摘要
准噶尔盆地石西凸起地区下白垩统呼图壁河组呼一段存在湖相风暴岩。建立沉积模式,探讨风暴岩发育条件及意义。研究区风暴沉积是由于风暴浪作用于浅湖泥坪和滨岸沼泽,使沉积物重新搅起、打碎形成泥砾,再通过风暴流搬运到三角洲前缘或滨浅湖滩坝中,与未固结的砂质沉积而成。研究区典型风暴岩沉积构造丰富,完整的单层风暴沉积不发育,常见不完整风暴沉积和多次风暴作用形成的若干不完整风暴岩的叠置层。通过对岩心及沉积背景分析认为,研究区呼一段沉积时湖盆水动力较强,湖岸周围古地形平缓,湖盆水体较浅,具坡折带。有利砂体具相互叠置、厚度大、分布面积广特点。
On the basis of the core observation, introduces the Shixi bulge area of Lower Cretaceous Hutubi River group a section of the storm rock, sedimentary model is established, and probes into the storm rocks development condition and its significance.The storm rock is by storm waves in shallow lake mud flat and coastal marsh, the sediment to stir up, breaking the formation of boulder clay, and through the storm flow transported to the delta front or shore-shallow lake dam,together form the sediments and unconsolidated sand.The study area rich typical tempestite sedimentary structure,single storm deposition complete not development, formed the common incomplete storm deposition and the storm effect of some incomplete storm rocks stacked layer.Through the analysis of the core and sedimentary background of the research area that call a sedimentary basin water power strong,lake surrounded by ancient flat terrain,the lake water is shallow,with slope belt.The favorable sand body has the characteristics of superimposition,big thickness,wide distribution area.Therefore,the Cretaceous Shixi bulge area call found a section of storm rock exploration in this area and the sedimentary facies recognition has important significance.
出处
《新疆地质》
CAS
CSCD
北大核心
2014年第2期168-171,共4页
Xinjiang Geology
关键词
准噶尔盆地
下白垩统
风暴岩
沉积模式
Junggar basin
Lower Cretaceous
Tempestite
Sedimentary model
