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为了具体确定火山机构,就必需进行较为详细的制图工作.从实践来看,火山机构制图一般应分为四个阶段:全面详查全面了解区内地质、岩石和构造的基本情况,查明和确定火山机构的某些主要标志.在新区工作时,应在判读卫星照片、航空照片和分析已有地质图件及资料的基础上进行.对一些环状、半环状地形,环状岩脉或断裂,集块岩、火山角砾岩、熔结角砾岩、角砾熔岩分布区,次火山岩分布比较密集的地带,环状矿化蚀变等都应予以
In order to specify the volcano body, it is necessary to carry out more detailed mapping work.From practice, volcano body mapping should generally be divided into four stages: a comprehensive detailed investigation of the comprehensive understanding of the basic geology, rock and structure in the region to identify and Determine some of the major signs volcanic institutions in the work area, should be based on the interpretation of satellite photos, aerial photographs and analysis of existing geological maps and information on the basis of some of the annular, semi-circular topography, annular dikes Or faults, conglomerates, volcanic breccias, sinter breccias, breccia lavas, sub-volcanic rocks more intensively distributed, cyclic mineralization alterations should be