|
|||||
|
|
| 内蒙古林西地区上二叠统林西组沉积环境与演变 | |
| 引用本文： | 翟大兴,张永生,田树刚,吴非蒙,邢恩袁,王猛,施立志,王卓卓.内蒙古林西地区上二叠统林西组沉积环境与演变[J].古地理学报,2015,17(3):359-370. |
| 作者姓名： | 翟大兴 张永生 田树刚 吴非蒙 邢恩袁 王猛 施立志 王卓卓 |
| 作者单位： | 1.中国地质科学院矿产资源研究所,国土资源部盐湖资源与环境重点实验室,北京 100037;2.中国地质大学(北京)地球科学与资源学院,北京 100083;3.中国地质科学院地质研究所,北京 100037;4.长江大学地球科学学院,湖北武汉 430100;5.中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆 163712 |
| 基金项目： | 国家自然科学面上基金项目(编号:41472027)和中国地质调查局项目“乌拉特—赤峰盆地群页岩气资源综合调查”(编号:1212011120972)联合资助 |
| 摘 要： | 内蒙古东部林西地区上二叠统林西组沉积环境存在争议。鉴于此,笔者在前人研究基础上,通过详实的野外观测与室内鉴定,依据古生物、沉积构造与岩相、地球化学等资料,对林西组沉积环境进行研究;从钙藻、苔藓虫、海绵等海相生物化石、B/Ga值、碳氧同位素和沉积结构构造等方面,认为林西组主体为海相,存在海陆过渡相。林西组沉积环境可划分为三角洲前缘、滨海、浅海和半深海。生物礁主要为蓝绿藻粘结礁和藻粘结骨架礁,指示滨海—浅海环境。林西组沉积环境主要经历了滨海、半深海、三角洲前缘、浅海和滨海的演变,沉积盆地演化分为抬升—断陷—快速充填—稳定沉陷—稳定充填5个阶段。 |
| 关 键 词： | 内蒙古 上二叠统 林西组 沉积环境 |
| 收稿时间： | 29 October 2014 |
Sedimentary environment and evolution of the Upper Permian Linxi Formation in Linxi area,Inner Mongolia |
|
| Zhai Daxing,Zhang Yongsheng,Tian Shugang,Wu Feimeng,Xing Enyuan Wang Meng,Shi Lizhi,Wang Zhuozhuo.Sedimentary environment and evolution of the Upper Permian Linxi Formation in Linxi area,Inner Mongolia[J].Journal of Palaeogeography,2015,17(3):359-370. |
|
| Authors: | Zhai Daxing Zhang Yongsheng Tian Shugang Wu Feimeng Xing Enyuan Wang Meng Shi Lizhi Wang Zhuozhuo |
| Abstract: | Sedimentary environment of the Upper Permian Linxi Formation in eastern Inner Mongolia has been in dispute for a long time. Herein, based on previous research data, the environment is discussed in this paper after detailed field and indoor study on palaeontology,sedimentary structure,lithofacies,geochemistry etc. Evidences from marine fossils(calcareous algae,bryozoans,and sponges),B/Ga value,carbon and oxygen isotopes,sedimentary structure,and other aspects show that the Linxi Formation is mainly of marine facies along with partial transitional facies. It is principally divided into delta front,littoral,shallow sea and semi￣deep sea. Reefs mainly include blue green algae bonding reefs and algal bonding framework reefs,suggesting a littoral and shallow sea environment. The depositional environment of Linxi Formation developed from littoral,semi￣deep sea,delta front,shallow sea to littoral,while the evolution of sedimentary basin was divided into five stages, including uplift,rift,rapid,filling, steady subsidence and stable filling stages. |
| Keywords: | Inner Mongolia Late Permian Linxi Formation sedimentary environment |
| 本文献已被 CNKI 等数据库收录！ | |
| 点击此处可从《古地理学报》浏览原始摘要信息 | |
| 点击此处可从《古地理学报》下载免费的PDF全文 | |