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Book Chapter

The Archipelago Group: current understanding

By
P. C. Bandopadhyay
P. C. Bandopadhyay
1
Department of Geology, University of Calcutta, 35 Ballygunge Circular Road, Kolkata-19, India
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;
A. Carter
A. Carter
2
Department of Earth & Planetary Sciences, Birkbeck, University of London, London, UK
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Published:
January 01, 2017

Abstract

The geology and stratigraphy of the Archipelago Group are reviewed and new data presented to improve understanding. Major lithofacies are bioclastic limestones, bioturbated mottled marlstones, micritic limestones, trace fossil-bearing mudstones, quartzose sandstones and reworked volcanic material of Mio-Pliocene and Pleistocene age. The succession overlies the Pre-Neogene submarine fan turbidites and tectonic mélanges of ophiolite derivation and Mithakhari rocks, and is overlain by Quaternary deposits of late Pleistocene–Holocene age. The Neogene sequences were deposited in wave- and current-agitated shallow-marine intertidal and relatively deeper-water subtidal, nearshore and offshore shelfal environments. The existing stratigraphic framework is examined and suggestions made for improvement.

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Geological Society, London, Memoirs

The Andaman–Nicobar Accretionary Ridge: Geology, Tectonics and Hazards

P. C. Bandopadhyay
P. C. Bandopadhyay
University of Calcutta, India
Search for other works by this author on:
;
A. Carter
A. Carter
Birkbeck University of London, UK
Search for other works by this author on:
Geological Society of London
Volume
47
ISBN electronic:
9781786203007
Publication date:
January 01, 2017

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