摘要
桐柏地区银多金属矿形成于北秦岭造山带燕山晚期伸展构造环境下前陆盆地发生阶段。成矿物质主要来源于地层建造。赋矿构造为层间剥离断层及顺层正断层。燕山晚期花岗岩、花岗斑岩为成矿的热动力条件 ,并提供了部分成矿物质。矿床具一般热液矿床的特点 ,形成于天水一岩浆循环系统。
It is suggested that the silver polymetallic deposit in North Qinling Orogenic Belt formed during the forehand basin forming period in the strech environment of late Yanshan period. The ore-forming materals are mainly from the stratigraphic formatiom. The ore-bearing structures are the interlayer-sreiping faults and bedding normal faults. The granites and granite-porphyry of late Yanshan provided with the ore-forming thermal condition and part of ore-forming materals. The deposit was formed in the system of the rainwater cycling in the magma.
出处
《前寒武纪研究进展》
2002年第3期174-178,共5页
Progress in Precambrian Research
基金
中国地质调查局"华北地台成矿规律和找矿方向综合研究项目"(编号 :2 0 0 110 2 0 0 0 38)
