摘要
The Jinshan gold deposit consists of gold\|bearing ultramylonite and gold\|bearing quartz vein ores. The Rb\|Sr isochron age of fluid inclusions in quartz from quartz veins is the same as that of the gold\|bearing ultramylonite, suggesting that both the types of orebodies were formed simultaneously in the Caledonian period, in the range 406-409 Ma. REE patterns and sulfur, lead, carbon, hydrogen and oxygen isotope data, as well as the composition of fluid inclusions, have shown that the ore\|forming fluids were derived from formation water, and the ore\|forming materials came from the gold\|hosted rocks. The Jinshan gold deposit occurring in a Caledonian brittle\|ductile zone in metamorphosed microclastic rocks owes its origin to Caledonian reworking processes.
The Jinshan gold deposit consists of gold\|bearing ultramylonite and gold\|bearing quartz vein ores. The Rb\|Sr isochron age of fluid inclusions in quartz from quartz veins is the same as that of the gold\|bearing ultramylonite, suggesting that both the types of orebodies were formed simultaneously in the Caledonian period, in the range 406-409 Ma. REE patterns and sulfur, lead, carbon, hydrogen and oxygen isotope data, as well as the composition of fluid inclusions, have shown that the ore\|forming fluids were derived from formation water, and the ore\|forming materials came from the gold\|hosted rocks. The Jinshan gold deposit occurring in a Caledonian brittle\|ductile zone in metamorphosed microclastic rocks owes its origin to Caledonian reworking processes.
基金
ThisresearchprojectwasfinanciallysupportedbytheStateClimbingProjectA 30andtheKeyGoldProjectunderChineseA cademyofSciences.
关键词
金矿床
江西
成矿时代
成矿作用
流体包裹体
石英
超磨棱岩
Jinshan gold deposit
gold\|bearing siliceous ultramylonite
gold\|bearing quartz vein
Caledonian period
reworking genesis
