气候变化领域集成服务门户(CCPortal): High-precision U-Pb age constraints on the Permian floral turnovers, paleoclimate change, and tectonics of the North China block

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DOI	10.1130/G48051.1
	High-precision U-Pb age constraints on the Permian floral turnovers, paleoclimate change, and tectonics of the North China block
	Wu, Qiong; Ramezani, Jahandar; Zhang, Hua; Wang, Jun; Zeng, Fangui; Zhang, Yichun; Liu, Feng; Chen, Jun; Cai, Yaofeng; Hou, Zhangshuai; Liu, Chao; Yang, Wan; Henderson, Charles M.; Shen, Shu-zhong
通讯作者	Shen, SZ (通讯作者)
发表日期	2021
ISSN	0091-7613
EISSN	1943-2682
起始页码	677
结束页码	681
卷号	49 期号:6
英文摘要	The Permian marine-terrestrial system of the North China block provides an exceptional window into the evolution of northern temperate ecosystems during the critical transition from icehouse to greenhouse following the late Paleozoic ice age (LPIA). Despite many studies on its rich hydrocarbon reserves and climate-sensitive fossil flora, uncertain temporal constraints and correlations have hampered a thorough understanding of the records of geologic, biologic, and climatic change from the North China block. We present a new chronostratigraphy based on high-precision U-Pb chemical abrasion-isotope dilution-thermal ionization mass spectrometry (CA-ID-TIMS) geochronology of tuffs from a near-complete latest Carboniferous-Permian succession in North China. The results indicate that the predominance of continental red beds, climate aridification, and the disappearance of coals and characteristic tropical flora were well under way during the Cisuralian (Early Permian) in the North China block, significantly earlier than previously thought. A nearly 20 m.y. hiatus spanning the early Kungurian to the mid-Guadalupian (or later) is revealed in the northern North China block to have close temporal and spatial associations with the closure and/or subduction of the Paleo-Asian Ocean and its related tectonic convergence. This long hiatus was concomitant with the prominent loss of the highly diverse and abundant Cathaysian floras and the widespread invasion of the monotonous Angaran floras under arid climate conditions in the North China block. Similarities in the floral and climate shift histories between Euramerica and North China suggest that aside from the regional tectonic controls and continental movement, extensive volcanism during the Cisuralian may have played a major role in the global warming and aridification in the aftermath of the LPIA.
关键词	LARGE IGNEOUS PROVINCE ORDOS BASIN INDICATORS EVOLUTION PATTERNS SECTION MARGIN BAODE
语种	英语
WOS研究方向	Geology
WOS类目	Geology
WOS记录号	WOS:000663714600008
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/260503
推荐引用方式 GB/T 7714	Wu, Qiong,Ramezani, Jahandar,Zhang, Hua,et al. High-precision U-Pb age constraints on the Permian floral turnovers, paleoclimate change, and tectonics of the North China block[J]. 中国科学院青藏高原研究所,2021,49(6).
APA	Wu, Qiong.,Ramezani, Jahandar.,Zhang, Hua.,Wang, Jun.,Zeng, Fangui.,...&Shen, Shu-zhong.(2021).High-precision U-Pb age constraints on the Permian floral turnovers, paleoclimate change, and tectonics of the North China block.GEOLOGY,49(6).
MLA	Wu, Qiong,et al."High-precision U-Pb age constraints on the Permian floral turnovers, paleoclimate change, and tectonics of the North China block".GEOLOGY 49.6(2021).