山东省栖霞地区金矿稳定同位素特征及其地质意义

STABLE ISOTOPIC FEATURES AND ITS GEOLOGICAL SIGNIANCES OF THE GOLD DEPOSITS IN QIXIA AREA,SHANDONG PROVINCE

摘要:

本文研究了栖霞地区金矿床的硫、氧、铅等稳定同位素组成特征，指出区内金矿的成矿物质主要来源于胶东群地层，成矿热液是以变质热液为主、有岩浆热液和大气降水参与的混合热液；成矿温度在１６０℃—３０５℃范围内，属中低温热液矿床。金矿床的铅—铅模式年龄为８００．１—１２００．８８Ｍａ。

Abstract:

This paper prssents the features of sulfur,oxygen and lead stable istopic compositions of the gold deposits in the qlxia area,indicatiog that the ore-forming materiais are mainyderived from the Jiaodong group,Hydrothermal ore-forming slutions are predominantly metamorphic one and subordinately magmatic one with one from heated underground water which originated form meteoric water.The temperature of mineralization ranges between160 and 305℃,indicating that the deposits belong to the mesothermal-epithermal ...