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Paleocene-Eocene warming and biotic response in the epicontinental West Siberian Sea
被引:63
|作者:
Frieling, Joost
[1
]
Iakovleva, Alina I.
[2
]
Reichart, Gert-Jan
[3
,4
]
Aleksandrova, Galina N.
[2
]
Gnibidenko, Zinaida N.
[5
]
Schouten, Stefan
[3
,4
]
Sluijs, Appy
[1
]
机构:
[1] Univ Utrecht, Fac Geosci, Dept Earth Sci, Lab Palynol & Paleobot, NL-3584 CD Utrecht, Netherlands
[2] Russian Acad Sci, Inst Geol, Moscow 109017, Russia
[3] NIOZ Royal Netherlands Inst Sea Res, NL-1790 AB Den Burg, Texel, Netherlands
[4] Univ Utrecht, Fac Geosci, Dept Earth Sci, NL-3584 CD Utrecht, Netherlands
[5] Russian Acad Sci, Siberian Branch, Inst Petr Geol & Geophys, Novosibirsk 630090, Russia
来源:
基金:
欧洲研究理事会;
关键词:
CLIMATE;
REGION;
LIPIDS;
LEVEL;
D O I:
10.1130/G35724.1
中图分类号:
P5 [地质学];
学科分类号:
0709 ;
081803 ;
摘要:
We present a Paleocene-Eocene (ca. 60-52 Ma) sea-surface temperature record from sediments deposited in the epicontinental West Siberian Sea. TEX86 paleothermometry indicates long-term late Paleocene (similar to 17 degrees C ca. 59 Ma) to early Eocene (26 degrees C at 52 Ma) sea-surface warming, consistent with trends previously observed for the Southern Ocean and deep oceans. Photic zone and seafloor anoxia developed as temperatures rose by 7 degrees C to similar to 27 degrees C during the Paleocene-Eocene Thermal Maximum (PETM). Based on paired palynological and TEX86 data, we suggest that the minimum temperature for the proliferation of Paleocene and early Eocene members of the dinoflagellate family Wetzelielloideae, which includes the PETM marker taxon Apectodinium, was similar to 20 degrees C.
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页码:767 / 770
页数:4
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