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Southern Lesser Antilles Arc Platform: Pre-Late Miocene

Southern Lesser Antilles Arc Platform: Pre-Late Miocene

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Full Title: Southern Lesser Antilles Arc Platform: Pre-Late Miocene Stratigraphy, Structure, and Tectonic Evolution

Authors: R.C. Speed, P.L. Smith-Horowitz, K.v.S. Perch-Nielsen, J.B. Saunders, and A.B. Sanfilippo


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A comprehensive study of older rocks of Grenada and the Grenadine islands of the southern Lesser Antilles arc platform (SLAAP). Focuses on the structural and stratigraphic evolution of the arc platform that led up to its Neogene emergence as a magmatic arc and an east-tilted half horst. A six-stage evolutionary model is proposed: (1) middle Eocene oceanic-spreading in a basin probably contiguous with the Grenada Basin; (2) Paleogene basinal sedimentation with provenance from a non-SLAAP arc; (3) NS contraction in late Oligocene or early Miocene; (4) middle Miocene uplift and local magmatism; (5) EW contraction; and (6) normal faulting and widespread volcanism from 12 Ma to present.

[ Table of Contents ]

Published: 10/05/1993

ISBN Number: 0813722772

Pages: 98

Product Category: Special Papers