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Abstract
Chapter from: M
62:Petroleum Basins of South America
Edited by
A. J. Tankard, R. Suarez Soruco, and H. J. WelsinkAuthors:
J. L. Pindell and K. D. Tabbutt Basin and Aerial Analysis/Evaluation
Published 1995 as
part of Memoir 62
Copyright © 1995 The American Association of Petroleum
Geologists. All Rights Reserved.
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Mesozoic-Cenozoic
Andean Paleogeography and Regional Controls on Hydrocarbon Systems
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James L. Pindell
Department of Earth Sciences
Dartmouth College
Hanover, New Hampshire,
U.S.A.
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Kenneth D. Tabbutt
Evergreen State College
Olympia, Washington,
U.S.A.
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Abstract
Palinspastic
paleogeographic maps of western and northern South America, including the
entire 8500-km "Andean system" from Trinidad to Cape Horn, are presented
for nine Mesozoic-Cenozoic time intervals. The maps show (1) the spatial
record of formational lithostratigraphic units; (2) continental, shallow
marine, and deeper marine paleoenvironments and the location of active
magmatic arcs through time; (3) progressive structural and tectonic development;
(4) relative motions of adjacent plates affecting the Andes; and (5) paleolatitude.
Phases and causes of geologic development are summarized from the maps
and other information. Depositional systems are related to tectonic evolution,
with implications drawn for hydrocarbon systems and history. It is shown
that tectonic, depositional, and hydrocarbon histories are closely interrelated,
having occurred in fairly discrete pulses through time, each with its own
significance to hydrocarbon potential. |
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