERENCE INFORMATION: Fifth thematic conference on remote sensing for exploration geology; mineral and energy exploration; technology for a competitive world. Reno, NV, United States. Sept. 29-Oct. 2, 1986.
LA - LANGUAGE: English
DE - DESCRIPTORS: Amazon-Basin; Asia-; Borneo-; Brazil-; cartography-; Colombia-; East-Malaysia; Far-East; faults-; folds-; geophysical-surveys; imagery-; Indonesia-; Kahakam-River; Kalimantan-Indonesia; lineaments-; Malay-Archipelago; Malaysia-; Peru-; radar-methods; Rajang-Block; Ratah-River-valley; remote-sensing; Sarawak-Malaysia; South-America; structural-geology; surveys-; tectonics-; terrains-; tropical-environment
CC - CATEGORY CODES: 16-Structural-geology; 20-Applied-geophysics
DT - DOCUMENT TYPE: Book; Conference-Document
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 15; geol. sketch maps.
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
AN - ACCESSION NUMBER: 1988-008597
UD - UPDATE CODE: 1988
Registro 4142 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Cross-channel mixing and its effect on sedimentation in the Orinoco River.
AU - AUTHORS: Stallard-R-F
AF - AUTHOR AFFILIATION: Princeton Univ., Dep. Geol. and Geophys. Sci., Princeton, NJ, United States
SO - SOURCE: Water Resources Research. 23; 10, Pages 1977-1986. 1987.
PB - PUBLISHER: American Geophysical Union. Washington, DC, United States. 1987.
CP - COUNTRY OF PUBLICATION: United-States
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
AB - ABSTRACT: At high discharge, cross-channel mixing of water in the Orinoco River main stem requires several days and up to 500 km of downriver transit for completion. During mixing, substantial amounts of <0.063 mm sediment are lost from suspension. The water closest to the left bank appears to lose the most, probably by deposition onto the floodplain. This occurs in two ways. First, sediment-laden left-bank tributaries draining the Andes, such as the Apure, deposit sediment in distributary systems following impoundment by the Orinoco backwater. Second, when sediment-laden waters from the Andes actually join the Orinoco, the slow nature of cross-channel mixing causes the water and sediment to be confined more to the left side of the channel. Significant sediment loss or storage probably occurs only near flood stage.--Modified journal abstract.
DE - DESCRIPTORS: Andes-; channels-; Colombia-; drainage-basins; engineering-geology; hydraulics-; hydrogeology-; hydrology-; mixing-; Orinoco-River; rivers-and-streams; sedimentation-; South-America; stream-transport; surveys-; suspended-materials; transport-; Venezuela-; waterways-
CC - CATEGORY CODES: 21-Hydrogeology; 30-Engineering-geology
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 20; illus. incl. 5 tables, sketch map.
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0043-1397
CO - CODEN: WRERAQ
AN - ACCESSION NUMBER: 1988-008780
UD - UPDATE CODE: 1988
Registro 4143 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Nevado del Ruiz Volcano, Colombia; the November 1985 eruption and related events.
AU - AUTHORS: Williams-Stanley-N
AF - AUTHOR AFFILIATION: La. State Univ., Dep. Geol. and Geophys., Baton Rouge, LA, United States
SO - SOURCE: Journal of Volcanology and Geothermal Research. 33; 4, Pages 355-360. 1987.
PB - PUBLISHER: Elsevier. Amsterdam, Netherlands. 1987.
CP - COUNTRY OF PUBLICATION: Netherlands
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
DE - DESCRIPTORS: Armero-; catastrophes-; Chinchina-; Colombia-; eruptions-; geologic-hazards; Nevado-del-Ruiz; South-America; volcanoes-; volcanology-; west-central-Colombia
CC - CATEGORY CODES: 24-Quaternary-geology
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 20
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0377-0273
CO - CODEN: JVGRDQ
AN - ACCESSION NUMBER: 1988-009082
UD - UPDATE CODE: 1988
Registro 4144 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Long-term reactions of phosphate rocks with an Oxisol in Colombia.
