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《JOURNAL OF GUILIN INSTITUTE OF TECHNOLOGY》 1995-01
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REVIEW AND PROSPECT OF CRETACEOUSTERTIARY BOUNDARY ANOMALY

Wan Yuqiu;Wang Erkang; Shi Yangshen(Department of Earth sciences, Nanjing University)  
In this review, the controversial issue is summarized on the abnormal sedimentation at the time of the K-R boundary,and our tentative brief appraise is given to the different explanations of the impact and the volcanism for the anomalies at K-R boundary.Conclusively, it is suggested that many anomalies in geological records at K-R boundary is caused mainly by extraterrestrial impact.In addition, volcanism, microbial activity, combined with accumulation effect of gradually environmental change are also very important causes.
【Fund】: 国家自然科学基金
【CateGory Index】: P534.53
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【References】
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【Co-references】
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