干旱区生态环境知识资源中心(Arid): Quantitative reconstruction of Early Cretaceous dune morphology in the Ordos paleo-desert and its paleoclimatic implications

Arid

DOI	10.3389/feart.2023.1142034
	Quantitative reconstruction of Early Cretaceous dune morphology in the Ordos paleo-desert and its paleoclimatic implications
	Cao, Shuo; Ma, Jing; Zhang, Laiming
通讯作者	Cao, S
来源期刊	FRONTIERS IN EARTH SCIENCE
EISSN	2296-6463
出版年	2023
卷号	11
英文摘要	Deserts are among the most important terrestrial sedimentary environments and have existed in all periods throughout Earth's history. In contrast to modern deserts, the ability to quantitatively evaluate the area and desertification degrees of ancient deserts is limited due to the lack of unambiguous proxies. Dune morphology and their spatial arrangements directly reflect the degree of desertification of deserts. Recently, a methodology for obtaining the morphological parameters of dunes was established, although it has not been applied to ancient dunes and deserts in deep time. In the Ordos Basin, both the Early Cretaceous desert and modern deserts (Hobq Desert and Mu Us Desert) were well developed and exposed, which makes the Ordos Basin an ideal place to quantitatively evaluate the paleo-desert based on the proposed methodology. In this study, a total of 698 and 1,490 morphological parameters reflecting the Early Cretaceous desert and modern deserts in the Ordos Basin were obtained, respectively. For the Ordos paleo-desert, our results show that its area was larger and its degree of desertification was more severe than those of modern mid-latitude deserts, including the modern desert in the Ordos Basin, but were similar to those of the modern low-latitude deserts. Our results, therefore, suggest that the Ordos paleo-desert was a non-negligible and large desert during an interval of Earth's history. Since the other controlling factors, such as regional geography and sources of both the ancient and modern deserts in the Ordos Basin, have remained nearly unchanged, we speculate that it may have been the relatively high temperature, high levels of atmospheric carbon dioxide and relatively low precipitation during the greenhouse period (i.e., Early Cretaceous) that led to the large area and severe degree of desertification of the Ordos paleo-desert.
英文关键词	Ordos paleo-desert quantitative dune morphology Hobq Desert and Mu Us Desert Early Cretaceous greenhouse climate
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000944575000001
WOS关键词	MU US DESERT ; NORTHERN CHINA ; EVOLUTION ; ARCHITECTURE ; SEDIMENTARY ; BASIN ; PROVENANCE ; CLIMATE ; ORIGIN ; SEA
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396477
推荐引用方式 GB/T 7714	Cao, Shuo,Ma, Jing,Zhang, Laiming. Quantitative reconstruction of Early Cretaceous dune morphology in the Ordos paleo-desert and its paleoclimatic implications[J],2023,11.
APA	Cao, Shuo,Ma, Jing,&Zhang, Laiming.(2023).Quantitative reconstruction of Early Cretaceous dune morphology in the Ordos paleo-desert and its paleoclimatic implications.FRONTIERS IN EARTH SCIENCE,11.
MLA	Cao, Shuo,et al."Quantitative reconstruction of Early Cretaceous dune morphology in the Ordos paleo-desert and its paleoclimatic implications".FRONTIERS IN EARTH SCIENCE 11(2023).