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Late Pleistocene Relative Sea-Level Changes from Saurashtra, West Coast of India


Affiliations
1 Active Tectonics Group, Institute of Seismological Research, Gandhinagar 382 009, Korea, Democratic People's Republic of
2 Department of Geology, The M.S. University of Baroda, Vadodara 390 002, Korea, Democratic People's Republic of
3 Department of Geology, Kangwon National University, Kangwon 24341, Korea, Democratic People's Republic of
 

The fluvial systems of Saurashtra, Gujarat, India have archived signatures of sea-level stands for the Late Quaternary Period. Based on geomorphology, sedimentology and optical dating, the lower reaches of Noli river in southwestern Saurashtra reveal the presence of marine, fluvially reworked and aeolian forms of miliolite. Optical chronology permits us to extend the age range of fluvially reworked miliolites from 75 (as previously believed) to 114 ka. The fluvial sequence of southwestern Saurashtra has responded to sea-level changes through meandering. Presence of aeolian miliolites dated to 23 ka suggests regional aridity during the time of their deposition and preservation. Marine notches in Diu mark Middle Holocene high sea-level stand and their preservation implies active tectonism in the region.

Keywords

Fluvial Response, Optical Dating, Miliolites, Sea-Level Change.
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  • Late Pleistocene Relative Sea-Level Changes from Saurashtra, West Coast of India

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Authors

S. P. Prizomwala
Active Tectonics Group, Institute of Seismological Research, Gandhinagar 382 009, Korea, Democratic People's Republic of
Gunjan Yadav
Active Tectonics Group, Institute of Seismological Research, Gandhinagar 382 009, Korea, Democratic People's Republic of
Nilesh Bhatt
Department of Geology, The M.S. University of Baroda, Vadodara 390 002, Korea, Democratic People's Republic of
Komal Sharma
Department of Geology, Kangwon National University, Kangwon 24341, Korea, Democratic People's Republic of

Abstract


The fluvial systems of Saurashtra, Gujarat, India have archived signatures of sea-level stands for the Late Quaternary Period. Based on geomorphology, sedimentology and optical dating, the lower reaches of Noli river in southwestern Saurashtra reveal the presence of marine, fluvially reworked and aeolian forms of miliolite. Optical chronology permits us to extend the age range of fluvially reworked miliolites from 75 (as previously believed) to 114 ka. The fluvial sequence of southwestern Saurashtra has responded to sea-level changes through meandering. Presence of aeolian miliolites dated to 23 ka suggests regional aridity during the time of their deposition and preservation. Marine notches in Diu mark Middle Holocene high sea-level stand and their preservation implies active tectonism in the region.

Keywords


Fluvial Response, Optical Dating, Miliolites, Sea-Level Change.

References





DOI: https://doi.org/10.18520/cs%2Fv115%2Fi12%2F2297-2301