地质学报2013，Vol.87Issue(1)：91-100,10.
东秦岭上宫金矿成矿流体与成矿物质来源新认识
New Understanding of the Source of Ore-Forming Material and Fluid in the Shanggong Gold Deposit, East Qinling
摘要
Abstract
The Shanggong gold deposit is typical of tectonic altered rock type gold deposit occurring in the Xiong 'er terrane, southern margin of the North China Craton. The isotopic data about this deposit were systematically analyzed and comprehensively summarized, and some new understanding about the source of ore-forming material and ore-forming fluid were achieved. The D-O-C isotopic system shows that the ore-forming fluid derived neither from the Yanshanian magmatic-hydrothermal solution nor from devolatilization of the Taihua, Guandaokou and Luanchuan groups, but from mantle or mantle-derived magma, and it evolved to meteoric water with development of mineralization. The S-Pb-Sr isotope ratios imply a mixing origin of the materials from crust and mantle, with the mantle and Taihua Group likely contributing partial metallogenic materials. In the Indochina period, the collision of the Yangtze and North China plates may result in the strong interaction between the crust and upper mantle, and drive the deep seated fluid to migrate upward. It is under this tectonic background that the Shanggong gold deposit formed.关键词
上宫金矿/成矿流体/成矿物质来源/同位素地球化学Key words
Shanggong gold deposit/ ore-forming fluid/ source of ore-forming materials/ isotope geochemistry z引用本文复制引用
胡新露,何谋春,姚书振..东秦岭上宫金矿成矿流体与成矿物质来源新认识[J].地质学报,2013,87(1):91-100,10.基金项目
本文为全国危机矿山接替资源找矿项目"小秦岭地区金矿床成矿规律总结研究"(编号102kz09y20101)资助的成果. （编号102kz09y20101）
