geochemicalenvironmentalchangesanddinosaurextinctionduringthecretaceouspaleogenekttransitioninthenanxiongbasinsouthchinaevidencefromdinosaureggshells

IVPP-IR

	geochemicalenvironmentalchangesanddinosaurextinctionduringthecretaceouspaleogenekttransitioninthenanxiongbasinsouthchinaevidencefromdinosaureggshells
	ZHAO ZiKui 1; MAO XueYing 2; CHAI ZhiFang 2; YANG GaoChuang 2; ZHANG FuCheng1 ; YAN Zheng 3
	2009
发表期刊	chinesesciencebulletin
ISSN	1001-6538
卷号	54 期号:5 页码:806
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 O-18 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.
语种	英语
资助项目	[National Natural Science Foundation of China] ; [Chinese Academy of Sciences]
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/15587
专题	中国科学院古脊椎动物与古人类研究所
作者单位	1.中国科学院古脊椎动物与古人类研究所 2.中国科学院高能物理研究所 3.Institute of Geology, State Seismological Bureau
第一作者单位	中国科学院古脊椎动物与古人类研究所
推荐引用方式 GB/T 7714	ZHAO ZiKui,MAO XueYing,CHAI ZhiFang,et al. geochemicalenvironmentalchangesanddinosaurextinctionduringthecretaceouspaleogenekttransitioninthenanxiongbasinsouthchinaevidencefromdinosaureggshells[J]. chinesesciencebulletin,2009,54(5):806.
APA	ZHAO ZiKui,MAO XueYing,CHAI ZhiFang,YANG GaoChuang,ZHANG FuCheng,&YAN Zheng.(2009).geochemicalenvironmentalchangesanddinosaurextinctionduringthecretaceouspaleogenekttransitioninthenanxiongbasinsouthchinaevidencefromdinosaureggshells.chinesesciencebulletin,54(5),806.
MLA	ZHAO ZiKui,et al."geochemicalenvironmentalchangesanddinosaurextinctionduringthecretaceouspaleogenekttransitioninthenanxiongbasinsouthchinaevidencefromdinosaureggshells".chinesesciencebulletin 54.5(2009):806.