Record Details

Exploration of the continental margins of India

DRS at CSIR-National Institute of Oceanography

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Title Exploration of the continental margins of India
 
Creator Siddiquie, H.N.
Hashimi, N.H.
Vora, K.H.
Pathak, M.C.
 
Subject Geology and Geophysics
sediment chemistry
gravity surveys
magnetic exploration
seismic exploration
sonar
bathymetric surveys
wastes
waste disposal
marine environment
research programmes
underwater exploration
continental margins
geological surveys
geophysical surveys
ISW, Indian Ocean
 
Description In mid 1970's the National Institute of Oceanography, Goa, India prepared a plan for systematic regional, geological and geophysical surveys of the continental margins of India. This involved over 75,000 km of underway (bathymetric, side scan sonar, magnetic, gravity and seismic) surveys on tracks about 20 km apart, and collection of about 1500 seabed samples at about 10 to 20 km spacing. It was anticipated that the entire programme would require 22 ship's months. This programme received considerable impetus from sponsored surveys of other organizations, chiefly the oil industry, ports and harbours as well as industries disposing of their effluents in the marine environment. By now the entire western continental shelf and a large part of the continental slope have been covered by about 68,314 km bathymetric surveys, 12,720 km side scan sonar surveys 46,222 km magnetic surveys, 27,200 km seismic surveys (including 5, 489 km multichannel seismic), and 9,065km gravity surveys. Approximately 1500 seabed samples have been collected. These surveys, besides providing basic information on the morphology, sediments, and geochemistry of the sediments of the western continental margin of India, have also led to the estimation of resources of offshore ilmenite placers and low grade phosphorite deposits. The data collected are proposed to be depicted in a series of maps showing the morphology, sediments and geochemistry of sediments.
 
Date 1995-06-16T10:01:31Z
2017-09-29T13:48:09Z
1995-06-16T10:01:31Z
2017-09-29T13:48:09Z
1987
 
Type Journal Article
 
Identifier International Hydrographic Review, vol.64(1); 1987; 91-110
0020-6946
http://drs.nio.org/drs/handle/2264/6037
 
Language en
 
Relation Int Hydrogr Rev
NON-SCI
 
Publisher International Hydrographic Bureau