干旱区生态环境知识资源中心(Arid): Paleocene-Eocene Thermal Maximum lacustrine sediments in deep drill core SKD1 in the Jianghan Basin: A record of enhanced precipitation in central China

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DOI	10.1016/j.gloplacha.2021.103620
	Paleocene-Eocene Thermal Maximum lacustrine sediments in deep drill core SKD1 in the Jianghan Basin: A record of enhanced precipitation in central China
	Teng, Xiaohua; Wang, Chunlian; Liu, Chenglin; Yan, Kai; Luo, Zeng
通讯作者	Wang, CL (corresponding author), Chinese Acad Geol Sci, Inst Mineral Resources, MNR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China. ; Teng, XH (corresponding author), Zaozhuang Univ, Zaozhuang City 277160, Shandong, Peoples R China.
来源期刊	GLOBAL AND PLANETARY CHANGE
ISSN	0921-8181
EISSN	1872-6364
出版年	2021
卷号	205
英文摘要	Global warming has a significant effect on global and regional hydrological cycles and is expected to exacerbate the uneven distribution of rainfall in various regions, thereby influencing water-related human activities (e.g., agriculture) and the development of human society, especially in densely populated East Asia. As an analog to predict the future impact of global warming on hydrological regimes, the Paleocene-Eocene Thermal Maximum (PETM) at similar to 56 Ma is the most prominent and extensively studied Paleogene hyperthermal event, and it featured rapid and extreme global warming that caused intense environmental effects. However, the contradictory ef-fects/mode of precipitation during the PETM has constrained our understanding of the hydrological response to global warming. Moreover, compared with marine records, continental sedimentary records of the PETM are very limited, and most are typically limited to weathered, often discontinuous, outcrop exposures, and relevant records of environmental perturbations in Asia are lacking. This study presents the first detailed record of the PETM in the Jianghan Basin, central China, and identifies the environmental and hydrological changes across the PETM. Based on high-resolution carbon and oxygen isotopes in the lacustrine carbonates (mainly calcite and dolomite) in the deep drill core SKD1, we identified the PETM event at the boundary of the Shashi and Xingouzui Formations. The carbon isotopic values of carbonate (delta C-13(carb)) and calcite (delta C-13(calcite)) show large negative ex-cursions (-10.7 parts per thousand and 8.7 parts per thousand, respectively) during the PETM. The oxygen isotopic values of carbonate (delta O-18(carb)) and calcite (delta O-18(calcite)) also show large negative excursions (7.9 parts per thousand and 6.1%o, respectively), indicating increased precipitation and a wetter climate across the PETM, as evidenced by the disappearance of evaporites and the dominance of calcite in the carbonates. Increased precipitation with elevated pCO(2) concentration might have caused the anomalous large negative excursion of the delta C-13(carb) values in the SKD1 core and provided favorable living conditions for the oldest known primate, whose fossil was found in the Jianghan Basin. The delta O-18(carb) and delta O-18(calcite) values increase and show high-frequency and large-amplitude fluctuations above the PETM interval, indicating rapid shifts between wet and dry climatic conditions in an overall arid climate after the PETM.
英文关键词	Hyperthermal event Paleocene-Eocene Thermal Maximum Carbon isotope excursion Precipitation Lacustrine sediments
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000692586100002
WOS关键词	CARBON-ISOTOPE EXCURSION ; STABLE-ISOTOPE ; BIGHORN BASIN ; SEA-LEVEL ; CLIMATE ; GEOCHEMISTRY ; PALEOCLIMATE ; TEMPERATURE ; BOUNDARY ; RELEASE
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS研究方向	Physical Geography ; Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368420
作者单位	[Teng, Xiaohua] Zaozhuang Univ, Dept Tourism Resources & Environm, Zaozhuang 277160, Peoples R China; [Wang, Chunlian; Liu, Chenglin; Yan, Kai] Chinese Acad Geol Sci, Inst Mineral Resources, MNR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China; [Luo, Zeng] Hunan Univ Arts & Sci, Coll Geog & Tourism, Changde 415000, Peoples R China
推荐引用方式 GB/T 7714	Teng, Xiaohua,Wang, Chunlian,Liu, Chenglin,et al. Paleocene-Eocene Thermal Maximum lacustrine sediments in deep drill core SKD1 in the Jianghan Basin: A record of enhanced precipitation in central China[J],2021,205.
APA	Teng, Xiaohua,Wang, Chunlian,Liu, Chenglin,Yan, Kai,&Luo, Zeng.(2021).Paleocene-Eocene Thermal Maximum lacustrine sediments in deep drill core SKD1 in the Jianghan Basin: A record of enhanced precipitation in central China.GLOBAL AND PLANETARY CHANGE,205.
MLA	Teng, Xiaohua,et al."Paleocene-Eocene Thermal Maximum lacustrine sediments in deep drill core SKD1 in the Jianghan Basin: A record of enhanced precipitation in central China".GLOBAL AND PLANETARY CHANGE 205(2021).