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A Miocene submarine volcano at Low Layton, Jamaica

Published online by Cambridge University Press:  01 May 2009

G. Wadge
G. Wadge
Affiliation:
Lunar and Planetary Institute, 3303 NASA Road One, Houston, Texas 77058, U.S.A.
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Summary

A submarine fissure eruption of Upper Miocene age produced a modest volume of alkaline basalt at Low Layton, on the north coast of Jamaica. The eruption occurred in no more than a few hundred metres of water and produced a series of hyaloclastites, pillow breccias and pillow lavas, massive lavas, and dikes with an ENE en échelon structure. The volcano lies on the trend of one of the island's major E–W strike-slip fault zones: the Dunavale Fault Zone. The K–Ar age of the eruption of 9.5 ± 0.5 Ma. B.P. corresponds to an extension of the Mid-Cayman Rise spreading centre inferred from magnetic anomalies and bathymetry of the Cayman Trough to the north and west of Jamaica. The Low Layton eruption was part of the response of the strike-slip fault systems adjacent to this spreading centre during this brief episode of tectonic readjustment.

Type
Articles
Information
Geological Magazine , Volume 119 , Issue 2 , March 1982 , pp. 193 - 199
Copyright
Copyright © Cambridge University Press 1982

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