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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract


Pub. Id: A110 (1982)

First Page: 347

Last Page: 358

Book Title: M 34: Studies in Continental Margin Geology

Article/Chapter: Episutural Oligo-Miocene Basins along the North Venezuelan Margin: Convergent Margins: Field Investigations of Margin Structure and Stratigraphy

Subject Group: Geologic History and Areal Geology

Spec. Pub. Type: Memoir

Pub. Year: 1982

Author(s): B. Biju-Duval, A. Mascle, H. Rosales, G. Young

Abstract:

Multichannel seismic reflection surveys across the North Venezuelan margin between 64 and 70° W provide new data on the three major structural elements of the area; the Venezuelan Basin margin along the Curacao Ridge, the episutural Falcon and Bonaire Basins, and the southern Guyana Shield continental crust. The Curacao Ridge consists of a thick, elongated belt of deformed sediments; it resulted from Neogene underthrusting of Venezuelan Basin crust. The formation of the onshore Falcon and offshore Bonaire Basins appears to have begun in Middle or Late Eocene. Structures observed in these basins suggest regional compression with attendant folding, faulting, and differential vertical movement. Northern elements of the Guyana Shield, including the Merida Andes to the west, appear to have been involved to some extent in tectonic movements of the margin in Cretaceous to Pliocene times.

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