Evidence of Poor Bottom Water Ventilation during LGM in the Equatorial Indian Ocean
AffiliationUniv Arizona, NSF Arizona AMS Lab
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PublisherFRONTIERS MEDIA SA
CitationEvidence of Poor Bottom Water Ventilation during LGM in the Equatorial Indian Ocean 2017, 5 Frontiers in Earth Science
JournalFrontiers in Earth Science
Rights© 2017 Chandana, Bhushan and Jull. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY).
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AbstractMulti-proxy approach for the reconstruction of paleo-redox conditions is attempted on a radiocarbon (C-14) dated sediment core near the equatorial Indian Ocean. Based on the behavior and distribution of redox sensitive and productivity proxies, study demonstrates prevalence of anoxic bottom water conditions during LGM due to poorly ventilated bottom waters augmented by high surface productivity resulting in better preservation of organic carbon (OC). During early Holocene, the equatorial Indian Ocean witnessed high sedimentation rates resulting in high organic carbon (OC) with depleted redox sensitive elements thereby causing better preservation of OC. The study underscores poor bottom water ventilation during LGM and preservation of OC as a result of high sedimentation rate in early Holocene.
NoteOpen access journal.
VersionFinal published version
SponsorsMinistry of Earth Sciences, Govt. of India under GEOTRACES [MOES/36/OOIS.Siber07]