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Deterioration of Early Holocene coral reef due to sea level rise along west coast of India: Benthic foraminiferal testimony

DRS at CSIR-National Institute of Oceanography

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Title Deterioration of Early Holocene coral reef due to sea level rise along west coast of India: Benthic foraminiferal testimony
 
Creator Mazumder, A.
Nigam, R.
Henriques, P.J.
 
Subject foraminifera
indicator species
palaeoceanography
Amphistegina
Operculina
Alveolinella
 
Description A total of 103 surface sediment samples collected from the water depth range of 15-3300 m along Vijaydurg-Karwar stretch of central west coast of India were analyzed for foraminiferal content. Relict benthic foraminiferal assemblage was noted within 50-135 m water depth. The relict benthic foraminiferal assemblage that includes Amphistegina, Operculina and Alveolinella in sediment samples within the water depth of 85-135 m indicates presence of coral reef at this depth during Early Holocene. The presence of barnacle fouling on Relict foraminifera at 60-90 m confirms the paleo-shoreline. The shallow depth zone is characterized by presence of agglutinated relict foraminifera. The agglutinated forms indicate freshwater influx, which eventually increased the sea level and subsequently deteriorated the paleo-coral reef.
 
Date 2012-09-12T12:24:40Z
2012-09-12T12:24:40Z
2012
 
Type Journal Article
 
Identifier Geoscience Frontiers vol.3(5); 2012; 697-705
http://drs.nio.org/drs/handle/2264/4161
 
Language en
 
Rights © 2011, China University of Geosciences (Beijing) and Peking University. An edited version of this paper was published by Elsevier.
 
Publisher China University of Geosciences (Beijing)