| 柴达木盆地鱼卡地区中侏罗统石门沟组砂岩碎屑组分特征及其物源构造环境分析 |
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| 引用本文： | 王涛,刘招君,孙平昌,白悦悦,宋朔.柴达木盆地鱼卡地区中侏罗统石门沟组砂岩碎屑组分特征及其物源构造环境分析[J].世界地质,2018,37(1):154-161. |
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| 作者姓名： | 王涛 刘招君 孙平昌 白悦悦 宋朔 |
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| 作者单位： | 1. 吉林大学地球科学学院, 长春 130061;2. 吉林省油页岩与共生能源矿产重点实验室, 长春 130061;3. 中国石油吉林油田分公司勘探开发研究院, 吉林 松原 138000 |
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| 基金项目： | 中国地质调查局油气资源调查中心战略选区项目（1211302108025-3-1）、中国地质调查局油气资源调查中心地质调查项目（DD20160188-01）联合资助. |
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| 摘 要： | 利用砂岩碎屑骨架成分统计和碎屑颗粒结构特征分析,研究柴达木盆地北缘鱼卡地区中侏罗统石门沟组碎屑岩的源岩类型及其构造环境。石门沟组砂岩成分成熟度中等、结构成熟度较低,具有近源物源的特点。砂岩碎屑骨架成分统计结果表明石门沟组的物源区构造背景属于再旋回造山带。结合柴达木盆地北缘中侏罗统古地理特征,确认鱼卡地区石门沟组物源区为祁连山造山带。砂岩碎屑组分可能来自于南祁连山上石炭世宗务隆山群火山岩和达肯达坂山群变质岩。
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| 关 键 词： | 柴达木盆地 鱼卡地区 石门沟组 物源分析 碎屑组分 祁连山造山带 |
| 收稿时间： | 2017-03-15 |
| 修稿时间： | 2017-08-22 |
Sandstone detrital composition and provenance tectonic attributes of Middle Jurassic Shimengou Formation in Yuqia area of Qaidam Basin |
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| WANG Tao,LIU Zhao-jun,SUN Ping-chang,BAI Yue-yue,SONG Shuo.Sandstone detrital composition and provenance tectonic attributes of Middle Jurassic Shimengou Formation in Yuqia area of Qaidam Basin[J].World Geology,2018,37(1):154-161. |
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| Authors: | WANG Tao LIU Zhao-jun SUN Ping-chang BAI Yue-yue SONG Shuo |
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| Institution: | 1. College of Earth Sciences, Jilin University, Changchun 130061, China;2. Key Laboratory of Oil Shale and Coexistent Energy Minerals of Jilin Province, Changchun 130061, China;3. Exploration and Development Research Institute of PetroChina, Jilin Oilfield Company, Songyuan 138000, Jilin, China |
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| Abstract: | Using the statistics of sandstone detrial composition and analysis of detrital texture, the authors studied the provenance rock type and tectonic enviroment of Middle Jurassic Shimengou Formation in Yuqia area of northern Qaidam Basin. Compositional maturity of the sandstone is medium and textural maturity is relatively low, indicating that Shimengou Formation has a proximal provenance. The statistics of sandstone composition show that the tectonic setting of provenance may belong to recycling orogen. According to the Middle Jurassic sedimentary facies and paleogeography in Qaidam Basin, Qilian Mountains orogenic belt is regarded as the provenance of Shimengou Formation in Yuqia area. It is suggested that the detrial components of sandstone are originated from volcanic rocks of Upper Carboniferous Zongwulong Mountain Group and metamorphic rocks of Dakenda Sakamoto Group in South Qilian Mountains. |
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| Keywords: | Qaidam Basin Yuqia area Shimengou Formation provenance analysis sandstone detrital composition Qilian Mountains orogenic belt |
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