气候变化领域集成服务门户(CCPortal): Paleogene global cooling-induced temperature feedback on chemical weathering, as recorded in the northern Tibetan Plateau

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DOI	10.1130/G46422.1
	Paleogene global cooling-induced temperature feedback on chemical weathering, as recorded in the northern Tibetan Plateau
	Fang, Xiaomin; Galy, Albert; Yang, Yibo; Zhang, Weilin; Ye, Chengcheng; Song, Chunhui
通讯作者	Fang, XM (通讯作者)
发表日期	2019
ISSN	0091-7613
EISSN	1943-2682
起始页码	992
结束页码	996
卷号	47 期号:10
英文摘要	Plate-tectonic processes have long been thought to be the major cause of the Cenozoic global carbon cycle, and global cooling by uplift of the Tibetan Plateau through enhancing silicate weathering and organic carbon burial and/or by weathering of obducted ophiolites during the closure of the Neo-Tethys Ocean. However, the imbalance resulting from accelerated CO2 consumption and a relatively stable CO2 input from volcanic degassing during the Cenozoic should have depleted atmospheric CO2 within a few million years; therefore, a negative feedback mechanism must have stabilized the carbon cycle. Here, we present the first almost-complete Paleogene silicate weathering intensity (SWI) records from continental rocks in the northern Tibetan Plateau showing that silicate weathering in this tectonically inactive area was modulated by global temperature. These findings suggest that Paleogene global cooling was also strongly influenced by a temperature feedback mechanism, which regulated silicate weathering rates and hydrological cycles and maintained a nearly stable carbon cycle. It acted as a negative feedback by decreasing CO2 consumption resulting from the lower SWI and the kinetic limitations in tectonically inactive areas.
关键词	CARBON-CYCLE ATMOSPHERIC CO2 PRIMARY DRIVER TARIM BASIN EVOLUTION CLIMATE UPLIFT RETREAT RISE
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:000487674000027
来源期刊	GEOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259543
推荐引用方式 GB/T 7714	Fang, Xiaomin,Galy, Albert,Yang, Yibo,et al. Paleogene global cooling-induced temperature feedback on chemical weathering, as recorded in the northern Tibetan Plateau[J]. 中国科学院青藏高原研究所,2019,47(10).
APA	Fang, Xiaomin,Galy, Albert,Yang, Yibo,Zhang, Weilin,Ye, Chengcheng,&Song, Chunhui.(2019).Paleogene global cooling-induced temperature feedback on chemical weathering, as recorded in the northern Tibetan Plateau.GEOLOGY,47(10).
MLA	Fang, Xiaomin,et al."Paleogene global cooling-induced temperature feedback on chemical weathering, as recorded in the northern Tibetan Plateau".GEOLOGY 47.10(2019).