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Geochemical evidence for the volcanic arc tectonic setting of the Dhanjori volcanics, Singhbhum craton, eastern India

Published online by Cambridge University Press:  01 May 2009

Shabber H. Alvi
Affiliation:
Department of Geology, Aligarh Muslim University, Aligarh 202002, India
M. Raza
Affiliation:
Department of Geology, Aligarh Muslim University, Aligarh 202002, India

Abstract

Geochemical data on the Dhanjori volcanics of the Singhbhum craton indicate that they range from basalt to andesite and show an iron-enrichment trend. Various chemical characteristics suggest that they are differentiated along the trend similar to that of orogenic suites and have a strong affinity with island arc tholeiites. The field relationships as well as other geological information also support this conclusion and indicate their eruption on a thin continental margin. It is inferred that the Dhanjori volcanics were probably erupted as a result of plate convergence in northern Singhbhum with subduction of oceanic crust below the Singhbhum craton.

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Articles
Copyright
Copyright © Cambridge University Press 1992

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