| 内蒙古元宝山小建昌营子地区三面井组沉积环境 |
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| 引用本文： | 陈井胜,邢德和,刘淼,张德军,马国祥,杨佳林,张志斌.内蒙古元宝山小建昌营子地区三面井组沉积环境[J].世界地质,2015,34(4):1013-1023. |
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| 作者姓名： | 陈井胜 邢德和 刘淼 张德军 马国祥 杨佳林 张志斌 |
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| 作者单位： | 1. 沈阳地质调查中心，沈阳 110034; 2. 吉林大学 地球科学学院，长春 130061; 3. 吉林大学 古生物学与地层学研究中心，长春 130021; 4. 核工业 243 大队，内蒙古 赤峰 024006 |
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| 摘 要： | 在进行内蒙古1∶5万区域地质调查工作中,对内蒙古赤峰元宝山镇小建昌营子一带的下二叠统三面井组砂岩进行了粒度分析。结果表明,萨胡成因环境判别值为10.66~10.76,沉积环境为河流相或三角洲相;弗里德曼粒度参数判别为陆相河砂沉积;浊流C-M判别图解显示沉积环境介于三角洲与浊流沉积之间。三面井组总体为一套河流相-三角洲前缘滑塌浊积扇沉积。滑塌浊积扇一般发育于深湖、半深湖区,结合本地区三面井组地层中缺乏海相碳酸盐岩沉积,综合认为本区的三面井组形成于河流-湖泊三角洲环境。
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| 关 键 词： | 三面井组 粒度分析 沉积环境 滑塌浊积扇 内蒙古 |
Depositional environment of Sanmianjing Formation in Xiaojianchangyingzi area of Yuanbaoshan，Inner Mongolia |
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| CHEN Jing-Sheng,XING De-He,LIU Miao,ZHANG De-Jun,MA Guo-Xiang,YANG Jia-Lin,ZHANG Zhi-Bin.Depositional environment of Sanmianjing Formation in Xiaojianchangyingzi area of Yuanbaoshan，Inner Mongolia[J].World Geology,2015,34(4):1013-1023. |
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| Authors: | CHEN Jing-Sheng XING De-He LIU Miao ZHANG De-Jun MA Guo-Xiang YANG Jia-Lin ZHANG Zhi-Bin |
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| Institution: | 1. Shenyang Center of Geological Survey，CGS，Shenyang 110034，China; 2. College of Earth Sciences，Jilin University，Changchun 130061，China; 3. Ｒesearch Center of Paleontology ＆ Stratigraphy，Jilin University，Changchun 130061，China; 4. Geological Party No. 243，CNNC，Chifeng 024006，Inner Mongolia，China |
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| Abstract: | The grain- size analysis of sandstone of the Lower Permian Sanmianjing Formation was conducted when the authors were undergoing the 1∶ 500 00 regional geological survey in Xiaojianchangyingzi area of Yuanbaos- han in Chifeng， Inner Mongolia． The results show that the discriminal value of Sahu for the environment is 10. 66 ～ 10. 76，which indicates fluvial or deltaic facies． The Freedman value indicates continental river sand deposition． Turbidity C- M diagrams show the depositional environment is between deltaic and turbidite deposition． Therefore， the Sanmianjing Formation is composed mainly of fluvial- delta front slump turbidite fan deposits． The slump turbi- dite fan is normally developed in deep and semi- deep lake area． Combined with the missing of the marine carbonate strata in this area，the Sanmianjing Formation is considered to be formed in fluvial- lacustrine deltaic environments． |
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| Keywords: | Sanmianjing Formation grain- size analysis depositional environment slump turbidite fan Inner Mongolia |
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