摘要
根据野外地质特征及室内岩石学的综合分析,详细论证了新疆哈密黄山东镁铁超镁铁杂岩体为同源岩浆在深渊经过液态重力分异、硫化物熔离和橄榄石结晶作用之后,在构造—岩浆作用下取同道、占据同一构造空间形成的复式岩体。杂岩体的整个成岩成矿作用主要受岩浆深渊分异作用所控制。
This paper discusses the deep-seated magmatic differentiation and its relation to the rock- and ore-formations of the Huangshandong mafic-ultramafic complex. According to field geological characteristics, mineral compositions and petrochemistry, the author considers the magmatic gravitational liquid differentiation, liquation of sulfide and crystauization of olivines occurred in the abyssal magma chamber in a stable tectonic environment while the parnet magma of Huangshandong complex moved from the upper mantle to the upper crust. They are very important for rock-and oreformations of Huangshandong complex.
关键词
岩浆
杂岩体
成岩
成矿
深渊成异
Xinjiang, Huangshandong, mafic-ultramafic complex, deep-seated magmatic differentiation, rock- and ore-forming process
