Late Cretaceous paleoclimatic effects on the decreased dinosaur biodiversity in East Qinling

doi:10.6038/cjg2023R0032

IVPP-IR

	Late Cretaceous paleoclimatic effects on the decreased dinosaur biodiversity in East Qinling
	Wang XueTing 1,2; Jiang Kai 3; Liang Yao 1; Su Bai 1,3; Li JianGang 3; Zheng BoYang 3; Liang WenTian 3; Jiang ZhaoXia 4; Wang Qiang5 ; Jin ChunSheng 1,6
	2023-09-01
发表期刊	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
ISSN	0001-5733
卷号	66 期号:9 页码:3774-3788
通讯作者	Jin ChunSheng(csjin@mail.iggcas.ac.cn)
摘要	Climatic and environmental changes are the principal drivers affecting biota evolution. Therefore, reconstructing the paleoclimate and paleoenvironment background of terrestrial ecosystems is critical for discussing the evolution and extinction of biota. China is located in East Asia and is rich in dinosaur bone fossils and eggshells. However, the effects of climate and hydrologic environment in China on dinosaur biodiversity variation remain unclear. In East Qinling, several Late Mesozoicearly Cenozoic sedimentary basins preserve abundant Late Cretaceous dinosaur bone and egg fossils and Cenozoic mammal fossils. Thus, it is an ideal area to explore the relationship between the evolution of dinosaur biodiversity and regional climate changes. Here, we performed environmental magnetism and geochemistry at the Haoyanghe section of the Lingbao Basin to reconstruct the silicate weathering history and climate-hydrologic environment variation. The magnetic susceptibility and chemical weathering intensity reveal three stages of climatic-hydrological evolution. During ca. 74. 4 similar to 68. 0 Ma, the study area was in a stable hydrodynamic and deep-lacustrine environment with a gradually cold climate. From 68. 0 to 65. 8 Ma, the region became increasingly aridification, and the intensity of hydrological fluctuation strengthens. During ca. 65. 8 similar to 54. 7 Ma, the regional climate changed strongly, showing an enhanced dry-wet hydrological cycle. This study reveals the relationship between paleoclimate-hydrologic environment changes and dinosaur population evolution, suggesting that the climatic aridity and increased hydrologic fluctuation at the end of the Late Cretaceous (ca. 68 similar to 66 Ma) may be the main driving factor for the low biodiversity and extinction of the dinosaurs in East Qinling. Our study provides new data support for further understanding of the co-evolution of biology and environment.
关键词	Lingbao Basin Late Cretaceous Paleoclimate Hydrologic environment Aridification Dinosaur biodiversity
DOI	10.6038/cjg2023R0032
关键词[WOS]	SEDIMENTARY-ROCKS ; MASS EXTINCTION ; CLIMATE ; SUSCEPTIBILITY ; PEDOGENESIS ; ELEMENTS ; IMPACT
收录类别	SCI
语种	英语
WOS研究方向	Geochemistry & Geophysics
WOS类目	Geochemistry & Geophysics
WOS记录号	WOS:001064464700014
出版者	SCIENCE PRESS
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/22921
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Jin ChunSheng
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Northwest Univ, State Key Lab Continental Dynam, Xian 710069, Peoples R China 4.Ocean Univ China, Coll Marine Geosci, Qingdao 266100, Peoples R China 5.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing 100044, Peoples R China 6.Chinese Acad Sci, Innovat Acad Earth Sci, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wang XueTing,Jiang Kai,Liang Yao,et al. Late Cretaceous paleoclimatic effects on the decreased dinosaur biodiversity in East Qinling[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2023,66(9):3774-3788.
APA	Wang XueTing.,Jiang Kai.,Liang Yao.,Su Bai.,Li JianGang.,...&Jin ChunSheng.(2023).Late Cretaceous paleoclimatic effects on the decreased dinosaur biodiversity in East Qinling.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,66(9),3774-3788.
MLA	Wang XueTing,et al."Late Cretaceous paleoclimatic effects on the decreased dinosaur biodiversity in East Qinling".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 66.9(2023):3774-3788.