摘要
神农架冰洞山铅锌矿形成于震旦纪陡山沱组四段第三岩性层中部,主要控矿岩性为垮塌堆积的白云岩角砾岩,而含矿元素则赋存于浅水潮坪弱动荡环境沉积的中厚层状藻纹层微晶白云岩之中,明显具两个成矿时期,早期铅锌元素由陆源搬运于海水并被藻类捕获而沉积于白云岩之中,晚期由于地下热水作用,形成含铅锌元素的热卤水溶液,这些溶液在地壳承压迁移作用下,充填于白云岩角砾岩孔隙和其它可存储空间之中,通过长期积淀富集而形成工业矿床。
Bingdongshan lead-zinc deposit formed in the middle of fouth Member of Sinian Doushantuo Formation in Shengnongjia,the main ore controlling lithology is dolomite breccia,while the occurrence of ore-bearing elements are weak in the shallow tidal flat turbulent environment of the thick laminar algal dolomicrite,obviously with the two forming period.The early lead-zinc elements captured by algae,remove from the land-based sources in sea water,deposit in the dolomite.The late lead-zinc elements due to underground hot water,form lead-zinc hot brine solution.These solutions fill pores in dolomite breccia and other available storage space among the enrichment by the formation of long-term accumulation of industrial mineral deposits.
出处
《资源环境与工程》
2010年第6期631-634,共4页
Resources Environment & Engineering
关键词
冰洞山
铅锌矿床
陡山沱组
白云岩角砾岩
垮塌
古地理模式
Bingdongshan
lead-zinc deposit
Doushantuo Fm
dolomite breccia
collapse
paleogeography model
