| 摘要: |
| 川渝河包场地区发育上三叠统须家河组,该组假整合于中三叠统雷口坡组海相碳酸盐岩侵蚀面之上,不整合/整合伏于侏罗系红层之下的一套以砂泥岩为主,砂岩与泥岩不等厚互层夹薄煤层的"煤系"地层,该组的沉积相长期存在争议。笔者据野外实测剖面资料,结合室内薄片分析,从沉积学观点系统地分析了其砂体展布、岩性、组构等特征,认为河包场地区的须家河组沉积相为湖泊相,沉积亚相主要为滨浅湖亚相及滨岸沼泽。 |
| 关键词: 须家河组 岩石类型 沉积相 沉积模式 川渝河包场地区 |
| DOI： |
| 附件 |
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| 基金项目:西南油气田上三叠统须家河组沉积储层研究 |
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| An approach to the sedimentary facies in the Upper Triassic Xujiahe Formation in the Hebaochang region at the boundary of the Sichuan-Chongqing zone |
| GAO Peng-peng, GAO Sheng-li, ZHU Guan-fang, LIU Chun-yan, BAI Fen-fei, YANG Chang-cheng |
(1. Yanchang Petroleum Co. Ltd., Shaanxi, Xi'an 710075, Shaanxi, China;
2. Science College, Air Force Engineering University, Xi'an 710051, Shaanxi, China;
3. Research Institute, Southwest Oil and Gas Field Company, Petro China, Chengdu 610051, Sichuan, China) |
| Abstract: |
| The Upper Triassic Xujiahe Formation in the Hebaochang region at the boundary of the Sichuan-Chongqing zone is developed as the coal measures dominantly composed of sandstones and mudstones interbedded with thin coal beds,and overlain pseudoconformably upon the erosional surface of the marine carbonate rocks from the Middle Triassic Leikoupo Formation and underlain disconformably or conformably below the Jurassic red beds.The authors in the present paper interprete the sedimentary facies in the study area as the lacustrine facies including the shallow lake subfacies and littoral swamp subfacies on the basis of a careful description of the distribution,lithology and structures of the sandstones in the study area. |
| Key words: Xujiahe Formation rock type sedimentary facies sedimentary model Hebaochang region at the boundary of the Sichuan-Chongqing zone |
