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Thakkar, M. G.
- Quaternary Tectonic History and Terrain Evolution of the Area Around Bhuj, Mainland Kachchh, Western India
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Authors
Affiliations
1 Department of Geology, M.S. University of Baroda, Baroda - 390002, IN
1 Department of Geology, M.S. University of Baroda, Baroda - 390002, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 53, No 5 (1999), Pagination: 601-610Abstract
The Mainland Kachchh has witnessed several phases of tectonic movements since the formation of Kachchh rift. The structural set up of the area is dominated by two fault systems - an E-W fault system which controls the geomorphic configuration and a NNW-SSE to NNE-SSW fault system which displaces the E-W faults. The Quaternary deposits of the area, alluvial and colluvial fans, channel deposits and miliolites help in categorising Quaternary tectonic activity into two phases. Reactivation of E-W trending faults during Early Pleistocene led to the present landscape configuration and formation of extensive alluvial and coIluvial fans along these faults. The post miliolite phase resulted in movements along transverse faults as evidenced by a very youthful fault scarp morphology and faulting in postmiliolite alluvial sediments along this trend. The mountain front sinuosity values also suggest a younger phase of tectonic activity along the transverse faults. The first order topography and the seismic activity suggest continued tectonic instability of the region.Keywords
Quaternary Tectonism, Terrain Evolution, Mountain Front Sinuosity, Kachchh.
- Internal Geometry of Reactivated and Non-Reactivated Sandblow Craters Related to 2001 Bhuj Earthquake, India: A Modern Analogue for Interpreting Paleosandblow Craters
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Authors
Affiliations
1 Department of Earth and Environmental Science, KSKV Kachchh University, Bhuj, Kachchh - 370 001, IN
2 Department of Geology, M. S. University of Baroda, Vadodara - 390 002, IN
1 Department of Earth and Environmental Science, KSKV Kachchh University, Bhuj, Kachchh - 370 001, IN
2 Department of Geology, M. S. University of Baroda, Vadodara - 390 002, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 79, No 4 (2012), Pagination: 367-375Abstract
The liquefaction attributes and crater geometry related to 2001 Bhuj earthquake has been reconstructed by trenching along large known craters formed near Umedpar in Kachchh. The study characterises the liquefied sediments in a large reactivated crater and distinguishes it from a non-reactivated crater located nearby. These characteristics can help in the interpretation of large paleocraters formed as a result of earthquake induced liquefaction.Keywords
Liquefaction, Crater Geometry, Intra-Plate Seismicity, Kachchh.References
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