新疆阿希金矿区古火山机体及其控矿作用

新疆伊犁盆地南北两侧广泛分布有早石炭曲中基性－中酸性火山岩。通过对盆地北缘阿希金矿区下石炭统大哈拉军山组火岩、次火山岩岩石学、岩相学及古火山机体的详细研究，探讨了古火山机体和次火山岩相对金矿床的控制作用。认为沿古火山机体发育的环状断裂穿其深渊并与区域线性构造复合的部位是有利的构造条件，火山活动晚期侵位于火山 是成矿的重要围岩。

PALEO-VOLCANIC APPARATUS AND ITS CONTROLLING ON MINERALLIZATION IN AXI GOLD FIELD OF XINJIANG

Intermediate-basic and intermediate-acidic volcanic rocks of lower Carboniferous are widespread along both northern and southern sides of Ili basin of Xinjiang. anthologic, petrographic and paleovolacanic apparatus study of volcanic and subvolcanic rocks of Dahalajunshan Formation in Axi mining district on the northern side of Ili basin, and study of paleovolcanic apparatus are conducted to probe into how gold deposits are controlled by paleovolcanic apparadus and sub-volcanic rock facies. The positions where ring faults around and deeply cutting through the paleovolcanic apparatus intersect with regional tectonic lineations are favorable for gold deposits. The mother rocks of gold deposits are subvolcanics which formed at the later stage of volcanism around the volcanic conduits.