A 51 ka sedimentary sequence in a seamount basin, Eastern Arabian Sea: Records for paleoceanographic and paleoclimate conditions

Kannaiyan Neelavannan; Shaik Mohammad Hussain; Satish J. Sangode; Muthusamy Prakasam; Indra Sekhar Sen; Subramanian Veerasingam; Abhishek Tyagi; Pankaj Kumar; Pramod Singh

doi:10.1016/j.jseaes.2022.105086

A 51 ka sedimentary sequence in a seamount basin, Eastern Arabian Sea: Records for paleoceanographic and paleoclimate conditions

Kannaiyan Neelavannan^*, Shaik Mohammad Hussain, Satish J. Sangode, Muthusamy Prakasam, Indra Sekhar Sen, Subramanian Veerasingam, Abhishek Tyagi, Pankaj Kumar, Pramod Singh

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

A 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.

Original language	English
Article number	105086
Journal	Journal of Asian Earth Sciences
Volume	226
DOIs	https://doi.org/10.1016/j.jseaes.2022.105086
State	Published - 1 Apr 2022

Bibliographical note

Funding Information:
K.N acknowledges the postdoctoral research support at Indian Institute of Technology Kanpur. The authors are grateful to the Director, National Center for Polar and Ocean Research (NCPOR), Goa, India, for providing a chance to join in the oceanographic cruise to collect the sediment core samples. Authors are grateful to the Director, IUAC for extending the 14C AMS facility funded by Ministry of Earth Science (MoES), Govt. of India with reference number MoES/16/07/11(i)-RDEAS and MoES/P.O.(Seismic)8(09)- Geochron/2012. The authors are grateful to Dr. Nagender Nath B, Chief Scientist (Retired), NIO, Goa, for providing suggestions on sample collection and Dr. Rahul Mohan, Scientist E, Ms. Kalpana Dhiman, NCPOR, India, for extending Coulometer analysis and Dr. G. N. Nayak, Professor, Dr. Shabnam Choudhary, Department of Marine Science, Goa University, for extending phosphorus analysis. SJS acknowledges Head Department of Geology, Savitribai Phule University for extending the laboratory facilities under the collaboration. The author K.N is grateful to the Department of Science and Technology, 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.

Funding Information:
K.N acknowledges the postdoctoral research support at Indian Institute of Technology Kanpur. The authors are grateful to the Director, National Center for Polar and Ocean Research (NCPOR), Goa, India, for providing a chance to join in the oceanographic cruise to collect the sediment core samples. Authors are grateful to the Director, IUAC for extending the 14 C AMS facility funded by Ministry of Earth Science (MoES), Govt. of India with reference number MoES/16/07/11(i)-RDEAS and MoES/P.O.(Seismic)8(09)- Geochron/2012. The authors are grateful to Dr. Nagender Nath B, Chief Scientist (Retired), NIO, Goa, for providing suggestions on sample collection and Dr. Rahul Mohan, Scientist E, Ms. Kalpana Dhiman, NCPOR, India, for extending Coulometer analysis and Dr. G. N. Nayak, Professor, Dr. Shabnam Choudhary, Department of Marine Science, Goa University, for extending phosphorus analysis. SJS acknowledges Head Department of Geology, Savitribai Phule University for extending the laboratory facilities under the collaboration.

Funding Information:
The author K.N is grateful to the Department of Science and Technology, 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.

Publisher Copyright:
© 2022 Elsevier Ltd

Keywords

Eastern Arabian Sea
Marine Isotope Stage
Off Goa
Paleoceanographic
Seamount basin

ASJC Scopus subject areas

Geology
Earth-Surface Processes

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10.1016/j.jseaes.2022.105086

Cite this

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title = "A 51 ka sedimentary sequence in a seamount basin, Eastern Arabian Sea: Records for paleoceanographic and paleoclimate conditions",

abstract = "A 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.",

keywords = "Eastern Arabian Sea, Marine Isotope Stage, Off Goa, Paleoceanographic, Seamount basin",

author = "Kannaiyan Neelavannan and Hussain, \{Shaik Mohammad\} and Sangode, \{Satish J.\} and Muthusamy Prakasam and Sen, \{Indra Sekhar\} and Subramanian Veerasingam and Abhishek Tyagi and Pankaj Kumar and Pramod Singh",

