Record Details

Palaeoclimatic significance of gypsum pseudomorphs in the inner shelf sediments off Machalipatnam bay

DRS at CSIR-National Institute of Oceanography

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Field Value
 
Title Palaeoclimatic significance of gypsum pseudomorphs in the inner shelf sediments off Machalipatnam bay
 
Creator Rao, V.P.
 
Subject Oceanography and Limnology
pleistocene
gypsum
calcite
continental shelves
shelf sedimentation
palaeoclimate
ISW, India, Andhra Pradesh, Machalipatnam Bay
 
Description Pseudo-gypsum crystals have been found in the coarse fraction of the sediments from the inner continental shelf off Machilipatnam Bay. They range in size from 3 to 7 mm are elongate and lenticular in shape. Bassanite and calcite are pseudomorphs after gypsum. The origin of the pseudo-gypsum has been discussed and it is suggested that these are indicators of late Pleistocene climatic aridity. The bay sediments deposited during late Pleistocene were subsequently eroded by waves and currents due to sea level changes and the coarse fraction of the sediments containing pseudogypsum were transported and deposited in the inner continental shelf
 
Date 1995-06-20T10:01:38Z
2017-09-30T01:29:49Z
1995-06-20T10:01:38Z
2017-09-30T01:29:49Z
1988
 
Type Journal Article
 
Identifier Journal of the Geological Society of India, vol.32; 1988; 426-429
0016-7622
http://drs.nio.org/drs/handle/2264/7072
 
Language en
 
Relation J Geol Soc India
SCI
 
Publisher Geological Society of India