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dc.contributor.authorGuptha, M.V.S.
dc.contributor.authorHashimi, N.H.
dc.date.accessioned1995-05-19T10:01:08Z
dc.date.accessioned2017-09-29T13:48:24Z
dc.date.available1995-05-19T10:01:08Z
dc.date.available2017-09-29T13:48:24Z
dc.date.issued1985
dc.identifier.citationIndian Journal of Marine Sciences, vol.14; 1985; 66-70
dc.identifier.issn0379-5136
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/6320
dc.description.abstractSediment core from the upper continental slope off Saurashtra Coast has been analysed for CaCO sub(3) and coarse fraction contents in addition to planktonic foraminifera and clay mineralogy. Based on CaCO sub(3) and planktonic foraminiferal data a boundary between glacial and interglacial is placed at 42 cm assuming the sedimentation rate as 4 cm 1000 y/1. Distribution of CaCO sub(3) clearly shows the sharp change in its abundance at the 42 cm boundary. Among planktonic foraminifera, Globigerinoides sacculifer and G. ruber are by far the most abundant. Variation in the planktonic foraminiferal fauna is not as sharp as CaCO sub(3), because of the insignificant change in the temperature during glacial and interglacial periods of late Pleistocene. Some species of Orbulina, viz. Orbulina bilobata and O. suturalis are encountered and believed to be reworked ones. Distribution of clay minerals such as kaolinite, illite and chlorite along with quartz shows and increasing trend towards the bottom of the core in the glacial period. This may reflect the fluctuation in the sediment discharge from the river Indus, whereas, in the interglacial period this is not encountered and may be attributed to the existence of dynamic barrier in Holocene
dc.languageen
dc.publisherCSIR-NISCAIR
dc.relation.ispartofIndian J Mar Sci
dc.relation.isreferencedbySCI
dc.subjectGeology and Geophysics
dc.subject.otherriver valleys
dc.subject.otherice ages
dc.subject.otherinterglacial periods
dc.subject.othercalcium carbonates
dc.subject.othercore analysis
dc.subject.othersediments
dc.subject.otherISW, Arabian Sea
dc.titleFluctuation in glacial and interglacial sediment discharge of the River Indus as seen in the core from the Arabian Sea
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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