Larger foraminifera from a relict structure off Karwar western Indian continental margin

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dc.contributor.author Setty, M.G.A.P.
dc.date.accessioned 1999-08-28T10:01:06Z
dc.date.accessioned 2017-09-29T13:48:31Z
dc.date.available 1999-08-28T10:01:06Z
dc.date.available 2017-09-29T13:48:31Z
dc.date.issued 1984
dc.identifier.citation Proceedings of the Indian National Science Academy, vol.50A(2); 1984; 127-138
dc.identifier.issn 0370-0046
dc.identifier.uri http://drs.nio.org/drs/handle/2264/6439
dc.description.abstract Grab samples collected off Karwar from a depth of 77-201 m yielded several larger foraminifera from calcareous relict sediments. This sediment was characterised by opaline silica which was formed during the close of the Pleistocene or the beginning of the Holocene. The relict sands yielded fossilised larger foraminifera which invariably mixed with the recent fauna. Larger foraminifera were abundant numerically but they include some large-sized benthonics (e.g. @iElphidium indicum@@) and planktonics including @iGloboquadrina conglomerata, G. hexagona@@ and dextrally coiled @iNeogloboquadrina pachyderma typica@@ (reported earlier). The occurrence of some of the planktonics was suggestive of upwelling and their record in the sediment was indicative of such water masses having been present in the region. Among the larger forms, @iAmphistegina bicirculata, A. radiata@@ var. @ipapillosa@@ and @iOperculina ammonoides@@ indicate mixing, while @iNummulites cumingii@@ and @iBorelis schlumbergeri@@ were relict forms of Pleistocene time
dc.language en
dc.publisher Indian Academy of Sciences, Bangalore
dc.relation.ispartof P Indian Natl Sci Acad
dc.relation.isreferencedby NON-SCI
dc.subject Invertebrate Biology
dc.subject.other relict sediments
dc.subject.other silica
dc.subject.other pleistocene
dc.subject.other water masses
dc.subject.other Foraminifera
dc.subject.other ISW, India, Karnataka, Karwar
dc.title Larger foraminifera from a relict structure off Karwar western Indian continental margin
dc.type Journal Article
dc.affiliation.author CSIR-National Institute of Oceanography, Dona Paula, Goa, India


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