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引言 早元古代的布罗肯希尔Pb-Zn-Ag矿床是世界上最大的一个金属硫化物聚集体,它经历了多次同期的高级变质事件和极强烈的变形作用。这些构造作用已使矿体和围岩的某些原生结构及其矿物学特征消失。关于布罗肯希尔矿床的成因已争论了一个世纪,本文提出:成矿流体是来自交代地幔,而不是来自火山流体(Stanton,1972 a、b)、建造水(Johnson和Klingner,1975)或向下对流的海水(Russell,1983),并试图以此加入争论。 海底喷气矿通常都是与具有成因意义的地质特征相关联的(例如,黑矿型矿床与流纹岩穹丘有关,塞浦路斯型矿床与蛇绿岩有关)。本文采用了这种研究问题的办法。Russell(1983)
Introduction The Early Cretaceous Broken Hill Pb-Zn-Ag deposit is the largest metal sulfide aggregate in the world. It experienced many advanced metamorphic events and extremely intense deformations over the same period. These tectonic processes have led to the disappearance of some of the primary structures and their mineralogical characteristics of ore bodies and surrounding rocks. The origin of the Broken Hill deposit has been debated for a century. This paper proposes that the ore-forming fluid is derived from the mantle rather than from volcanic fluids (Stanton, 1972a, b), building water (Johnson and Klingner, 1975) or Conveying down the sea (Russell, 1983), and try to join the debate. Submarine gas jets are usually associated with geologically significant geological features (eg, the black ore deposits are associated with rhyolite domes, and the Cyprus deposits are associated with ophiolites). This article uses this approach to research problems. Russell (1983)