| 川东南地区燕山期以来的隆升剥蚀历史研究 |
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| 引用本文： | 王东,王国芝,刘树根.川东南地区燕山期以来的隆升剥蚀历史研究[J].四川地质学报,2009,29(1):5-7,10. |
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| 作者姓名： | 王东 王国芝 刘树根 |
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| 作者单位： | 1. 成都理工大学地球科学学院,成都,610059
2. 成都理工大学油气藏地质及开发工程国家重点实验室,成都,610059 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，矿物岩石矿床国家重点学科建设项目(预建设) |
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| 摘 要： | 川东南地区侏罗系砂岩的磷灰石裂变径迹T—t热史模拟表明，燕山期以来研究区经历了两个阶段的隆升剥蚀。127～105Ma为初始缓慢隆升阶段，隆升剥蚀速率约为5m／Ma，使106m厚的早白垩世地层被剥蚀；105～75Ma间转入快速沉降，75～0Ma由快速沉降转入全面不等速隆升。其中，75—65Ma为快速隆升．隆升剥蚀速率为28m／Ma；65～20Ma为缓慢隆升，隆升剥蚀速率为14m／Ma；20～10Ma期间，研究区由缓慢隆升转为急剧隆升，隆井剥蚀速率为147m／Ma；10Ma到现今，该地区再次由快速隆升转为缓慢隆升。隆升剥蚀速率为10m／Ma。燕山期以来的隆升使大约2580m厚的地层被剥蚀掉。
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| 关 键 词： | 磷灰石 裂变径迹 T—t轨迹 隆升剥蚀：川东南 |
Study of History of Uplift and Denudation in Southeast Sichuan since Yanshan Epoch |
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| WANG Dong,WANG Guo-zhi,LIU Shu-gen.Study of History of Uplift and Denudation in Southeast Sichuan since Yanshan Epoch[J].Acta Geologica Sichuan,2009,29(1):5-7,10. |
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| Authors: | WANG Dong WANG Guo-zhi LIU Shu-gen |
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| Institution: | 1-College of Earth Sciences;Chengdu University of Technology;Chengdu 610059;2- State Key Laboratory for Geology of Oil and Gas Accumulation and Development Engineering;Chengdu 610059 |
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| Abstract: | T-t thermal history path of apatite fission track from the Jurassic sandstone shows two stages of uplift and denudation in southeast Sichuan since Yanshan epoch. The initial uplift took place during 127 Ma-105 Ma with a rate of uplift and denudation of about 5 m/Ma, resulting in denudation of 106 m thick Lowery Cretaceous. The second uplift took place during 75 Ma-0 Ma. This stage may be divided into four interval with different uplift rates such as 75 Ma-65 Ma, 65 Ma-20 Ma, 20 Ma-10 Ma and 10 Ma-0 Ma. The ... |
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| Keywords: | apatite fission track T-t path uplift and denudation southeast Sichuan |
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