%0 Journal Article
%T Source,evolution and tectonic setting of the basalts from the native copper mineralization area in eastern Tianshan,Xinjlang<br>东天山自然铜矿化带玄武岩的起源、演化及成岩构造背景
%A Yuan F
%A Zhou TF
%A Zhang DY
%A Fan Y
%A Liu S
%A Peng MX
%A Zhang JD
%A <br>袁峰
%A 周涛发
%A 张达玉
%A 范裕
%A 刘帅
%A 彭明兴
%A 张建滇
%J 岩石学报
%D 2010
%I 
%X The native copper mineralization area is located in Jueluotage tectonic belt, eastern Tianshan, Xinjiang, China. There are 4 main mineralized districts (Shilipo, Heilongfeng, Changchengshan and Dongjianfeng) from west to east. The metallization of native copper occurred in the basalts, amygdaloidal basalts and tuff. Based on the geochemical characteristics, this paper studied the relationship between basalts and mantle plume, the source of basaltic magma, the evolution of magma, and the tectonic setting of diagenesis in the native copper mineralized belt. The results indicated that, there was no connection between the basalts and the mantle plume in the study area, and there wasn't mantle plume magmatism at Carboniferous- Permian in Tianshan area probably. The basalts originated from the depleted lithospheric mantle and were the production of evolutional magma. After built-up, the evolutional basaltic magma did not occur the apparent fractional crystallization and contamination with crustal materials in the magma chamber or during the rising process of magma. Corresponding to the basalts, the high-Mg igneous rocks evolved form the primary magma should exist, and they might be the basic-ultrabasic rocks with Cu-Ni sulphide mineralization in eastern Tianshan area. And these Cu-Ni sulphide deposits had no connection with the mantle plume magmatism probably. The basalts formed at the extensional stage of post-collisional tectonic setting in North Xinjiang. Under the extensional regime, the upwelling of asthenosphere caused the partial melting of lithosphere mantle, and then the primary magma formed.
%K Native Copper
%K Basalts
%K Geochemistry
%K Eastern Tianshan
%K Xinjiang<br>自然铜
%K 玄武岩
%K 地球化学
%K 东天山
%K 新疆
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=CB46DB53A25CAED9F0AFD0181A77B512&yid=140ECF96957D60B2&vid=96C778EE049EE47D&iid=0B39A22176CE99FB&sid=FF58680609C9D068&eid=DEBDB7F30FBA7F9B&journal_id=1000-0569&journal_name=岩石学报&referenced_num=1&reference_num=129