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| 利用磷灰石裂变径迹约束脆性断裂活动的时限 | |
| 引用本文： | 王先美,钟大赉,王毅.利用磷灰石裂变径迹约束脆性断裂活动的时限[J].地球物理学进展,2008,23(5):1444-1455. |
| 作者姓名： | 王先美 钟大赉 王毅 |
| 作者单位： | 1. 中国石油化工股份有限公司石油勘探开发研究院,北京,100083;中国科学院地质与地球物理研究所,北京,100029 2. 中国科学院地质与地球物理研究所,北京,100029 3. 中国石油化工股份有限公司石油勘探开发研究院,北京,100083 |
| 基金项目： | 中国科学院知识创新工程重大项目 |
| 摘 要： | 本文通过}西隆起区、沂沭断裂带不同性质断裂构造解析,并对其构造带及构造带两侧未变形地层进行野外样品采集、测试、分析的实例总结,认为利用磷灰石裂变径迹低温测年技术,辅助以样品磷灰石裂变径迹冷却史模拟分析,可以直接对地质体不同性质断裂活动的时间进行约束.鉴于磷灰石裂变径迹对低温特殊的敏感性与反映温度区间的局限性,利用该方法约束断裂时限时,需注意包括野外采样等多个环节,需要结合大量的区域地质资料综合分析,必要时要辅助以其他同位素测年手段进行综合约束,以获得断裂活动的可靠信息. |
| 关 键 词： | 磷灰石裂变径迹 冷却史模拟 脆性断裂 构造带 热年代学 |
| 收稿时间： | 2008-1-10 |
| 修稿时间： | 2008-5-20 |
A case of application using apatite fission track to restrict the time of brittle fault movement |
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| WANG Xian-mei,ZHONG Da-lai,WANG Yi.A case of application using apatite fission track to restrict the time of brittle fault movement[J].Progress in Geophysics,2008,23(5):1444-1455. | |
| Authors: | WANG Xian-mei ZHONG Da-lai WANG Yi |
| Institution: | (1.InstituteofPetroleumExplorationandDevelopment,Sinopec,Beijing100083,China;2.InstituteofGeologyandGeophysics,ChineseAcademyofSciences,Beijng100029,China) |
| Abstract: | Based on detailed structural decipher on different kinds of faults in west Shandong and Yi-Shu fault zone, samples contained apatite have been collected continuously in structural belts and un-deformed geologic body near faults. By means of low-temperature testing skill of apatite fission track, combined with analysis of data achieved in laboratory and reverse modeling of apatite fission track, the time limit of deferent faults movement can be efficiently restricted. Many detailed processes, including collection of outcrop samples, should be concerned when this method is applied because of the low-temperature sensitivity and restricted range to temperature of apatite fission track. For the sake of obtaining reliable time limit of fault movement, it is necessary to seek regional geologic information for further analysis and other isotope chronology might also be advised to restrict the time limit of fault movement. |
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