| 白垩系与第三系界线异常的回顾与展望 |
| |
| 引用本文： | 万玉秋,王尔康.白垩系与第三系界线异常的回顾与展望[J].桂林工学院学报,1995,15(1):23-33. |
| |
| 作者姓名： | 万玉秋 王尔康 |
| |
| 作者单位： | 南京大学地球科学系 |
| |
| 摘 要： | 阐述了在白垩系与第三系界线上的几个最主要的异常现象的地质记录，并就冲击论和火山论对这些异常现象进行不同的解释和概要的综述。认为Ｋ－Ｒ界线地质记录中诸多的异常现象主要由地外撞击引发的巨大灾变而造成，而火山作用，微生物作用以及环境渐变的累积效应也不可忽略。
|
| 关 键 词： | 白垩纪 第三纪 灭绝事件 铱异常 冲击石英 地层 |
REVIEW AND PROSPECT OF CRETACEOUSTERTIARY BOUNDARY ANOMALY |
| |
| Wan Yuqiu,Wang Erkang, Shi Yangshen.REVIEW AND PROSPECT OF CRETACEOUSTERTIARY BOUNDARY ANOMALY[J].Journal of Guilin University of Technology,1995,15(1):23-33. |
| |
| Authors: | Wan Yuqiu Wang Erkang Shi Yangshen |
| |
| Abstract: | 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. |
| |
| Keywords: | Cretaceous-Tertiary extinction event Ir anomaly microspherolite shock quartz |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
