摘要
地球灾变事件是导致古生物大规模绝灭和沉积环境突变的根本原因。我们研究了峡东庙河陡山沱组灯影组界线剖面，获得ＲＥＥ及其它微量元素异常和大量微球粒等灾变事件的证据，从而判定庙河生物群的大绝灭是由于陡山沱期末的一次地球灾变事件的结果。
The mass extinction of organisms and the sedimentary environment mutation are due to the catastrophic event. The Doushantuo formation Dengying formation boundary section at Miaohe in the eastern Yangtze Gorges in China is studied. And we have found the evidences of the catastrophic event such as the anomaly of REE, the other microelements and a large amount of microspherules. So it is concluded that the catastrophic event at the end of Doushantuo stage led to the mass extinction of Miaohe Biota.
出处
《西安工程学院学报》
1998年第3期1-4,共4页
Journal of Xi'an Engineering University
基金
国家自然科学基金
关键词
庙河
生物群
灾变事件
绝灭原因
震旦纪
Miaohe Biota, catastrophic event, Doushantuo formation Dengying formation boundary, the eastern Yangtze Gorges in China
