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dc.contributor.authorAchyuthan, Hema
dc.contributor.authorBaker, V. R.
dc.date.accessioned2021-02-11T21:32:08Z
dc.date.available2021-02-11T21:32:08Z
dc.date.issued2002-01-01
dc.identifier.citationAchyuthan, H., & Baker, V. (2002). Coastal response to changes in sea level since the last 4500 BP on the east coast of Tamil Nadu, India. Radiocarbon, 44(1), 137-144.
dc.identifier.issn0033-8222
dc.identifier.doi10.1017/S0033822200064730
dc.identifier.urihttp://hdl.handle.net/10150/654468
dc.description.abstractGeomorphology, clay mineral composition, and radiocarbon dates from Muttukadu to Marakkanam estuaries and the tidal zone along the east coast of Tamil Nadu, India, have been used to reconstruct coastal evolution between approximately 4500 and 1100 BP. Formation of alternate oyster beds with intervening tidal clay units indicate fluctuation in the sea level may be a consequence of changes in the Mid-Holocene sedimentation pattern and coastal configuration. 14C dates from Muttukadu indicate a rapid relative sea-level rise (RSL) subsequent to 3500 BP and tidal flat sedimentation between 3475 and 3145 BP. Marine conditions along the east coast area returned around 1900 BP. Comparison of dates with other sites, e.g. Muttukadu, Mammallapuram, and Marakkanam, points toward short removal of marine conditions, ample sediment supplies in the tidal zones, and neotectonic activity. Reactivation of the north-south trending fault line occurred not earlier than approximately 1050 BP. Our study indicates that Middle to Late Holocene coastal sedimentation and the chronology of the tidal zone formation have been strongly influenced by local factors. These have provided considerable scope for internal reorganization with changing coastal processes.
dc.language.isoen
dc.publisherDepartment of Geosciences, The University of Arizona
dc.relation.urlhttp://radiocarbon.webhost.uits.arizona.edu/
dc.rightsCopyright © by the Arizona Board of Regents on behalf of the University of Arizona. All rights reserved.
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.subjectlandform evolution
dc.subjectshorelines
dc.subjectclay mineralogy
dc.subjectclay minerals
dc.subjectsheet silicates
dc.subjectTamil Nadu India
dc.subjectcoastal sedimentation
dc.subjectshore features
dc.subjectsea level changes
dc.subjectcores
dc.subjectsedimentation
dc.subjectForaminifera
dc.subjectProtista
dc.subjectreconstruction
dc.subjectHolocene
dc.subjectmicrofossils
dc.subjectbiostratigraphy
dc.subjectsilicates
dc.subjectsediments
dc.subjectAsia
dc.subjectIndia
dc.subjectCenozoic
dc.subjectQuaternary
dc.subjectIndian Peninsula
dc.subjectC 14
dc.subjectcarbon
dc.subjectdates
dc.subjectisotopes
dc.subjectradioactive isotopes
dc.subjectshells
dc.subjectInvertebrata
dc.subjectabsolute age
dc.titleCoastal Response to Changes in Sea Level since the Last 4500 BP on the East Coast of Tamil Nadu, India
dc.typeArticle
dc.typetext
dc.identifier.journalRadiocarbon
dc.description.collectioninformationThe Radiocarbon archives are made available by Radiocarbon and the University of Arizona Libraries. Contact lbry-journals@email.arizona.edu for further information.
dc.eprint.versionFinal published version
dc.description.admin-noteMigrated from OJS platform February 2021
dc.source.volume44
dc.source.issue1
dc.source.beginpage137
dc.source.endpage144
refterms.dateFOA2021-02-11T21:32:08Z


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