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AuthorNeelavannan, Kannaiyan
AuthorHussain, Shaik Mohammad
AuthorSangode, Satish J.
AuthorPrakasam, Muthusamy
AuthorSen, Indra Sekhar
AuthorVeerasingam, Subramanian
AuthorTyagi, Abhishek
AuthorKumar, Pankaj
AuthorSingh, Pramod
Available date2022-02-20T06:35:16Z
Publication Date2022-04-01
Publication NameJournal of Asian Earth Sciences
Identifierhttp://dx.doi.org/10.1016/j.jseaes.2022.105086
CitationKannaiyan Neelavannan, Shaik Mohammad Hussain, Satish J. Sangode, Muthusamy Prakasam, Indra Sekhar Sen, Subramanian Veerasingam, Abhishek Tyagi, Pankaj Kumar, Pramod Singh, A 51 ka sedimentary sequence in a seamount basin, Eastern Arabian Sea: Records for paleoceanographic and paleoclimate conditions, Journal of Asian Earth Sciences, Volume 226, 2022, 105086, ISSN 1367-9120, https://doi.org/10.1016/j.jseaes.2022.105086
ISSN13679120
Identifier105086
URIhttps://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85122536884&origin=inward
URIhttp://hdl.handle.net/10576/27287
AbstractA 5.4 m thick sediment core at ∼ 517 m water depth from a seamount basin off the Goa coast in the Eastern Arabian Sea (EAS) is examined for the mineral magnetic, carbonate and organic carbon variability. The 51 ka BP dated record is represented by Marine Isotope Stages (MIS) 3 to 1 under varying rates of sedimentation from 1.9 to 5.2 cm/ka. Comparison with records from adjacent cores for OC, TN, and CaCO3, this study indicates strong coupling of the seamount basin sedimentation with paleo-oceanographic conditions governed by southwest (SW) monsoon. The mineral magnetic parameters assigned three zones of variable paleo-oceanographic-paleoclimatic conditions marked by the interplay of high coercivity (oxidative) and low coercivity (reducing) mineralogy, that can be attributed to various factors including ocean ventilation governed by bottom water inflow of oxygen-depleted Sub-Antarctic Mode Waters and Antarctic Intermediate Water flows (SAMW-AAIW). This study emphasizes the significance of seamount basins as faithful recorders of long-term thermocline changes along with strong coupling to paleoceanographic conditions.
SponsorThe author K.N is grateful to the Department of Science and Tech- nology, Promotion of University Research and Scientific Excellence (DST-PURSE), for providing Junior Research Fellowship (JRF), File No. C.5/JRF-PURSE Phase II/ Geology /2014/655/ DT: 15.12.2014.
Languageen
PublisherElsevier
SubjectEastern Arabian Sea
Marine Isotope Stage
Off Goa
Paleoceanographic
Seamount basin
TitleA 51 ka sedimentary sequence in a seamount basin, Eastern Arabian Sea: Records for paleoceanographic and paleoclimate conditions
TypeArticle
Volume Number226
dc.accessType Abstract Only


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