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Srivastava, H. B.
- Strain Analysis in the Basal Unit of Delhi Supergroup in Kishangarh Area (Rajasthan): As Deduced from Deformed Pebbles
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Authors
Affiliations
1 Department of Geology, Banaras Hindu University, Varanasi 221 005, IN
1 Department of Geology, Banaras Hindu University, Varanasi 221 005, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 27, No 5 (1986), Pagination: 440-449Abstract
The arkosic quartzites overlying the rocks of Aravalli Supergroup along an unconformity cum thrust contact, exhibit strong deformation resulting in preferred dimensional orientation of the pebbles. The three dimensional strain is of constriction type where the mean value of k varies from 1.33 to 6.52 from locality to locality. The shapes of the pebbles prior to deformation were mainly of constriction type. The path of pebble deformation has been traced. The strain in these pebbles is related to folding and later thrusting (gliding) during the first phase of deformation.- Popularizing Geology in Schools
Abstract Views :169 |
PDF Views:125
Authors
Affiliations
1 Convener, North Indian Chapter Geological Society of India
2 Department of Geology Banaras Hindu University Varanasi -221005, IN
3 Department of Geology Banaras Hindu University Varanasi -221 005, IN
1 Convener, North Indian Chapter Geological Society of India
2 Department of Geology Banaras Hindu University Varanasi -221005, IN
3 Department of Geology Banaras Hindu University Varanasi -221 005, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 69, No 6 (2007), Pagination: 1377-1378Abstract
No Abstract.- Contact Course on Experimental Structural Geology
Abstract Views :179 |
PDF Views:129
Authors
Affiliations
1 Dept. of Geology Lucknow University Lucknow, IN
2 Dept. of Geology, BHU, Varanasi - 221 005, IN
3 Wadia Institute of Himalayan Geology, Dehra Dun - 248 001, IN
1 Dept. of Geology Lucknow University Lucknow, IN
2 Dept. of Geology, BHU, Varanasi - 221 005, IN
3 Wadia Institute of Himalayan Geology, Dehra Dun - 248 001, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 65, No 4 (2005), Pagination: 507-508Abstract
No Abstract.- Group Monitoring and Project Advisory Committee Meetings of DST at Banaras
Abstract Views :185 |
PDF Views:144
Authors
Affiliations
1 Department of Geology Banaras Hindu University Varanasi - 221 005, IN
1 Department of Geology Banaras Hindu University Varanasi - 221 005, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 63, No 2 (2004), Pagination: 236-237Abstract
No Abstract.- Mylonitic Microfabrics from the Rocks of MCT Zone in Alakhnanda Valley, Garhwal Himalaya
Abstract Views :176 |
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Authors
Affiliations
1 Department of Geology, Banaras Hindu University, Varanasi-221 005, IN
1 Department of Geology, Banaras Hindu University, Varanasi-221 005, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 75, No Spl Iss 1 (2010), Pagination: 152-159Abstract
MCT Zone of Alakhnanda valley is a major ductile shear zone in Garhwal Himalaya, which is characterised by different types of mylonite rocks. On the basis of grain size and the percentage of matrix in the rock, zones comprising protomylonite, augen mylonite, mylonite and ultramylonite have been identified. The study of microstructures, grain size and crystallographic preferred orientation of quartz c-axis fabric reveals that the rocks of the MCT zone were deformed by a combination of intracrystalline creep (power law creep) and grain boundary migration (sliding super plasticity).Keywords
Microfabrics, Mylonite, MCT, Garhwal Himalaya.References
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