AU - AUTHORS: Chien-S-H; Hammond-L-L; Leon-L-A
AF - AUTHOR AFFILIATION: Int. Fertil. Dev. Cent., Agro-Econ. Div., Muscle Shoals, AL, United States
SO - SOURCE: Soil Science. 144; 4, Pages 257-265. 1987.
PB - PUBLISHER: Williams & Wilkins Company. Baltimore, MD, United States. 1987.
CP - COUNTRY OF PUBLICATION: United-States
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
DE - DESCRIPTORS: chemical-analysis; chemically-precipitated-rocks; classification-; Colombia-; fertilizers-; geochemistry-; Oxisols-; pH-; phosphate-rocks; phosphorus-; properties-; sedimentary-rocks; soil-surveys; soils-; sorption-; South-America; surveys-
CC - CATEGORY CODES: 25-Soils
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 19; illus. incl. 7 tables.
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0038-075X
CO - CODEN: SOSCAK
AN - ACCESSION NUMBER: 1988-010115
UD - UPDATE CODE: 1988
Registro 4145 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Cenozoic magmatism in the Colombian Andes.
AU - AUTHORS: Restrepo-J-J; Toussaint-J-F
AF - AUTHOR AFFILIATION: Univ. Nac. Colomb., COL, Colombia
BK - BOOK TITLE: In: Actas del Decimo congreso geologico argentino.
BA - BOOK AUTHORS: Acenolaza-Florencio-G (chairperson)
SO - SOURCE: Actas del Congreso Geologico Argentino. 10, Vol. 4; Pages 140-141. 1987.
NT - NOTES: Granitos fanerzoicos circum-pacificos--Circum Pacific Phanerozoic granites
PB - PUBLISHER: Asociacion Geologica Argentina. Buenos Aires, Argentina. 1987.
CP - COUNTRY OF PUBLICATION: Argentina
PY - PUBLICATION YEAR: 1987
CN - CONFERENCE INFORMATION: Decimo congreso geologico argentino. San Miguel de Tucuman, Argentina. Sept. 14-18, 1987.
LA - LANGUAGE: English
DE - DESCRIPTORS: alkaline-earth-metals; Andes-; Cenozoic-; Colombia-; Cordillera-; geochronology-; isotopes-; metals-; Miocene-; Neogene-; paleomagnetism-; patterns-; ratios-; South-America; Sr-87-Sr-86; stable-isotopes; strontium-; surveys-; Tertiary-; Western-Cordillera
CC - CATEGORY CODES: 03-Geochronology
DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document
BL - BIB LEVEL: Analytic
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0325-2620
CO - CODEN: AJOGBI
AN - ACCESSION NUMBER: 1988-011842
UD - UPDATE CODE: 1988
Registro 4146 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Late Cretaceous plutonism in the central cordillera of Colombia.
AU - AUTHORS: Gonzalez-H; Restrepo-J-J; Montoya-T; Preciado-L-M; Rodriguez-G; Sanchez-F; Vasquez-H
AF - AUTHOR AFFILIATION: Ingeominas, Medellin, Colombia
BK - BOOK TITLE: In: Actas del Decimo congreso geologico argentino.
BA - BOOK AUTHORS: Acenolaza-Florencio-G (chairperson)
SO - SOURCE: Actas del Congreso Geologico Argentino. 10, Vol. 4; Pages 160. 1987.
NT - NOTES: Granitos fanerzoicos circum-pacificos--Circum Pacific Phanerozoic granites
PB - PUBLISHER: Asociacion Geologica Argentina. Buenos Aires, Argentina. 1987.
CP - COUNTRY OF PUBLICATION: Argentina
PY - PUBLICATION YEAR: 1987
CN - CONFERENCE INFORMATION: Decimo congreso geologico argentino. San Miguel de Tucuman, Argentina. Sept. 14-18, 1987.
