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Clay sediment accumulation rates on the monsoon-dominated western continental shelf and slope region of India

DRS at CSIR-National Institute of Oceanography

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Title Clay sediment accumulation rates on the monsoon-dominated western continental shelf and slope region of India
 
Creator Borole, D.V.
 
Subject Geology and Geophysics
continental slope
continental shelves
monsoons
clays
sediments
ISW, India, West Coast
 
Description Clay accumulation rates shown in sediment cores from the nearshore to outer continental shelf and slope regions in water depths of 10-1246 m on the western continental margins of India were determined by the 210Pb dating technique. The 210Pb excess concentration encountered in these regions is about 3-5 dpm/g independent of water depth. The range of clay accumulation rates is from 1.8 to 19 mm/yr for the shelf region and decreases southward from the Tapti and Narbada river confluence in the Gulf of Cambay. This pattern indicates sediment dispersal in the coastal region regulated by southwest monsoon-dominated littoral currents. The same trend is encountered all along the southwestern traverse. This suggests that suspended matter transport across the shelf is minimal since clay accumulation rates on the outer shelf are only 1.8-2.5 mm/yr. The clay accumulation rate in the slope region is 3.8 mm/yr. The high accumulation rates encountered on the upper continental slope may be attributed to the terrigenous influx of Indus river sediment
 
Date 1995-06-17T10:01:36Z
2017-09-30T01:29:44Z
1995-06-17T10:01:36Z
2017-09-30T01:29:44Z
1988
 
Type Journal Article
 
Identifier Marine Geology, vol.82; 1988; 285-291
0025-3227
http://drs.nio.org/drs/handle/2264/6987
 
Language en
 
Relation Mar Geol
SCI
 
Publisher Elsevier