摘要
桂西北高龙微细浸染型金矿床位于广西田林县高龙乡。含矿硅质岩与热水沉积作用有关,而非前人认为的断裂破碎热液硅化交代岩。矿床的典型地质特征以及地球化学特征显示该矿床具有典型的同生沉积准同生成岩的成因特征,矿床属同生沉积型,而不是前人认为的后生热液改造型。矿床的形成与右江沉积盆地演化关系密切,含矿流体为以大气降水为主要补给源的深循环盆地卤水和与沉积物发生了同位素交换的埋藏古海水,流体的运移方式以压实驱动流为主,含矿流体主要以沉积喷流方式成矿。
Gaolong microdisseminated gold deposit is located in Tianlin County in northwestern Guangxi Province. The immediate host siliceous rocks are of hydrothermal sedimentary origin, not of fault breakinghydrothermal silicified origin. The characteristics of geology and geochemistry of deposit indicate that it is of typical synsedimentarysyndiagenetic characteristics and that the deposit is syngenetic in origin, not later hydrothermal deposit. Gold mineralization in the studied area is closely related to the evolution of the Youjiang basin. The fluids were predominantly derived from deep circulated basin brines, recharged by meteoric water, and ancient seawater. The transporting pattern of fluids is compaction driving. The ores were formed by sedimentary exhalation.
出处
《吉林大学学报（地球科学版）》
EI
CAS
CSCD
北大核心
2003年第3期290-295,共6页
Journal of Jilin University：Earth Science Edition
基金
国家自然科学基金资助项目(49872038)
