豫东地区上古生界含煤岩系构造-岩浆控煤作用样式  

Coal-controlling structure-magmatic style of upper paleozoic coal-bearing series,East Henan province,central China

作　　者：李文前[1] 郭新体[1] 王昆[1] 黄婷[1] 许亚坤[1] 赵明珍[1] 

机构地区：[1]河南省地质矿产勘查开发局第四地质矿产调查院,河南商丘476000

出　　处：《中国矿业》2014年第6期76-82,共7页China Mining Magazine

摘　　要：豫东地区广泛发育上古生界含煤岩系。利用钻井、测井和地震剖面资料,区域研究和局部典型解剖相结合,通过豫东地区褶皱、断裂和岩浆活动对煤层赋存状态的影响研究,建立了构造-岩浆控煤作用模式。豫东地区发育4大类13亚类构造-岩浆控煤样式。大型褶皱隆起和坳陷边界断裂控制了富煤带的发育,坳陷内部褶皱和断裂控制了煤层的赋存状态。同沉积背斜造成煤系地层向轴部抬升变浅和厚度减薄,同沉积向斜轴部煤层埋深增大,反相褶皱对煤层埋深、厚度有较大影响。后期活动断裂未对煤层厚度和形态造成影响,仅造成下降盘煤层埋深增大,反转构造影响到煤层埋深变化或抬升剥蚀。岩浆活动是造成煤层吞噬和变质程度增高的主要原因。Upper Paleozoic coal-bearing series is extensively developed in East Henan province .Using drilling ,logging and seismic data ,combined with regional and a local anatomy typically ,the paper studied the influence on the coal seam occurrence state of fold ,fault and magmatic activities in the east Henan Province , established the structure-magmatic coal-controlling pattern .The study region developed 4 types and 13 subtypes of structure-magmatic coal-controlling patterns .Coal-rich zone development is controlled by the large-scale fold uplift and the boundary fault of depression ,the occurrence of coal seam by folds and faults in depression .Syndepositional anticlines result in the coal seam uplift to shallow with thickness to reduce ,the syncline to enlarge deeper .anti-folds control the deep and thickness of the coal seams .Faults activity affect only to increase the depth of coal seam in hangingwall block and don＆#39;t result in the influence on thickness and the appearance of the coal seam ,anti-structures influence the deep variety or uplift erosion of coal seam . The phagocytosis and high metamorphism degree caused significantly by magmatic activity .

关 键 词：构造-岩浆活动 控煤样式 含煤岩系 豫东地区 

分 类 号：P618.1[天文地球—矿床学]