气候变化领域集成服务门户(CCPortal): Tropical ocean temperatures and changes in terrigenous flux during the Paleocene-Eocene Thermal Maximum in southern Tibet

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DOI	10.1016/j.gloplacha.2023.104289
	Tropical ocean temperatures and changes in terrigenous flux during the Paleocene-Eocene Thermal Maximum in southern Tibet
	Jin, Simin; Li, Guobiao; Li, Juan; Hu, Xiumian; Yang, Huan; Huang, Chunju; Baoke, Zhantu; Algeo, Thomas J.; Kemp, David B.
发表日期	2023
ISSN	0921-8181
EISSN	1872-6364
卷号	230
英文摘要	The Paleocene-Eocene Thermal Maximum (PETM,-56 Ma) was an extreme climate warming event of the early Cenozoic. The development and ecology of carbonate platforms are highly sensitive to changes in SSTs, sea level and terrestrial detrital input. However, no record of SST changes during the PETM has yet been reported from a shallow marine carbonate platform. Here, we reconstruct SSTs for two shallow marine carbonate PETM sections in present-day southern Tibet from the distribution of isoprenoid glycerol dialkyl glycerol tetraethers (isoGDGT). Our dataset demonstrates that the temperature of the tropical eastern Tethys likely increased 3 to 5 degrees C during the PETM (depending on the TEX86 calibration used), and it supports a reduction of 2 degrees C in the meridional gradient between middle and low latitudes. Elemental data and quartz content imply an increase in terrigenous flux prior to the onset of the CIE, possibly linked to initial PETM warming. However, inconsistent changes in terrigenous flux at other PETM sections in the eastern Tethys suggest a variable response modulated by sea-level change and hinterland weathering, erosion and sediment delivery.
关键词	PETM Carbonate platform Paleoclimate Sea level Carbon isotopes GDGT
英文关键词	SEA-SURFACE TEMPERATURE; CONTINENTAL-SHELF; LATEST PALEOCENE; STABLE-ISOTOPES; ORGANIC-MATTER; PACIFIC-OCEAN; ARCTIC-OCEAN; PROXY DATA; BASIN; EVOLUTION
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001119919400001
来源期刊	GLOBAL AND PLANETARY CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283143
作者单位	China University of Geosciences - Wuhan; China University of Geosciences - Wuhan; China University of Geosciences - Wuhan; China University of Geosciences - Beijing; Chinese Academy of Sciences; Nanjing University; China University of Geosciences - Wuhan; China University of Geosciences - Wuhan; University System of Ohio; University of Cincinnati; China University of Geosciences - Wuhan
推荐引用方式 GB/T 7714	Jin, Simin,Li, Guobiao,Li, Juan,et al. Tropical ocean temperatures and changes in terrigenous flux during the Paleocene-Eocene Thermal Maximum in southern Tibet[J],2023,230.
APA	Jin, Simin.,Li, Guobiao.,Li, Juan.,Hu, Xiumian.,Yang, Huan.,...&Kemp, David B..(2023).Tropical ocean temperatures and changes in terrigenous flux during the Paleocene-Eocene Thermal Maximum in southern Tibet.GLOBAL AND PLANETARY CHANGE,230.
MLA	Jin, Simin,et al."Tropical ocean temperatures and changes in terrigenous flux during the Paleocene-Eocene Thermal Maximum in southern Tibet".GLOBAL AND PLANETARY CHANGE 230(2023).