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GEOREF RECORD

Evolution of southern Caribbean Plate boundary, vicinity of Trinidad and Tobago

Paul Robertson and Kevin Burke
Evolution of southern Caribbean Plate boundary, vicinity of Trinidad and Tobago
AAPG Bulletin (April 1989) 73 (4): 490-509

Abstract

Two processes-oblique collision of an island-arc and strike-slip motion parallel to the South American coast-have been suggested as dominant in the tectonic evolution of the southeastern corner of the Caribbean. Field work in the El Pilar fault zone of Trinidad and interpretation of offshore seismic data lead us to conclude that the dominant process was strike-slip motion on five or more major fault systems within a 250-km wide east-west-trending plate-boundary zone extending north to south from Grenada to the mouth of the Orinoco River. During the last 30 m.y., movements in this fault zone (1) diverted the Orinoco River eastward, (2) juxtaposed blocks with diverse stratigraphic characteristics, and (3) generated secondary extensional, compressional, and strike-slip structures including anticlines of northeast to north-northeast trend of which the Tobago arch, the Central Range of Trinidad, and the deformed mud diapirs off the southeastern coast of Trinidad are the most prominent.


ISSN: 0149-1423
EISSN: 1558-9153
Coden: AABUD2
Serial Title: AAPG Bulletin
Serial Volume: 73
Serial Issue: 4
Title: Evolution of southern Caribbean Plate boundary, vicinity of Trinidad and Tobago
Affiliation: Univ. Houston, Dep. Geosci., Houston, TX, United States
Pages: 490-509
Published: 198904
Text Language: English
Publisher: American Association of Petroleum Geologists, Tulsa, OK, United States
Accession Number: 1989-029911
Categories: Solid-earth geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
N12°00'00" - N12°13'60", W61°47'60" - W61°36'00"
N02°10'00" - N08°30'00", W67°52'00" - W61°00'00"
N10°00'00" - N11°30'00", W62°00'00" - W60°15'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute.
Update Code: 1989
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