TITLE:
Interpretation of Dune Genesis from Sedimentogical Data and Ground Penetrating Radar (GPR) Signatures: A Case Study from Ashirmata Dune Field, Mandvi Beach, Gujarat, India
AUTHORS:
Deshraj Trivedi, Koravangatt Devi, Ilya Buynevich, P. Srinivasan, K. Ravisankar, Vipul Silwal, D. Sengupta, Rajesh R. Nair
KEYWORDS:
Coastal Dune; Ashirmata Region; Sedimentogical Analysis; Ground Penetrating Radar; Paleosol
JOURNAL NAME:
International Journal of Geosciences,
Vol.3 No.4,
September
11,
2012
ABSTRACT: The coastal dunes located near the Ashirmata region, south of Mandvi beach lies near the straight coast have been stud-ied by making use of sedimentological information and Ground Penetrating Radar (GPR) data. Sedimentological analy-sis reveals the NNW-SSE trending longitudinal dunes consists of well sorted fine sands with unimodal distribution pos-sibly formed by constant wind gust and also the point out to the origin of sediments from single source; mostly the sediments derived from Indus delta transported to beach by long shore drift and tidal waves, carried inland by local on-shore winds. The radargram confirms, the homogenous sand layers with paleosols at shallow depth slip faces are proba-bly formed due to extreme storm activity of Recent.