note = "Funding Information: K.N acknowledges the postdoctoral research support at Indian Institute of Technology Kanpur. The authors are grateful to the Director, National Center for Polar and Ocean Research (NCPOR), Goa, India, for providing a chance to join in the oceanographic cruise to collect the sediment core samples. Authors are grateful to the Director, IUAC for extending the 14C AMS facility funded by Ministry of Earth Science (MoES), Govt. of India with reference number MoES/16/07/11(i)-RDEAS and MoES/P.O.(Seismic)8(09)- Geochron/2012. The authors are grateful to Dr. Nagender Nath B, Chief Scientist (Retired), NIO, Goa, for providing suggestions on sample collection and Dr. Rahul Mohan, Scientist E, Ms. Kalpana Dhiman, NCPOR, India, for extending Coulometer analysis and Dr. G. N. Nayak, Professor, Dr. Shabnam Choudhary, Department of Marine Science, Goa University, for extending phosphorus analysis. SJS acknowledges Head Department of Geology, Savitribai Phule University for extending the laboratory facilities under the collaboration. The author K.N is grateful to the Department of Science and Technology, 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. Funding Information: K.N acknowledges the postdoctoral research support at Indian Institute of Technology Kanpur. The authors are grateful to the Director, National Center for Polar and Ocean Research (NCPOR), Goa, India, for providing a chance to join in the oceanographic cruise to collect the sediment core samples. Authors are grateful to the Director, IUAC for extending the 14 C AMS facility funded by Ministry of Earth Science (MoES), Govt. of India with reference number MoES/16/07/11(i)-RDEAS and MoES/P.O.(Seismic)8(09)- Geochron/2012. The authors are grateful to Dr. Nagender Nath B, Chief Scientist (Retired), NIO, Goa, for providing suggestions on sample collection and Dr. Rahul Mohan, Scientist E, Ms. Kalpana Dhiman, NCPOR, India, for extending Coulometer analysis and Dr. G. N. Nayak, Professor, Dr. Shabnam Choudhary, Department of Marine Science, Goa University, for extending phosphorus analysis. SJS acknowledges Head Department of Geology, Savitribai Phule University for extending the laboratory facilities under the collaboration. Funding Information: The author K.N is grateful to the Department of Science and Technology, 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. Publisher Copyright: {\textcopyright} 2022 Elsevier Ltd",

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doi = "10.1016/j.jseaes.2022.105086",

language = "English",

volume = "226",

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T1 - A 51 ka sedimentary sequence in a seamount basin, Eastern Arabian Sea

T2 - Records for paleoceanographic and paleoclimate conditions

AU - Neelavannan, Kannaiyan

AU - Hussain, Shaik Mohammad

AU - Sangode, Satish J.

AU - Prakasam, Muthusamy

AU - Sen, Indra Sekhar

AU - Veerasingam, Subramanian

AU - Tyagi, Abhishek

AU - Kumar, Pankaj

AU - Singh, Pramod

N1 - Funding Information: K.N acknowledges the postdoctoral research support at Indian Institute of Technology Kanpur. The authors are grateful to the Director, National Center for Polar and Ocean Research (NCPOR), Goa, India, for providing a chance to join in the oceanographic cruise to collect the sediment core samples. Authors are grateful to the Director, IUAC for extending the 14C AMS facility funded by Ministry of Earth Science (MoES), Govt. of India with reference number MoES/16/07/11(i)-RDEAS and MoES/P.O.(Seismic)8(09)- Geochron/2012. The authors are grateful to Dr. Nagender Nath B, Chief Scientist (Retired), NIO, Goa, for providing suggestions on sample collection and Dr. Rahul Mohan, Scientist E, Ms. Kalpana Dhiman, NCPOR, India, for extending Coulometer analysis and Dr. G. N. Nayak, Professor, Dr. Shabnam Choudhary, Department of Marine Science, Goa University, for extending phosphorus analysis. SJS acknowledges Head Department of Geology, Savitribai Phule University for extending the laboratory facilities under the collaboration. The author K.N is grateful to the Department of Science and Technology, 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. Funding Information: K.N acknowledges the postdoctoral research support at Indian Institute of Technology Kanpur. The authors are grateful to the Director, National Center for Polar and Ocean Research (NCPOR), Goa, India, for providing a chance to join in the oceanographic cruise to collect the sediment core samples. Authors are grateful to the Director, IUAC for extending the 14 C AMS facility funded by Ministry of Earth Science (MoES), Govt. of India with reference number MoES/16/07/11(i)-RDEAS and MoES/P.O.(Seismic)8(09)- Geochron/2012. The authors are grateful to Dr. Nagender Nath B, Chief Scientist (Retired), NIO, Goa, for providing suggestions on sample collection and Dr. Rahul Mohan, Scientist E, Ms. Kalpana Dhiman, NCPOR, India, for extending Coulometer analysis and Dr. G. N. Nayak, Professor, Dr. Shabnam Choudhary, Department of Marine Science, Goa University, for extending phosphorus analysis. SJS acknowledges Head Department of Geology, Savitribai Phule University for extending the laboratory facilities under the collaboration. Funding Information: The author K.N is grateful to the Department of Science and Technology, 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. Publisher Copyright: © 2022 Elsevier Ltd

PY - 2022/4/1

Y1 - 2022/4/1

N2 - A 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.

AB - A 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.

KW - Eastern Arabian Sea

KW - Marine Isotope Stage

KW - Off Goa

KW - Paleoceanographic

KW - Seamount basin

UR - https://www.scopus.com/pages/publications/85122536884

U2 - 10.1016/j.jseaes.2022.105086

DO - 10.1016/j.jseaes.2022.105086

M3 - Article

AN - SCOPUS:85122536884

SN - 1367-9120

VL - 226

JO - Journal of Asian Earth Sciences

JF - Journal of Asian Earth Sciences

M1 - 105086

ER -

A 51 ka sedimentary sequence in a seamount basin, Eastern Arabian Sea: Records for paleoceanographic and paleoclimate conditions

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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