%0 Journal Article
%T Spatial Variation Regularity and Ore Potential of S-type and I-type Granites in the Beishan Mountain<br>北山花岗岩S型/I型空间变化规律及含矿性
%A YANG He-qun
%A LI Ying
%A LI Wen-ming
%A YANG Jian-guo
%A ZHAO Guo-bin
%A WANG Xiao-hong
%A <br>杨合群
%A 李英
%A 李文明
%A 杨建国
%A 赵国斌
%A 王小红
%J 地球学报
%D 2009
%I 
%X Granites are well developed in Beishan area, with the outcrop making up nearly 30% of the total area. Over 80% of the granites were formed in the Variscan epoch. According to petrochemical discrimination, the ratio of S-type to I-type granites is 0.33 in the north belt, 0.54 in the middle belt and 0.59 in the south belt respectively. From north to south, the I-type granite gradually decreases whereas the S-type granite increases. The granites in this area constitute important ore-bearing rocks. The typical porphyry Cu deposits are related to the I-type granitic porphyry, and the Cu-Pb combination has to do with the S-type granitic porphyry. The Mo deposits are associated with the I-type granite, which grades off into the S-type granite when the W-Mo combination appears. The W-Sn deposits are mainly linked with the S-type granite. The granites related to gold deposits are S-type and I-type ones, with indistinct specialization.
%K Beishan
%K granite
%K S-type granite
%K I-type granite
%K ore potential<br>北山
%K 花岗岩
%K I型
%K S型
%K 含矿性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=1DF69A47DE80569EC8F859DF61571180&aid=0708514DFA1127937B1187B130209BA9&yid=DE12191FBD62783C&vid=340AC2BF8E7AB4FD&iid=94C357A881DFC066&sid=821800203AD09E7B&eid=06F643376BC2509E&journal_id=1006-3021&journal_name=地球学报&referenced_num=0&reference_num=41