一、矿区地质概述杨柳坪铂镍矿床位于四川西部松潘地槽东南缘的丹巴复背斜南东侧,康滇地轴北缘之间的银厂沟倾没背斜核部。区域构造以线状紧密褶皱为主,呈北西—南东方向展布。银厂沟背斜是区内最大的褶皱,轴向呈北北西—南南东向,为一种不对称的窟窿背斜。区内超基性岩体都侵入在 I. Geological Overview of the Mining Area The Yangliuping Platinum-Nickel Deposit is located on the south east side of the Danba anticline in the southeast margin of the Songpan Trough in western Sichuan. The Yinchanggou ditch core between the northern margin of the Kangdi-Dian axis is notched. The regional structure is mainly composed of linear tight folds, spreading from northwest to south east. The Yinzigou anticline is the largest fold in the area, with a north-south-west-south-south axis in the axial direction and an asymmetrical cave anticline. Ultrabasic rocks invaded the area