A Reinterpretation of the Geological History of the Singhbhum Shear Zone, Bihar

Authors

  • A. K. Banerji
     Department of Geology, Presidency College, Calcutta

Abstract

The Singhbhum shear zone represents a deep seated fracture that probably extended up to the upper mantle through which basic rocks poured out continuously and extensively together with some ultrabasic rocks. The northern block gradually subsided and received sediments interlayered with basic rocks and tuffs, with a conglomerate horizon at tbe base. Subsequently the movements were reversed along the line of fracture and it was transformed into a zone of shearing within which migma-magma activity and mineralisation took place. Residual stresses within the shear zone were released through wrench faulting after which the shearing movements resumed locally and continued even up to recent times at some places.

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Issue

Volume 10, Issue 1, June 1969

Section

Articles

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Published

1969-06-10

How to Cite

Banerji, A. K. (1969). A Reinterpretation of the Geological History of the Singhbhum Shear Zone, Bihar. Journal of Geological Society of India, 10(1), 49–55. Retrieved from https://geosocindia.com/index.php/jgsi/article/view/60606

References

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