First Record of Oceanic Anoxic Event 1d at Southern High Latitudes: Sedimentary and Geochemical Evidence From International Ocean Discovery Program Expedition 369
نویسندگان
چکیده
Oceanic anoxic event 1d (OAE 1d) has been well studied at northern low latitudes (i.e., in Tethys and the North Atlantic); however, paleoenvironmental response to this high not documented triggering mechanism remains unknown. Here, we address both of these shortcomings by presenting first detailed sedimentary multi-proxy geochemical record OAE southern (60–62°S), obtained from sediments using Site U1513, IODP Expedition 369. Biostratigraphic chemostratigraphic data support correlation interval with 1d, mercury proxy reveals that least is associated Central Kerguelen large igneous province volcanism. Furthermore, significant increase continental runoff consequent terrigenous input southwestern Australia southeastern proto-India Ocean might have resulted regionally weakened bottom-water oxygenation strengthened organic matter burial during 1d.
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ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2022
ISSN: ['1944-8007', '0094-8276']
DOI: https://doi.org/10.1029/2021gl097641