摘要
八家子铅锌矿位于虹螺山—五指山成矿带的南端,矿床赋存于长城系高于庄组及大红峪组中。本文通过130件硫同位素资料对全矿区的硫同位素特征,不同成矿阶段,不同组构以及不同矿物的硫同位素组成进行了系统研究。全区δ^(34)S分布范围为+16.4‰—-19.1‰,δ^(34)S(?)s为2.16‰,硫同位素具有水平分带及垂直分带特征。同时还对矿床的硫同位素平衡温度和平衡程度进行了计算和估计,并结合包体测温结果确定矿床的成矿温度介于低温到高温之间,主成矿期温度以中温(300—400℃)为主。上述研究表明,本区的硫同位素组成特征是沉积岩和岩浆热液共同作用的结果,成矿作用应以岩浆热液作用为主。
Bajiazi lead-zinc deposit lies in the eastern end of HongluOshan-VVuzhishan deposit zone and presents in Gaoyuzhuang Fm. and Dahongyu Fm. of changcheng System. On analysis of the δ^(34)S~_(ΣS) characters of different ore members, compositions and varies minerals as well as that of the whole mining area, the authors proposed that the sulfur isotope of Bajiazi mining area is of horizantal and vertical zoning characters, meanwhile they counted and estimated the equilibrium temperature and degree and concluded that the mineralizing temperature is between high and low,and that of the main mineraiizing period is middle (300-400℃). All above shows that the sulfur isotope composition charater is the result of sedimentation and magmatic hydrothermal process, and the latter one is main.
出处
《国土资源》
1990年第2期137-148,共12页
Land & Resources
关键词
八家子
铅锌矿
硫同位素
塔式效应
热液作用
Bajiazi lead-zinc deposit
Sulfur isotope
Tower effect
Hydtothermal process
