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Himalayan Geology, Vol. 31
(2), 2010, pp. 107-115, Printed in India
Microseismicity in central part of Inner Kumaun Lesser Himalaya:
Implication to active seismotectonics
AJAY PAUL1, S.S. BHAKUNI1, CHARU C. PANT2, G.S.DARMWAL2, V. PATHAK2
1Wadia Institute of Himalayan Geology, Dehradun – 248 001, India
2Dept. of Geology, Kumaun University, Nainital – 263 002, India
Email:
ajaypaul@wihg.res.in
Abstract: A Digital Telemetered Seismic Network was deployed in the
year 1999 in Kumaun Himalaya to monitor local and regional seismic
activities. The present study incorporates the analysis of 168 earthquake
events that have occurred between 1999 and 2005. The local magnitudes of
these shallow-depth events lie between 0.2 and 4.2. Two composite fault
plane solutions for events of depths <16 km and >16 km show strike-slip
fault and thrust fault mechanisms, respectively The structural and
geomorphic evidence show that the inner Kumaun Lesser Himalaya has been
active in recent times with respect to the listric fault tectonics of the
region.
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