LA - LANGUAGE: English
DE - DESCRIPTORS: Altavista-Stock; Anteoquian-Batholith; Central-Cordillera; Colombia-; Cretaceous-; distribution-; intrusions-; Mesozoic-; petrology-; South-America; stocks-; Upper-Cretaceous
CC - CATEGORY CODES: 05A-Igneous-and-metamorphic-petrology
DT - DOCUMENT TYPE: Abstract; Serial; Conference-Document
BL - BIB LEVEL: Analytic
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0325-2620
CO - CODEN: AJOGBI
AN - ACCESSION NUMBER: 1988-011848
UD - UPDATE CODE: 1988
Registro 4147 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Evolucion y marco tectonico del vulcanismo Meso-Cenozoico de Colombia
Translated Title: Evolution and tectonics of the Mesozoic-Cenozoic volcanism of Colombia.
AU - AUTHORS: Leal-A-Murcia
AF - AUTHOR AFFILIATION: INGEOMINAS, Ibague, Colombia
BK - BOOK TITLE: In: Actas del Decimo congreso geologico argentino.
BA - BOOK AUTHORS: Acenolaza-Florencio-G (chairperson)
SO - SOURCE: Actas del Congreso Geologico Argentino. 10, Vol. 4; Pages 319-320. 1987.
NT - NOTES: Vulcanismo andino--Andean volcanism
PB - PUBLISHER: Asociacion Geologica Argentina. Buenos Aires, Argentina. 1987.
CP - COUNTRY OF PUBLICATION: Argentina
PY - PUBLICATION YEAR: 1987
CN - CONFERENCE INFORMATION: Decimo congreso geologico argentino. San Miguel de Tucuman, Argentina. Sept. 14-18, 1987.
LA - LANGUAGE: Spanish
DE - DESCRIPTORS: Cenozoic-; Colombia-; Ecuador-; evolution-; Mesozoic-; South-America; structural-geology; tectonics-; Venezuela-; volcanology-
CC - CATEGORY CODES: 16-Structural-geology
DT - DOCUMENT TYPE: Serial; Conference-Document
BL - BIB LEVEL: Analytic
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0325-2620
CO - CODEN: AJOGBI
AN - ACCESSION NUMBER: 1988-011897
UD - UPDATE CODE: 1988
Registro 4148 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Petrogenetic interpretations of mineral chemistry and geochemistry from the Nevado del Ruiz Volcano, Central Cordillera, Colombia.
AU - AUTHORS: Vatin-Perignon-N; Goemans-P; Oliver-R-A; Briqueu-L
AF - AUTHOR AFFILIATION: Univ. Sci., Cedex, France
BK - BOOK TITLE: In: Actas del Decimo congreso geologico argentino.
BA - BOOK AUTHORS: Acenolaza-Florencio-G (chairperson)
SO - SOURCE: Actas del Congreso Geologico Argentino. 10, Vol. 4; Pages 321-324. 1987.
NT - NOTES: Vulcanismo andino--Andean volcanism
PB - PUBLISHER: Asociacion Geologica Argentina. Buenos Aires, Argentina. 1987.
RP - RESEARCH PROGRAM: IGCP (International Geological Correlation Programme)
CP - COUNTRY OF PUBLICATION: Argentina
PY - PUBLICATION YEAR: 1987
CN - CONFERENCE INFORMATION: Decimo congreso geologico argentino. San Miguel de Tucuman, Argentina. Sept. 14-18, 1987.
LA - LANGUAGE: English
DE - DESCRIPTORS: andesites-; Cenozoic-; Central-Cordillera; Colombia-; Holocene-; IGCP-; igneous-rocks; Nevado-del-Ruiz; Nevado-del-Ruiz-Volcano; petrology-; Pleistocene-; Quaternary-; South-America; volcanic-rocks; volcanoes-; volcanology-
CC - CATEGORY CODES: 05A-Igneous-and-metamorphic-petrology
DT - DOCUMENT TYPE: Serial; Conference-Document
BL - BIB LEVEL: Analytic
NN - ANNOTATION: IGCP Project No. 249.
