| 峡东震旦纪庙河生物群及其绝灭原因探讨 |
| |
| 引用本文： | 杨剑,丁莲芳.峡东震旦纪庙河生物群及其绝灭原因探讨[J].地球科学与环境学报,1998,20(3):3. |
| |
| 作者姓名： | 杨剑 丁莲芳 |
| |
| 作者单位： | 西南工学院资源系(杨剑)，西安工程学院资源系(丁莲芳) |
| |
| 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。
|
| 关 键 词： | 庙河生物群 灾变事件 陡山沱组灯影组界线 峡东 |
| 修稿时间： | 19971001 |
RESEARCHES ON MIAOHE BIOTA
OF THE SINIAN IN
THE EASTERN REGION OF THE YANGTZE GORGES IN
CHINA AND THE CAUSE OF ITS EXTINCTION |
| |
| Yang Jian.RESEARCHES ON MIAOHE BIOTA
OF THE SINIAN IN
THE EASTERN REGION OF THE YANGTZE GORGES IN
CHINA AND THE CAUSE OF ITS EXTINCTION[J].Journal of Earth Sciences and Environment,1998,20(3):3. |
| |
| Authors: | Yang Jian |
| |
| Institution: | Yang Jian;
( |
| |
| Abstract: | 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. |
| |
| Keywords: | Miaohe Biota catastrophic event Doushantuo formation Dengying formation boundary the eastern Yangtze Gorges in China |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
