鹤岗盆地石头河子组层序地层与聚煤作用  

Analysis on the Sequence Stratigraphy and Coal Accumulation of Shitouhezi Formation in Hegang Coal Basin

作　　者：李柱[1] 邵龙义[1] 李猛[1] 高迪[2] 郑明泉[1] 

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京100083 [2]河南理工大学资源与环境工程学院,河南焦作454000

出　　处：《北京工业职业技术学院学报》2011年第1期11-17,共7页Journal of Beijing Polytechnic College

摘　　要：黑龙江省东部的鹤岗盆地是早白垩世开始形成的众多陆相断陷盆地之一,其主要含煤地层为早白垩世石头河子组。在鹤岗盆地西部矿区,主要通过钻探、测井资料及层序地层学理论等方法对石头河子组进行层序地层和古地理的分析。在石头河子组中识别出冲积扇、辫状河、曲流河、湖泊三角洲及湖泊等5个沉积体系及相应的11种沉积相类型,在此基础上将石头河子组划分为一个三级复合层序,并在层序格架下对其古地理及聚煤作用进行了分析,得出矿区厚煤层主要发育在湖侵体系域(TST)和高位体系域(TST)中的结论。最后提出了今后的勘探工作重点应往矿区的东北部转移的建议。Hegang coal basin is one of Early Cretaceous terrestrial faulted coal basins distributed in the Eastern Heilongjiang Province,China.The Early Cretaceous Shitouhezi Formation is main coal-bearing strata and the western mining area is the main research area in the basin.By use of drilling,geophysical logging and the theory of sequence stratigraphy,the study of sequence stratigraphy and the characteristic of paleo-geography analysis of Shitouhezi Formation in the west of Hegang coal basin has been completed.Five main depositional systems and eleven sedimentary facies were recognized,including alluvial fan depositional system,braided stream depositional system,meandering depositional system,lake delta depositional system and lacustrine depositional system.On the basis of above research one 3rd-order sequence was divided in the Shitouhezi Formation.By the analysis of coal accumulation and paleo-geography in sequence stratigraphic framework of the Shitouhezi Formation,the conclusion that thick coals were accumulated during the trans-gressive system tracts（TST） and high-stand system tracts（HST） in most area of western mining area in the basin was come up.Finally,the author threw out a suggestion that the emphasis of exploration work should be shifted to northeast of basin.

关 键 词：鹤岗盆地 早白垩世 石头河子组 层序地层 聚煤作用 古地理 

分 类 号：P618.1[天文地球—矿床学]