摘要
本文重点研究了与火山成因非金属矿床成矿作用关系密切的上侏罗统后城组、张家口组及下白垩统义县组的岩性特征及其含矿性。并详尽研究了区域地质发展演化与火山非金属矿床形成的时空关系，明确指出晚侏罗世及早白垩世时形成的继承性火山盆地及土叠式断陷盆地为沉积火山碎屑岩、火山碎屑岩及熔岩提供了沉积场所，亦为珍珠岩、沸石、膨润土、高岭土、黑曜岩等工业矿床的形成提供了良好的成矿环境。
This paper studied the lithologic characters and ore bearing natures of the Houchen formation of Upper Jurassic series,the Zhangjiakou formation of Upper-Jurassic series and the Yixian formation of Down-Cretaceous and also studied in detail the space-time relation between development and evolution of the regional geology and the volcanic genesis nonmetallic deposits. Inherited volcanic basin and rising fault depression basin formed at Late-Jurassic period and Early Cretaceous period provided the sedimcntary place for sedimentary pyroclastic rock, pyroclastic rock and lava, and also provided the best metallogenic environments for industrial deposits such as perlite, zeolite, bentonite, kaolin and obsidian etc..
基金
国家科技找矿攻关项目
关键词
火山成因
非金属矿床
成矿
地质背景
Volcanic genesis Nonmetallic deposits The East of Daqinshan
