Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

P. S. Rao ¹, R. Sundaram ²

Affiliations
1 4313, Anna Nagar, Madras-40, IN
2 5/36, C.P.W.D. Quarters, Indira Nagar, Madras 600024, IN

Abstract

No Abstract.

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P. Divakar Naidu ¹, P. S. Rao ¹, J. N. Pattan ¹

Affiliations
1 National Institute of Oceanography, Dona Paula, Goa 403 004, IN

Abstract

An investigation on planktonic foraminifera and calcium carbonate content of a box core collected at a depth of 2556 m from the southern part of the Arabian sea indicates faunal changes depicting Quaternary climatic fluctuations. Based on the study the Last Glacial Maxima (LGM) boundary is placed at 65 cm and below LGM. Three warm and two cold episodes are identified.

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P. S. Rao ¹, V. N. Kodagali ¹, T. Ramprasad ¹, R. R. Nair ¹

Affiliations
1 National Institute of Oceanography, Dona Paula, Goa-403 004, IN

Abstract

Morphology of a living coral bank (Gaveshani Bank) is described using multibeam swath bathyrnetric survey system Hydrosweep. The bank has a height of 42 m, length of 2 km and a maximum width of 1.66 km, with steep flanks and flat top. It has a north-souh orientation and occupies an arca of about 3 sq km. A 100% coverage obtaincd in the present study enables us to determine the exact morphology of the bank. A comparison with the single beam echosounding data reveals that the dimensions (length and breadth) and areal extension of the bank are much larger than previously known.

Keywords

Coral Bank, Morphology, Multibeam Bathymetry, Western Continental Shelf of India.

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Ch. M. Rao ¹, P. S. Rao ¹, K. A. Kamesh Raju ¹

Affiliations
1 National Institute of Oceanography, Dona Paula, Goa - 403 004, IN

Abstract

No Abstract.

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