鱼卡煤田羊水河地区含煤地层及煤层特征分析  

Coal-bearing Strata and Coal Seam Characteristic Analysis in Yangshuihe Area,Iqe Coalfield

作　　者：陈磊 

机构地区：[1]青海煤炭地质勘查院,青海西宁810001

出　　处：《中国煤炭地质》2011年第12期21-23,38,共4页Coal Geology of China

摘　　要：羊水河地区位于鱼卡盆地的中部,全区大部为新生界覆盖,通过钻探工程揭示,含煤地层为中侏罗统大煤沟组和石门沟组,含煤地层厚度向西有逐渐变厚的趋势;主要可采煤层M7位于大煤沟组上部,属于厚-特厚煤层,厚煤带分布在鱼卡向斜北翼至Ⅲ线鱼卡背斜南翼,向鱼卡向斜南翼有逐渐变薄的趋势;M5位于石门沟组含煤段底部,属于中-厚煤层,区内厚度变化较大,在中部煤层较薄,向Ⅰ线以西至深部逐渐加厚。通过分析含煤地层的发育规律,恢复中侏罗世沉积期的古地理环境,对区内煤炭资源勘查具有实际意义。The Yangshuihe area is situated in the middle part of the Iqe Basin,largely covered by the Cenozoic System.Drilling engineering has revealed the coal-bearing strata belong to the middle Jurassic Dameigou Formation and Shimengou Formation,gradually thickening westward.Main mineable coal seam M7 is in the upper part of Dameigou Formation,a thick to extra thick coal seam,thick coal zone is distributed on the north limb of the Iqe anticline to line III south limb of the anticline and gradually thinning.The coal seam M5 is in bottom part of Shimengou Formation coal-bearing sector,a medium to thick coal seam,rather large variation of thickness in the area,thin in middle part,gradually thickening to the west of line I to deep part.The analysis of coal-bearing strata development pattern and remodeling the middle Jurassic depositional period paleogeographic environment has practical significance to coal resource exploration in the area.

关 键 词：大煤沟组 石门沟组 主要煤层 羊水河地区 鱼卡煤田 

分 类 号：P618.1[天文地球—矿床学]