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Silicification of low-magnesium mollusc shells from the Upper Oligocene of Antigua, Lesser Antilles

Strang, K.M.; Harper, D.A.T.; Donovan, S.K.; Portell, R.W.

Authors

K.M. Strang

S.K. Donovan

R.W. Portell



Abstract

Silicified molluscs, namely the oyster Hyotissa and the scallop Aequipecten?, are commonly preserved as silica in the carbonate successions on the island of Antigua. These fossil assemblages are located within the Antigua Formation, above and adjacent to a variety of volcanic and volcaniclastic rocks, suggesting, on geological grounds, an igneous source for the silica. Energy dispersive spectroscopy (EDS) and cathodoluminescence (CL) have been applied to characterise the silcification and its conditions of formation which may have been associated with hydrothermal activity.

Citation

Strang, K., Harper, D., Donovan, S., & Portell, R. (2018). Silicification of low-magnesium mollusc shells from the Upper Oligocene of Antigua, Lesser Antilles

Journal Article Type Article
Acceptance Date Nov 1, 2017
Online Publication Date Apr 14, 2018
Publication Date Apr 14, 2018
Deposit Date Apr 14, 2018
Publicly Available Date Mar 29, 2024
Journal Caribbean journal of earth sciences
Print ISSN 0799-0901
Peer Reviewed Peer Reviewed
Volume 50
Pages 37-43
Publisher URL http://caribjes.com/CJESpdf/CJES50-6-Strang-Silicification.pdf