RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute. Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique, Vandoeuvre-les-Nancy, France
IS - ISSN: 0408-9510
CO - CODEN: BSGMB2
AN - ACCESSION NUMBER: 1995-048081
UD - UPDATE CODE: 199518
Registro 5122 de 5614 - GeoRef Disc 4: 1993-1996
BK - BOOK TITLE: Seismic stratigraphy of the Cenozoic northwestern Guajira Basin; offshore Colombia.
BA - BOOK AUTHORS: Wang-Rongjiao
CP - COUNTRY OF PUBLICATION: United-States
PY - PUBLICATION YEAR: 1993
DG - DEGREE GRANTED: Master's
DI - DEGREE GRANTING INSTITUTION: University of Oklahoma. Norman, OK, United States. Pages: 117. 1993.
LA - LANGUAGE: English
AB - ABSTRACT: The Chuchupa and Ballena are two of northern Colombia's largest gas fields which produce from Paleogene carbonates and clastics of the Guajira Basin. In order to define the three dimensional architecture and temporal interplay between these Cenozoic carbonates and siliciclastic depositional systems as well as the relationships between these units and relative changes in sea level. a seismic stratigraphic analysis was conducted for the Cuiza Platform of the offshore Guajira Basin. The data for analysis included paleontology and petrophysics from two boreholes and approximately 600 kms of reflection seismic provided by the Texas Petroleum Company Colombian Division. Fourteen major seismic sequences were defined from seismic and geologically constrained with well synthetics. Most of the sequence boundaries coincide with global sea level falls, while the remainder suggest instead local basinal depositional events. Through time the shelf edge has prograded to the northwest. Paleogene shallow water mixed clastics and carbonates deepen to turbidite deposition which then shallowed to Neogene deltaic sedimentation. Carbonate influence began once more to dominate by the Pliocene. Seismic facies analysis was conducted upon both the carbonates and clastics. According to a seismic classification of the Miocene widespread deltaics, these sediments are medium amplitude, long wavelength, high gradient, acute dipping clinoform reflectors interpreted as alternating progradational medial to distal shelf highstand wave dominated clastic wedges. Hydrocarbon reservoir quality in these ancestral highstand Rio Ranchera deltaic sands is considered to be good, but the top seal is questionable. However, direct hydrocarbon indicators from seismic attribute analysis of truncated reflectors imply the existence of seals by the fines of the subsequent offlapping deltaics. Similar dramatic progradational wedge geometries are generated by the overlying Pliocene carbonate shelf-edge reefal buildups.
RF - REFERENCE SOURCE: GeoRef, Copyright 2000, American Geological Institute.
CO - CODEN: #03828
AN - ACCESSION NUMBER: 1996-005838
UD - UPDATE CODE: 199603
Registro 5134 de 5614 - GeoRef Disc 4: 1993-1996
TI - TITLE: Catastrophic volcanic collapse; relation to normal hydrothermal processes.
AU - AUTHORS: Lopez-Dina-L; Williams-Stanley-N
AF - AUTHOR AFFILIATION: University of British Columbia, Department of Geological Sciences, Vancouver, BC, Canada
BK - BOOK TITLE: In: Geological Association of Canada; Mineralogical Association of Canada; annual meeting; program with abstracts--Association Geologique du Canada; Association Mineralogique du Canada; reunion annuelle; programme et resumes.
BA - BOOK AUTHORS: Anonymous
SO - SOURCE: Program with Abstracts - Geological Association of Canada; Mineralogical Association of Canada; Canadian Geophysical Union, Joint Annual Meeting. 1993; Pages 61. 1993.
PB - PUBLISHER: Geological Association of Canada. Waterloo, ON, Canada. 1993.
CP - COUNTRY OF PUBLICATION: Canada
PY - PUBLICATION YEAR: 1993
CN - CONFERENCE INFORMATION: Geological Association of Canada; Mineralogical Association of Canada; annual meeting; program with abstracts--Association Geologique du Canada; Association Mineralogique du Canada; reunion annuelle; programme et resumes. Edmonton, AB, Canada. May 17-19, 1993.