| 本文已被：浏览 289次 下载 164次 |
码上扫一扫！ |
| 新疆西博格达山周缘地区中新生代沉积岩源区和构造背景 |
| 赵恒,李艳杰,关宝文,郭建明,郑有伟,许世阳,郑建京 |
|
|
(1. 甘肃省油气资源研究重点实验室/中国科学院油气研究重点实验室, 甘肃 兰州 730000;
2. 中科院西双版纳热带植物园, 云南 勐腊 666303;
3. 中国科学院大学, 北京 100049) |
|
| 摘要: |
| 沉积岩中的碎屑组分及相对稳定的微量元素和稀土元素可以反映物源信息,广泛应用于沉积源区的确定和构造背景的分析。本文通过对西博格达山周缘地区侏罗纪至古近纪沉积地层的碎屑岩岩石学和微量元素与稀土元素分析,揭示盆地沉积岩的源岩来自上地壳,岩性以长英质岩石为主,混合部分安山质及基性岩石。源区构造背景应为岩浆弧和再循环造山带,其中岩浆弧起主导作用。本文的分析结果为研究博格达山的构造演化过程及其机制提供了有力的证据,并且对准噶尔盆地油气勘探具有一定指导意义。 |
| 关键词: 西博格达山 构造背景 物源属性 碎屑组分分析 微量及稀土元素分析 |
| DOI： |
| 附件 |
| 投稿时间：2015-01-21修订日期：2015-05-30 |
| 基金项目:战略性先导专项“构造作用对陆相页岩物性及含气性的影响”(Y413GJ1GJM)、中国科学院知识创新工程青年人才类重要方向项目(KZCX2-EW-QN112)、中国科学院西部行动计划项目(KZCX2-XB3-12)、甘肃省重点实验室专项(1309RTSA041) |
|
| Provenance and tectonic setting of the Mesozoic to Cenozoic sedimentary rocks around the western Bogeda Mountains, Xinjiang |
| ZHAO Heng, LI Yan-jie, GUAN Bao-wen, GUO Jian-ming, ZHENG You-wei, XU Shiyang, ZHENG Jian-jing |
(1. Gansu Key Laboratory of Oil and Gas Resources/Key Laboratory of Oil and Gas Resources under the Chinese Academy of Sciences, Lanzhou 730000, Gansu, China;
2. Xishuangbanna Tropical Botanical Garden under the Chinese Academy of Sciences, Mengla 666303, Yunnan, China;
3. University of the Chinese Academy of Sciences, Beijing 100049, China) |
| Abstract: |
| The integration of petrological, trace element and rare earth element analysis for the Jurassic to the Palaeogene sedimentary rocks around the western Bogeda Mountains, Xinjiang shows that the source rocks of the sedimentary rocks should be derived from the upper crust, and consist dominantly of felsic rocks with the mixtures of andesitic and basic rocks. The tectonic settings of the provenance should be represented by the magmatic arcs and recycled orogens. The results of research in this study may provide essential provements for the study of tectonic evolution and attributes of the provenance of the Jurassic to the Palaeogene sedimentary rocks around the western Bogeda Mountains, and thus are of great significance to the oil and gas exploration in the Junggar Basin, Xinjiang. |
| Key words: western Bogeda Mountains tectonic setting provenance type detrital composition trace element and rare earth element analysis |