| 辽西晚中生代火山活动与热河生物群的时代 |
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| 引用本文：李大明,李齐,郑德文.2005.辽西晚中生代火山活动与热河生物群的时代[J].地球学报,26(z1):90-91. |
| DOI：10.3975/cagsb.2005.s1.29 |
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| 基金项目:本文为国家自然科学基金项目（编号：40273029)成果。 |
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| 中文摘要:利用K-Ar和Ar-Ar年代学方法，测定辽西四合屯火山岩剖面133.6~133.1 Ma、129.3~129.2 Ma、大约126.1 Ma和125.1~124.2 Ma等4个火山活动期。含古生物化石的湖相沉积地层存在于第四期火山活动期间，沉积持续时间不超过1 Ma。结合其他研究结果，热河生物群的可能持续存在于侏罗纪晚期至早白要纪期间。 |
| 中文关键词:辽西火山 热河生物群 K-Ar(Ar-Ar）年龄 |
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| The Ages of Volcanic Activity in West Liaoning Province and Rehe Biota |
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| Abstract:The ages of volcanic activity and the lacustrine strata with paleontological fossil in Sihetun of west Liaoning Province were dated by K-Ar and Ar-Ar chronologic methods. In addition, the time of Rehe biota was inferred from the relationship between the volcanic activity and the extinction of Rehe biota. |
| keywords:volcanic activity in west Liaoning Rehe biota K-Ar and Ar-Ar Isotopic age |
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