摘要
新疆和静巴音布鲁克地区侏罗系中发育一套在潮湿气候条件下形成的冲积角进积至内陆湖泊中而形成的扇三角洲沉积体。三角洲层序完整，清楚显示向湖进积序列：扇三角洲平原部分主要以泥石流成因的块状砂砾岩为主，夹扇面河道沉积的含砾砂岩、中粗粒砂岩透镜体及中落层状漫流沉积；扇三角洲前缘以碎屑流沉积的块状砂砾岩为主，夹水下分流河道沉积的砂岩透镜体；前扇三角洲以深灰色页岩、粉砂质页岩为主，夹浊流成因的砂岩，沉积体中含丰富的植物化石，局部见碳质页岩及薄煤层，前扇三角洲泥岩为好的烃源岩。
A set of fan-delta bodies formed as an alluvial fan prograded into a lake at hundd climate in Jurassic of Bayinbuluk area, Hejing, Xinjiang. Complete fan-delta sequence shows clearly lakeward progradation sequence. Fan-delta plain is dondnated by massive sandy conglomerae of debris flow origin, interbedded with lenticular pebbly sandstone or medium to coaree-graned sandstone and medium to flaggy sediments of sheet now origin. Fan-delta front is dondnated by massive sandy conglomerate of debris flow origin, with occasional lenticular sandstone of distribuop channel facies. Dedelta mainly consists of blackgray shale and silty shale, interbedded with sandstone formed by turbidity current. Abundant plant fossils are found in fan-delta, with local carbonaceous shale and thin coal seam. Mudstone in prodelta is a good source rock.
出处
《新疆石油地质》
CAS
CSCD
1999年第5期405-407,共3页
Xinjiang Petroleum Geology
关键词
侏罗纪
三角洲平原相
扇三角洲
新疆
沉积
Hejing Delta Jurassic Delta plain facies Delta front facies Sequence
