Seismotectonics of the 20 October 1991 Uttarkashi earthquake in Garhwal, Himalaya, North India

Thakur, V. C. ; Kumar, Sushil (1994) Seismotectonics of the 20 October 1991 Uttarkashi earthquake in Garhwal, Himalaya, North India Terra Nova, 6 (1). pp. 90-94. ISSN 0954-4879

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Official URL: http://onlinelibrary.wiley.com/doi/10.1111/j.1365-...

Related URL: http://dx.doi.org/10.1111/j.1365-3121.1994.tb00637.x

Abstract

The 20 October 1991 Uttarkashi earthquake killed over a thousand people and caused extensive damage to property in the Garhwal Himalaya region. The body wave magnitude of the earthquake was 6.6, and the fault plane solution indicates reverse faulting. The hypocenrre was located at a focal depth of about 12 km between the Chail and Jutogh Thrusts, but movement propagated southward along the Jamak-Gangori Fault (JGF) and Dunda fault (DF) which are developed as blind faults related to the growing Uttarkashi antiform.

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