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Authors
Affiliations
1 National Institute of Oceanography, Regional Centre, Visakhapatnam 530023, IN
2 Department of Geology, Kakatiya University, Warangal 508006, IN
Source
Journal of Geological Society of India (Online archive from Vol 1 to Vol 78), Vol 39, No 3 (1992), Pagination: 205-211
Abstract
Beach sediments with a phi mean size varying from 1.07 to 2.9 are well to moderately sorted and to a great extent negatively skewed. On the inner shelf, the sediments exhibit a wide range (0.9φ and 10φ) in mean grain-size. While most of the inner shelf is covered with fine silts and clays, sandy sediments occupy a linear belt in the outer parts (-25 to -30 m) of the shelf. These moderately sorted sands are considered to be relict and deposited during a standstill of the Holocene transgression. The CM pattern suggests that the sandy sediments in the inner shelf like the beach sands were deposited under high energy conditions. The well-preserved sands indicate that the existing hydrodynamic conditions on the inner shelf are neither strong enough to rework the sediments nor transport the modern river-contributed fine sediments to the outer parts.
Keywords
Continental Shelf, Holocene Transgression, Strand Line Deposit, West Coast, Cochin.
