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研究区地处滇西三江地区,是我国独具特色的多金属矿集中产出区,地质构造复杂多样,火山活动强烈,分布着一系列晚古生代-中生代火山岩,以基性火山岩为主。洛吉组玄武岩是三江口基性火山岩带的重要组成部分,该带为甘孜-理塘洋脊型火山岩-蛇绿岩带的南延部分(莫宣学等,1993),1∶25万中甸县、贡山县幅区域地质调查报告中对三江口基性火山岩带的火山喷发
The study area is located in the Sanjiang area of western Yunnan. It is a unique polymetallic ore concentrate production area in China. The geological structure is complex and diverse. Volcanic activity is intense. A series of late Paleozoic-Mesozoic volcanic rocks are distributed, mainly consisting of basic volcanic rocks. The Luoji Formation basalts are an important part of the Sanjiangkou basic volcanic belt, which is the southern extension of the Garze-Litang ridge-type volcanic-ophiolite belt (Mo Xuan Xue et al., 1993) Diandian, Gongshan County regional geological survey report on the volcanic eruption of the Sanjiangkou basic volcanic belt