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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  and
M. Raza
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
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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.

Type
Articles
Information
Geological Magazine , Volume 129 , Issue 3 , May 1992 , pp. 337 - 348
Copyright
Copyright © Cambridge University Press 1992

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