准噶尔盆地南缘露头区白垩系清水河组浊积岩的发现及其意义  

Discovery and Its Implication of Turbidite in Cretaceous Qingshuihe Formation in the Southern Margin Outcrop of Junggar Basin

作　　者：宋俊杰[1] 王振奇[1] 邹国亮 岳欣欣[3] 张成壮 

机构地区：[1]长江大学地球科学学院,武汉430100 [2]中石油长庆油田分公司勘探部,西安710018 [3]中石化南阳油田分公司物探研究院,南阳473132

出　　处：《科学技术与工程》2015年第3期47-51,65,共6页Science Technology and Engineering

基　　金：国家重大科技专项(2011ZX05030-003-001)资助

摘　　要：对准噶尔盆地南缘露头区白垩系进行了仔细研究后查明,在清水河组中部湖泊相中发现浊积岩沉积,这套浊积岩位于湖侵体系域的上部,具有鲍玛序列A段、B段和C段特征:A段以细砂岩为主,见递变层理;B段以细砂岩-粉砂岩为主,见平行层理;C段以粉砂岩、泥质粉砂岩为主,见小型波纹层理。清水河组浊积岩的出现,不仅表明白垩纪早期曾经历了急剧的构造沉降;并伴随大规模的湖侵;而且可以形成有利的储盖组合,成为油气勘探的潜在领域。The Cretaceous Qingshuihe Formation in the Southern margin outcrop of Junggar basin is studied in detail.Discovery the turbidites were deposited in the middle part of Qingshuihe Formation,in the upper lake transgressive system tract.The main deposition sequence is incomplete Bouma sequence,as well as A、B、C.Bouma sequence A was mainly fine sandstone,with the graded bedding;Bouma sequence B was mainly fine sandstone-siltstone with the parallel bedding;Bouma sequence C was mainly siltstone and pelitic siltstone with the small ripple bedding.The sedimentary sequence of Qingshuihe Formation and the turbidite characteristic,not only shows that the Early Crataceous has undergone rapid tectonic subsidence and large scale lake transgression,but also this can form favorable reservoir cap combination,become the potential area of oil and gas exploration.

关 键 词：准噶尔盆地 南玛纳斯背斜 白垩系 清水河组 浊积岩 

分 类 号：TE121.2[石油与天然气工程—油气勘探]