| 地层界线上灾变事件标志和成因的探讨 |
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| 关键词:catastrophic events indicators and origin stratigraphic boundaries, |
| 基金项目:中国科学院南京古生物地质研究所现代古生物学和地质学开放实验室的课题 |
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| Inquiring into Indicators and Origin of Catastrophic Events at Stratigraphic Boundaries |
| Since 1982,considerable indicators of catastraphic events have been observed at the main stratigraphic boundaries in China during the Phanerozoic,i.e. Precambrian-Cambrian,Permain-Triassic, Cretaceous-Tertiarv as well as Ordovician-Silurian and Devonian- Carboniferous bounda-ries. These marks are boundary clay layer,microspherules,high Iranomaly,mass extinction of organism and impact of meteorite. We support the hypothesis ofextraterrestrial origin of catastrophic events and suggest that the events at differentstratigraphic boundaries might be different in feature and process. |
| ZHANG Qin-wen,XU Dao-yi.1994.Inquiring into Indicators and Origin of Catastrophic Events at Stratigraphic Boundaries[J].Acta Geoscientica Sinica,15(3,4):192-199. |
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