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Imsong, Watinaro
- Ascertaining the Neotectonic Activities in the Southern Part of Shillong Plateau through Geomorphic Parameters and Remote Sensing Data
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Authors
Affiliations
1 Wadia Institute of Himalayan Geology, Dehradun 248 001, IN
2 Department of Geological Sciences, Gauhati University, Guwahati 781 013, IN
1 Wadia Institute of Himalayan Geology, Dehradun 248 001, IN
2 Department of Geological Sciences, Gauhati University, Guwahati 781 013, IN
Source
Current Science, Vol 110, No 1 (2016), Pagination: 91-98Abstract
Study of quantitative morphometric parameters was taken up in four major river valleys in the southern part of Shillong Plateau using SRTM DEM in GIS. The study indicates that the region is undergoing differential uplift. This is evidenced by preferential tilting towards east, while the central part of the plateau exhibits higher rate of uplift than the eastern and western segments. We ascribed the higher rate of uplift in the central segment of Shillong Plateau to the activity along the Dapsi Thrust and Dauki Fault.Keywords
Active Tectonics, Geomorphic Parameters, Morphometry, Remote Sensing, River Basins.Full Text
- Geomorphic Evidence of Late Quaternary Displacement of the Karakoram Fault in Nubra and Shyok Valleys, Ladakh Himalaya
Abstract Views :215 |
PDF Views:117
Authors
Affiliations
1 Wadia Institute of Himalayan Geology, Dehradun 248 001, IN
2 Institute of Seismological Research, Gandhi Nagar 382 421, IN
3 Department of Geological Sciences, Gauhati University, Guwahati 781 013, IN
1 Wadia Institute of Himalayan Geology, Dehradun 248 001, IN
2 Institute of Seismological Research, Gandhi Nagar 382 421, IN
3 Department of Geological Sciences, Gauhati University, Guwahati 781 013, IN
Source
Current Science, Vol 112, No 11 (2017), Pagination: 2295-2305Abstract
The present study ascertains the spatial variability in the extent of activity of the Karakoram Fault (KF) in Nubra and Shyok river valleys (Karakoram), which was known to be active during the Holocene. Towards this we have used conventional morphometric indices supported by geomorphological observations on the pattern of alluvial and bedrock streams, alluvial fan geometry and moraines. The right lateral displacement associated with KF is geomorphologically expressed by the lateral deflections of the bedrock and alluvial streams toward northwest-southeast as they cut across the Fault. Indirect age estimates inferred based on slip rate of KF suggest that the deflection of bedrock streams with prominent shutter ridges is the cumulative expression of activity of KF since the middle Pleistocene, which continued till the late Holocene.Keywords
Alluvial and Bedrock Streams, Geomorphic Evidence, Morphometry, Right Lateral Displacement.Full Text
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