IL - ILLUSTRATION: Refs: 8
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0325-2620
CO - CODEN: AJOGBI
AN - ACCESSION NUMBER: 1988-011898
UD - UPDATE CODE: 1988
Registro 4149 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Shallow-water Octocorallia and related submarine lithification, San Andres Island, Colombia.
AU - AUTHORS: Kocurko-M-John
AF - AUTHOR AFFILIATION: Midwest. State Univ., Dep. Geol. and Geophys., Wichita Falls, TX, United States
SO - SOURCE: The Texas Journal of Science. 39; 4, Pages 349-365. 1987.
PB - PUBLISHER: Texas Academy of Science. San Angelo, TX, United States. 1987.
CP - COUNTRY OF PUBLICATION: United-States
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
DE - DESCRIPTORS: Anthozoa-; aragonite-; calcification-; carbonate-rocks; carbonates-; Coelenterata-; Colombia-; diagenesis-; Invertebrata-; limestone-; materials-; octocorals-; reefs-; San-Andres-Island; sedimentary-petrology; sedimentary-rocks; shallow-water-environment; South-America
CC - CATEGORY CODES: 06A-Sedimentary-petrology
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 9; illus. incl. 2 tables, 7 plates, sketch maps.
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0040-4403
CO - CODEN: TJSCAU
AN - ACCESSION NUMBER: 1988-013076
UD - UPDATE CODE: 1988
Registro 4150 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: On the main channel length-area relationship for channel networks.
AU - AUTHORS: Mesa-Oscar-J; Gupta-Vijay-K
AF - AUTHOR AFFILIATION: Univ. Nac. Colomb., Medellin, Colombia
SO - SOURCE: Water Resources Research. 23; 11, Pages 2119-2122. 1987.
PB - PUBLISHER: American Geophysical Union. Washington, DC, United States. 1987.
CP - COUNTRY OF PUBLICATION: United-States
PY - PUBLICATION YEAR: 1987
LA - LANGUAGE: English
AB - ABSTRACT: Motivated by the empirical relationship between the main channel length and the basin area for river networks, a similar equation is derived analytically using the random model postulates and the additional assumption that link lengths have a common exponential probability distribution. Specifically, it is shown that in networks with large magnitude m, the main channel length l(m), and the magnitude are related by l(m) approximately beta (2pi ) (super 1/2) (2m) ) (super 1/2) , where beta is mean link length. The result is utilized to explain another empirical relationship between the distance to the center of gravity l (sub c) (m) and the main channel length; l (sub c) (m) approximately 1(m)/2.--Modified journal abstract.
DE - DESCRIPTORS: channels-; drainage-basins; drainage-patterns; fluvial-features; fractals-; geomorphology-; hydrology-; mathematical-models; models-; networks-; quantitative-geomorphology; rivers-and-streams; theoretical-studies; waterways-
CC - CATEGORY CODES: 23-Geomorphology; 30-Engineering-geology; 21-Hydrogeology
DT - DOCUMENT TYPE: Serial
BL - BIB LEVEL: Analytic
IL - ILLUSTRATION: Refs: 23
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
IS - ISSN: 0043-1397
CO - CODEN: WRERAQ
AN - ACCESSION NUMBER: 1988-013165
UD - UPDATE CODE: 1988
Registro 4151 de 5614 - GeoRef Disc 3: 1985-1992
TI - TITLE: Actividad sismica posterior al proceso eruptivo del 13 de noviembre de 1985 en el Volcan Nevado del Ruiz, Colombia
Translated Title: Seismic activity after the eruption of November 13, 1985, Nevado del Ruiz Volcano, Colombia.
AU - AUTHORS: Gueendel-Umana-Federico; Gonzalez-Victor
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