| 南方志留系碎屑矿物热年代学分析及其地质意义 |
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| 引用本文： | 李双建,汪新伟,张荣强,沃玉进,周雁,蔡立国.南方志留系碎屑矿物热年代学分析及其地质意义[J].地质学报,2008,82(8):1068-1076. |
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| 作者姓名： | 李双建 汪新伟 张荣强 沃玉进 周雁 蔡立国 |
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| 作者单位： | 中国石化石油勘探开发研究院,北京,100083 |
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| 基金项目： | 本文为国家自然科学基金委员会-中国石油化工股份有限公司联合研究基金（石油化工联合基金）项目（编号40739904）的资助成果。 |
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| 摘 要： | 碎屑矿物热年代学是恢复多旋回沉积盆地构造演化的有利手段。本文通过对南方5个地区志留系的碎屑锆石和磷灰石的裂变径迹年龄和热历史模拟研究认识到，印支期以来研究区志留系至少经历了3次区域性的岩石抬升、冷却事件，即早中三叠世（235～250 Ma）、晚侏罗世—早白垩世（110～140 Ma）和始新世—渐新世（45～25 Ma）。其中晚侏罗世—早白垩世和始新世—渐新世是志留系后期改造的两个关键时期，前者是志留系烃源岩生烃基本停止的时期，后者是志留系抬升到地表，油气盖层受到广泛破坏的时期。
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| 关 键 词： | 南方 志留系 裂变径迹 热年代学 锆石 磷灰石 |
| 收稿时间： | 2008/4/10 0:00:00 |
| 修稿时间： | 7/5/2008 12:00:00 AM |
Thermochronology of Detrital Minerals in the Silurian Strata from Southern China and Its Geological Implications |
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| LI Shuangjian,XIAO Kaihua,WANG Xinwei,ZHANG Rongqiang,WO Yujin,ZHOU Yan,CAI Liguo.Thermochronology of Detrital Minerals in the Silurian Strata from Southern China and Its Geological Implications[J].Acta Geologica Sinica,2008,82(8):1068-1076. |
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| Authors: | LI Shuangjian XIAO Kaihua WANG Xinwei ZHANG Rongqiang WO Yujin ZHOU Yan CAI Liguo |
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| Abstract: | Thermochronology of detrital minerals is auseful means to reveal the tectonic evolution of multi-cycle sedimentary basin. According to the fission track age of detrital zircon and apatitesamples collected from 5 areas of the Silurian strata in Southern China,the conclusion can be drawnthat the Silurian strata have experienced at least three regional uplifting and cooling events since Indosinian,in early Middle Triassic,Late Jurassic-Early Cretaceous and Eocene-Oligocene,respectively. Ofthem,the latter two are the key periods for reformation of Silurian strata. The former is the time in which the Silurian source rock stopped generatinghydrocarbon,while the latter went up to the surface,resulting in that the seal rock was destroyed intensively. |
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| Keywords: | Southern China Silurian fission track thermochronology zircon apatite |
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