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苏联东部与中生-新生代火山岩带有关的近地表金矿床的岩浆找矿准则,从现有的研究程度来看,具有相当大的普遍意义.大面积的火山岩盖层应看作是区域性的岩浆找矿准则,因为在这个区域范围内及其边缘存在着形成近地表工业金矿床的有利条件.如果存在穿插火山岩盖层的喷出岩体、次侵入岩体、侵入岩体及岩脉等横切岩体,其形成时间又与金矿床很接近,则可作为局部的岩浆找矿准则.这种横切岩体所占面积不太大,把它们划分出来有助于更具体地在火山带的个别地段范围内确定金矿的找矿区.此外,大型花岗岩类侵入的面积本身,只有在外接触带(构造-岩浆接触带)才有可能含矿.在火山岩当中,热液交代蚀变岩石所占面积更小.它们是由于岩浆期后活动而形成的,以青盘
The magmatic prospecting criteria for the NEO-Cenozoic-Cenozoic volcanic belt-related near-surface gold deposits are of considerable general significance from the point of view of existing studies. Large-area volcanic caprocks should be considered as regional Because of the favorable conditions for the formation of near-surface industrial gold deposits in this area and on its fringe.If there are extrusive rocks, sub-intrusive rocks, intrusive rocks and veins Can be used as a local magmatic ore prospecting criteria when the formation time is close to that of the gold deposit.The sectional area of the transversal rock mass is not too large and it is helpful to classify them more specifically in Within the volcanic belt, the prospecting area for the gold deposits is determined within the individual areas of the volcanic belt. In addition, the intrusive area of the large granite intrinsically implies mineralization only in the outer contact zone (tectonic-magmatic contact zone) Rocks are smaller in size, and they are formed as a result of post-magmatic activity, with green plates