北京西山早、中侏罗世煤田岩浆活动特征及其与聚煤作用的关系  

Features of magmatic activities and its relations to coal-accumulating in the early and middle Jurassic coal fields of the Western Hills, Beijing

作　　者：杨荣丰[1] 张可能[2] 张鹏飞[3] 刘钦甫[3] 

机构地区：[1]湘潭工学院土木工程系,湖南湘潭411201 [2]中南大学地学与环境工程学院,湖南长沙410083 [3]中国矿业大学北京校区资源开发工程系,北京100083

出　　处：《煤炭学报》2003年第2期136-139,共4页Journal of China Coal Society

摘　　要：对北京西山岩浆活动和聚煤作用特征的研究表明,早、中侏罗世岩浆活动与窑坡组聚煤作用关系密切,早侏罗世的岩浆活动形成火山盆地,为聚煤提供基底并引起基底隆起;窑坡早期的岩浆活动,喷出火山碎屑物质降落于湖泊,使湖水变浅成煤;煤系形成后的岩浆侵入,产生接触变质,煤层受到破坏和改造.The features of magmatic activities and coalaccumulating in the early and middle Jurassic coal fields of the Western Hills in Beijing are studied. The result shows that the magmatic activities were closely related to the coalaccumulating. The volcanic eruption formed the basement for coalaccumulating and caused the swelling in the early Jurassic. The pyroclastic material fell down to the lake and formed coal layer during lower part of the Yaopo Formation. The magmatic intrusion metamorphosed and destroyed the Coalbearing formation after Yaopo Formation.

关 键 词：北京 侏罗世 煤田 岩浆活动 聚煤作用 窑坡组 

分 类 号：P618.11[天文地球—矿床学]