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麦根、沙利文、霍华兹帕斯和麦克阿瑟河等大型页岩中的层控Pb-Zn-(Cu-Ba)矿床,以及世界许多地区类似但较小的矿化,在成因方面已引起相当大的争论.这些矿床基本上由碳质和钙质页岩中的Fe-Pb-Zn硫化物组成,并常与Ba和Ca的硫酸盐有关.与火山作用没有任何直接的联系,但是在空间和时间上可能与火山岩或浅成岩接近.所有的矿床完好地保存明显的沉积特征,并与容矿地层完全整合和互层.仅有沙利文矿床的下面有明显的蚀变带,尽管局部有裂隙的下盘和有限的上盘蚀变现象并非罕见.在大多数矿床中有过大量的生物活动.这一点已为异养生
The stratiformly controlled Pb-Zn- (Cu-Ba) deposits in large shales such as Wheaton, Sullivan, Howard Falls and MacArthur and similar but minor mineralization in many parts of the world have been attributed to genetic causes Considerable controversy, these deposits consist essentially of Fe-Pb-Zn sulphides in carbonaceous and calcareous shales and are often associated with sulfates of Ba and Ca. There are no direct associations with volcanism but at Space and time may be close to volcanic or diagenetic deposits, all of which are well preserved with distinct sedimentary features and are fully integrated and interbedded with the ore-hosting strata. There is only a clear alteration of the belt below the Sullivan deposit, It is not uncommon for fractured underplates and limited up-wall alteration to occur, with significant biological activity in most of the deposits.