First Record of Oceanic Anoxic Event 1d at Southern High Latitudes: Sedimentary and Geochemical Evidence From International Ocean Discovery Program Expedition 369 SCIE SCOPUS

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Title
First Record of Oceanic Anoxic Event 1d at Southern High Latitudes: Sedimentary and Geochemical Evidence From International Ocean Discovery Program Expedition 369
Author(s)
Fan, Qingchao; Xu, Zhaokai; MacLeod, Kenneth G.; Brumsack, Hans‐Jürgen; Li, Tiegang; Chang, Fengming; Wan, Shiming; Riquier, Laurent; Fu, Delong; Luan, Zhendong; Duan, Baichuan; Chen, Hongjin; Wang, Wei; Lim, Dhong Il
KIOST Author(s)
Lim, Dhong Il(임동일)
Alternative Author(s)
임동일
Publication Year
2022-05
Abstract
Oceanic anoxic event 1d (OAE 1d) has been well studied at northern low latitudes (i.e., in Tethys and the North Atlantic); however, the paleoenvironmental response to this event at high latitudes has not been documented and the triggering mechanism remains unknown. Here, we address both of these shortcomings by presenting the first detailed sedimentary and multi-proxy geochemical record of the OAE 1d at southern high latitudes (60–62°S), obtained from sediments using Site U1513, IODP Expedition 369. Biostratigraphic and chemostratigraphic data support correlation of the interval studied with OAE 1d, and the sedimentary mercury proxy reveals that at least at Site U1513, OAE 1d is associated with the Central Kerguelen large igneous province volcanism. Furthermore, the significant increase in continental runoff and consequent terrigenous input from southwestern Australia in the southeastern proto-India Ocean might have resulted in regionally weakened bottom-water oxygenation and strengthened organic matter burial during OAE 1d.
ISSN
0094-8276
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/42476
DOI
10.1029/2021gl097641
Bibliographic Citation
Geophysical Research Letters, v.49, no.10, 2022
Publisher
American Geophysical Union
Keywords
International Ocean Discovery Program; oceanic anoxic event 1d; paleoenvironmental changes; southern high latitudes; volcanism
Type
Article
Language
English
Document Type
Article
Publisher
American Geophysical Union
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