确山煤田吴桂桥井田岩浆岩对煤层的影响破坏及接触变质带特征  

Effect of magmatic rocks on coal-seam and its characteristics of contact matemorphic zone in Wu Guiqiao,Queshan coal field

作　　者：袁同星[1] 

机构地区：[1]中国煤田地质总局第一勘探局,邯郸056004

出　　处：《河北建筑科技学院学报》2000年第4期70-73,共4页Journal of Hebei Institute of Architectural Science & Technology

摘　　要：吴桂桥井田喜山期岩浆活动剧烈，多以岩床形式顺层侵入煤层顶底板及煤层中间，对煤层赋存形态、结构、煤质产生较大破坏影响，变质作用以接触变质为主，煤类复杂。接触变质带可进一步划分为岩焦混杂带、天然焦带、焦化煤带、正常煤带。Magmatic rocks action of Himalayan period is pointed .It intrudes apical-bottom plate or midst of coal-seam by sill , affecting the coal quality .Texture and morphology of coal-seam .Because the metamorphism is contact metamorphism .The type of coal is very complicated. The contact metamorphic zone can divide into rock-coke zone , coke zone, coking coal zone and natural coal zone.

关 键 词：岩浆活动 煤层 接触变质 

分 类 号：P618.110.2[天文地球—矿床学]