Skip to Main Content
GEOREF RECORD

Oblique collision and tectonic wedging of the South American continent and Caribbean terranes

Raymond M. Russo and R. C. Speed
Oblique collision and tectonic wedging of the South American continent and Caribbean terranes
Geology (Boulder) (May 1992) 20 (5): 447-450

Abstract

Our studies of the surface structures, seismicity, and gravity anomalies of the Caribbean-South American plate-boundary zone of northeast Venezuela and Trinidad show that the crustal and upper lithospheric structure and kinematics of this zone are complex and differ markedly along strike. We propose a model of the zone's lateral transition from near Trinidad west to Caracas, emphasizing three concepts: (1) the steepening, detachment, and then sinking away of Atlantic oceanic lithosphere that is (was) attached to the northern edge of continental South America; (2) the wedging seaward and imbricate thickening of the northern margin of the continent in the region of the detaching Atlantic slab; the continental wedge overrides the slab and is overridden by terranes attached to the Caribbean plate; and (3) that the structural and kinematic transitions are a consequence of the progressive oblique collision between continental South America and the overriding Caribbean terranes.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 20
Serial Issue: 5
Title: Oblique collision and tectonic wedging of the South American continent and Caribbean terranes
Affiliation: Northwest. Univ., Dep. Geol. Sci., Evanston, IL, United States
Pages: 447-450
Published: 199205
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 27
Accession Number: 1992-017365
Categories: Solid-earth geophysics
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: sects., sketch maps
N10°00'00" - N11°30'00", W62°00'00" - W60°15'00"
N00°45'00" - N12°10'00", W73°15'00" - W59°55'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1992
Close Modal
This Feature Is Available To Subscribers Only

Sign In or Create an Account

Close Modal
Close Modal