Earth Science Frontiers ›› 2011, Vol. 18 ›› Issue (1): 95-101.
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Abstract:
Insitu melting (remelting) not only results in formation of granite, but also in enrichment of subgroup elements to form different types of oredeposits. The subgroup elements include oxyphiles and sulphophiles, and thus the related orefield can be divided into three types, i.e. of oxyphiles, of sulfophiles and of both composited. The first type that occurred in granite body with the ages similar to that of the host rock is controlled by magmatic differentiation and its appearance depends on the erosion depth of the rockbody. The occurrence of the second type generally with different distance from the source granite body is controlled by both the depth of protuberant magma interface (MI) and the attitude of orecontrolled structure. The formation of the third type is related to multiple melting (remelting), which is characterized by oxyphile (especially uranium) oredeposit within granite and oredeposit of sulfophiles in the surrounding of the rock body.
Key words: granite;subgroup elements, insitu melting, types of orefield
CLC Number:
P611
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https://www.earthsciencefrontiers.net.cn/EN/Y2011/V18/I1/95