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dc.contributor.authorKumar, B.
dc.contributor.authorRajamanickam, G.V.
dc.contributor.authorGujar, A.R.
dc.date.accessioned2009-01-07T10:43:44Z
dc.date.available2009-01-07T10:43:44Z
dc.date.issued2001
dc.identifier.citationProceedings of the International Seminar on Quaternary Sea-Level Variation, Shoreline Displacement and Coastal Environment, Ed by: Rajamanickam, G.V.; Tooley, M.J. 167-170p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/1570
dc.description.abstractThe beach rock carbonates from the 200 km long stretch from Guhagar in the north to Deogad in the south along the Konkan coast (Maharashtra, India) are studied for sup(14)C dating and sup(13)C : sup(12)C and sup(18)O : sup(16)O ratio determination to understand their depositional processes and paleoenvironmental changes. sup(14)C ages of some of these rocks range from 1100 to 3130 Yrs B.P., suggesting their Recent to Sub Recent origin. delta sup(13)C signatures of beach rocks vary largely from -1.9 to -6.7% (PDB) and delta sup(18)O signatures lie in a narrow range of +27.5 to +28.6% (SMOW), respectively. Isotopic data obtained in this study show that cementation of beach rock carbonates might have taken place in a shallow vadose zone. The large variations delta sup(13)C signatures (-1.9 to -6.7%) can be attributed to changing influcnce of organically derived soil CO sub(2) in the formation of these carbonates. delta sup(18)O signatures of beach rock carbonates indicate the the paleotemperatures of waters precipitating these carbonates varied moderately.
dc.language.isoen
dc.publisherNew Academic Publishers, Delhi
dc.rightsCopyright [2001]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subjectcarbonate rocks
dc.subjectsedimentary environments
dc.subjectpalaeoenvironments
dc.subjectcarbon isotopes
dc.subjectoxygen isotopes
dc.subjectbeachrock
dc.subjectcementation
dc.subjectpalaeotemperature
dc.subjectradiocarbon dating
dc.titleIsotopic studies of beach rock carbonates from Konkan, central west coast of India
dc.typeConference Article


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