Preprint Article Version 1 This version is not peer-reviewed

Assessment of Relative Active Tectonics in Parts of Aravalli Mountain Range, India: Implication of Geomorphic Indices, Remote Sensing and GIS

Version 1 : Received: 30 December 2017 / Approved: 2 January 2018 / Online: 2 January 2018 (09:41:41 CET)

How to cite: Ali, S.A.; Ikbal, J. Assessment of Relative Active Tectonics in Parts of Aravalli Mountain Range, India: Implication of Geomorphic Indices, Remote Sensing and GIS. Preprints 2018, 2018010008 (doi: 10.20944/preprints201801.0008.v1). Ali, S.A.; Ikbal, J. Assessment of Relative Active Tectonics in Parts of Aravalli Mountain Range, India: Implication of Geomorphic Indices, Remote Sensing and GIS. Preprints 2018, 2018010008 (doi: 10.20944/preprints201801.0008.v1).

Abstract

Aravalli Mountain Range is an example of erosional mountains, trending NE-SW, shows numerous faults and lineaments. Udaipur area, situated south-east part of the mountain, is considered as tectonically active. So the main objective is to study relative tectonic activity of the Ahar watershed of Udaipur, Rajasthan, India. To assess relative tectonic activity of the area, geomorphic indices such as stream length gradient index (SL), asymmetry factor (Af), basin shape (Bs), valley floor width to valley height ratio (Vf), mountain front sinuosity (Smf), hypsometic integral (Hi), hypsometric curve and transverse topographic symmetry factor (T) is applied. DEM (SRTM), Google earth image and enhanced image of Landsat TM (2008) is used to extract linear features. Result of these geomorphic indices of each sub-watersheds are used to divide area from low to high relative tectonic activity classes, expressed as relative tectonic active index (Iat) and according to Iat value the sub watershed UDSW2, 3 and 4 is tectonically relatively more active than remaining part of the area. Field validation associated with evidences highlighted by using geomorphic indices as well as stream deflrction and lineament analysis reveals that the Ahar watershed of Aravalli Range, particularly the north-western flank, is most affected by tectonic activity.

Subject Areas

eomorphic indices; relative active tectonics; stream deflection; lineament; Aravalli range

Readers' Comments and Ratings (1)

Comment 1
Received: 2 January 2018
Commenter: Hamdi Aldharab
The commenter has declared there is no conflict of interests.
Comment: Very good task, and the paper has completed all the seven parameters as well as field verification and angle of stream deflection.
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