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A NOTE ON SEISMO-TECTONICS OF CHОТАNAGPUR PLATEAU
L. S. SRIVASTAVA*, R. S. TIPNIS** AND U. N. JHINGRAN***
Paper No.: 109
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Vol.: 8
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No.: 2
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June, 1971
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pp. 96-105

Abstract
Chotanagpur has received considerable attention of Geologists with a view to win over its rich mineral resources. However, no detailed study of the seismotectonics of this tract comprising of Palamau, Hazaribagh, Gaya, Dhanbad, Ranchi and Singh- bhum districts has been made.
The earliest mention of earthquake occurrence in this region was by De. Ballore (1904) who indicated that the Damodar Valley is unstable and had an earthquake epіcentre along its bounding faults. Auden (1946) however considered that the region feels only the fringe effects of earthquakes which originate in the Gangetic and Brahmputra plains extending from North Bihar; through Bengal, to Assam. In his opinion since the region forms a part of the stable Peninsula and has not undergone faulting or folding since the Mesozoic era, although it has subsequently been subjected to regional uplifts, severe shocks do not originate in this region. This view is a result of lack of data, as Chotanagpur is a land without a written history and the records are a few of all that has occurred more than two centuries ago. From the seismic point of view little is known and the published work or observations of great authenti- city do not exist. This note describes in brief the available evidences on earthquake occurrences and the geomorphological and tectonic evidences for an evaluation of seismo-tectonic setup of the area, which indicates, that Chotanagpur plateau should have higher seismic status as severe shocks can occur in this region. As many river valley projects and industrial undertaking have been constructed and are under planning or construction, a severe shock in their vicinity could result in great calamity and disaster.
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