摘要
阿希地区Au元素经历了3次富集,第一次以火山活动起主导作用,奠定了金矿形成的物质基础;第二次以火山期后热液活动起主导作用,形成了含金硅化岩带(区)或浅成低温热液硅化岩型金矿;第三次以构造作用起主导作用,形成了富金矿床.
Axi is located in Tu-La-Su fault basin of Borokonu Early Paleozoic island arc zone in North Tianshan. Gold-guided exploration surrounding Axi gold deposit demonstrates that three processes are involved during the enrichment of gold in Axi region. The first one is mainly associated with volcanic activities which supplies source material for gold deposit. The second one is dominated by post-volcanic hydrothermal activities, resulting in formation of gold-bearing silicified zone or 揼old deposit of epithermal silicified rock types? The third is dominated by structural activities, with formation of gold-enriched deposits. It is pointed that attentions should be paid on looking for nearly NS, NW and NNW trending faults within the silicified zones of Dahalajunshan Formation, especially on their cross-cutting localities with the main basal fault.
出处
《新疆地质》
CAS
CSCD
2002年第3期224-228,共5页
Xinjiang Geology
