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

Abhijit Mazumder | Zendy; R. Nigam | Zendy; P.J. Henriques | Zendy

Open Access

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

Author(s) -

Abhijit Mazumder,

R. Nigam,

P.J. Henriques

Publication year - 2012

Publication title -

geoscience frontiers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.842

H-Index - 57

eISSN - 2588-9192

pISSN - 1674-9871

DOI - 10.1016/j.gsf.2011.11.016

Subject(s) - foraminifera , benthic zone , geology , oceanography , reef , coral , holocene , coral reef , sediment , range (aeronautics) , paleontology , materials science , composite material

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

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