Sequence stratigraphy, paleoclimate patterns, and vertebrate fossil preservation in Jurassic-Cretaceous strata of the Junggar Basin, Xinjiang Autonomous Region, People's Republic of China

doi:10.1139/e01-067

	Sequence stratigraphy, paleoclimate patterns, and vertebrate fossil preservation in Jurassic-Cretaceous strata of the Junggar Basin, Xinjiang Autonomous Region, People's Republic of China
	Eberth, DA ; Brinkman, DB ; Chen, PJ ; Yuan, FT ; Wu, SZ ; Li, G ; Cheng, XS
刊名	CANADIAN JOURNAL OF EARTH SCIENCES
	2001-12-01
卷号	38 期号:12 页码:1627-1644
ISSN号	0008-4077
DOI	10.1139/e01-067
英文摘要	Multi-kilometre-thick Jurassic-Cretaceous-age sedimentary successions exposed in the southern, northwestern, and northeastern regions of the Junggar Basin display a consistent and correlative stratigraphy comprising four, stacked second-order megasequences: Badaowan, Sangonghe, Shishugou, and Kalaza. Each consists of a basal erosional unconformity or discontinuity surface and lower, middle, and upper units that are interpreted as forestepping, backstepping, and aggradational systems tracts, respectively. Each megasequence is interpreted as recording an upsection shift from active tectonism and uplift to tectonic quiescence with associated changes in crustal response and sediment supply. Basin-wide analysis of megasequences indicates that tectonism was intermittent and regionally variable. A maximum phase of subsidence and sediment accommodation is recorded in the middle unit of each megasequence and correlates with a notable abundance of fossil vertebrates suggesting a primary tectonic and basin-response control on fossil preservation. Seasonally dry climatic conditions were developed first in the northeastern region of the basin during the Pliensbachian, followed by basin-wide seasonal dryness during the Bajocian. Seasonally dry climatic conditions were permanently established across the basin by the Oxfordian and intensified during the Early Cretaceous. A seasonally dry climate from Oxfordian through the Early Cretaceous correlates positively with the widespread presence of fossil vertebrates and suggests an additional climatic control on fossil preservation.
WOS关键词	OF-CHINA ; SEDIMENTOLOGY ; EVOLUTION ; DINOSAUR ; MONTANA ; LEVEL ; USA
WOS研究方向	Geology
语种	英语
出版者	CANADIAN SCIENCE PUBLISHING, NRC RESEARCH PRESS
WOS记录号	WOS:000172980600002
内容类型	期刊论文
源URL	[http://ir.nigpas.ac.cn/handle/332004/22252]
专题	中国科学院南京地质古生物研究所
通讯作者	Eberth, DA
作者单位	1.Royal Tyrrell Museum Palaeontol, Drumheller, AB T0J 0Y0, Canada 2.Nanjing Inst Geol & Palaeontol, Lab Paleobiol & Stratig, Nanjing 210008, Peoples R China 3.NW Univ Xian, Dept Geol, Xian 710069, Peoples R China 4.Xinjiang Bur Geol & Mineral Resources, Inst Geol, Urumqui 830000, Peoples R China 5.Res Inst Petr Explorat & Dev, Karamay 834000, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Eberth, DA,Brinkman, DB,Chen, PJ,et al. Sequence stratigraphy, paleoclimate patterns, and vertebrate fossil preservation in Jurassic-Cretaceous strata of the Junggar Basin, Xinjiang Autonomous Region, People's Republic of China[J]. CANADIAN JOURNAL OF EARTH SCIENCES,2001,38(12):1627-1644.
APA	Eberth, DA.,Brinkman, DB.,Chen, PJ.,Yuan, FT.,Wu, SZ.,...&Cheng, XS.(2001).Sequence stratigraphy, paleoclimate patterns, and vertebrate fossil preservation in Jurassic-Cretaceous strata of the Junggar Basin, Xinjiang Autonomous Region, People's Republic of China.CANADIAN JOURNAL OF EARTH SCIENCES,38(12),1627-1644.
MLA	Eberth, DA,et al."Sequence stratigraphy, paleoclimate patterns, and vertebrate fossil preservation in Jurassic-Cretaceous strata of the Junggar Basin, Xinjiang Autonomous Region, People's Republic of China".CANADIAN JOURNAL OF EARTH SCIENCES 38.12(2001):1627-1644.