Geochemical environmental changes and dinosaur extinction during the Cretaceous-Paleogene (K/T) transition in the Nanxiong Basin, South China: Evidence from dinosaur eggshells

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	Geochemical environmental changes and dinosaur extinction during the Cretaceous-Paleogene (K/T) transition in the Nanxiong Basin, South China: Evidence from dinosaur eggshells
	Zhao ZiKui 1; Mao XueYing 2,3; Chai ZhiFang 2,3; Yang GaoChuang 2,3; Zhang FuCheng1 ; Yan Zheng 4; zk.zhao@gmail.com
刊名	CHINESE SCIENCE BULLETIN
	2009-03-01
卷号	54 期号:5 页码:806-815
关键词	Nanxiong Basin Of Guangdong Province Cretaceous-paleogene (K/t) Boundary Ir Anomaly Trace Element Stable Isotope Dinosaur Eggshell Dinosaur Extinction
ISSN号	1001-6538
文献子类	Article
英文摘要	The complex patterns of trace elements including Ir and isotope distributions in the three K/T sections of the Nanxiong Basin prove the existence of two environmental events in the latest Cretaceous and earliest Paleocene. The first geochemical environmental event occurred at about 2 Ma prior to the K/T boundary interval, where the dinosaur diversity was hardly reduced, except that a number of pathological eggshells appeared. The second one was larger and occurred just at and near the Cretaceous-Paleogene (K/T) boundary. The extinction of the dinosaurs spread out within 250 ka with major extinction beginning at the boundary interval. This is even later than their extinction in Montana, North America and in India. The cause of the dinosaur extinction may be the result of a complex multiple events brought about by the coincidence of global environment change marked by multiple Ir and delta(18)O anomalies, and environmental poisoning characterized by other trace elements derived from the local source. Successive short- and long-term conditions of geochemically induced environmental stress negatively affected the reproductive process and thus contributed to the extinction of the dinosaurs.
URL标识	查看原文
WOS关键词	TERTIARY BOUNDARY ; CHICXULUB CRATER ; DECCAN TRAPS ; MASS EXTINCTIONS ; FLOOD BASALTS ; VOLCANISM ; IRIDIUM ; INDIA ; EGGS ; AGE
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000263787900015
公开日期	2013-11-27
内容类型	期刊论文
源URL	[http://119.78.100.205/handle/311034/4756]
专题	古脊椎动物与古人类研究所_图书馆1 古脊椎动物与古人类研究所_古低等脊椎动物研究室
通讯作者	zk.zhao@gmail.com
作者单位	1.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Lab Evolutionary Systemat Vertebrates, Beijing 100044, Peoples R China 2.Chinese Acad Sci, Inst High Energy Phys, Beijing 100080, Peoples R China 3.Chinese Acad Sci, Lab Nucl Analyt Tech, Beijing 100080, Peoples R China 4.State Seismol Bur, Inst Geol, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Zhao ZiKui,Mao XueYing,Chai ZhiFang,et al. Geochemical environmental changes and dinosaur extinction during the Cretaceous-Paleogene (K/T) transition in the Nanxiong Basin, South China: Evidence from dinosaur eggshells[J]. CHINESE SCIENCE BULLETIN,2009,54(5):806-815.
APA	Zhao ZiKui.,Mao XueYing.,Chai ZhiFang.,Yang GaoChuang.,Zhang FuCheng.,...&zk.zhao@gmail.com.(2009).Geochemical environmental changes and dinosaur extinction during the Cretaceous-Paleogene (K/T) transition in the Nanxiong Basin, South China: Evidence from dinosaur eggshells.CHINESE SCIENCE BULLETIN,54(5),806-815.
MLA	Zhao ZiKui,et al."Geochemical environmental changes and dinosaur extinction during the Cretaceous-Paleogene (K/T) transition in the Nanxiong Basin, South China: Evidence from dinosaur eggshells".CHINESE SCIENCE BULLETIN 54.5(2009):806-815.