摘要
韧性剪切带中金成矿的研究已涉及到不同方面。目前的研究成果认为剪切带有利于金富集成矿有四个方面:(1)剪切带作为金由深至浅迁移的通道;(2)剪切作用形成了有利于金富集的构造;(3)剪切过程有利于水—岩反应,形成有利于金富集的物理—化学环境;(4)剪切应力可使低应力载金矿物发生富集作用。此外,剪切带中常、微量组分的定量研究以及剪切作用的实验模似研究,是当前研究剪切带中金成矿机理的重要方面。
Why does gold deposit occur in the ductile-brittle shear zone? Basing on present researching results the reasons are as follows : (1) Shearzone can be as a channel through which gold can be mobile from deep to shallow; (2) During shearing actions gold is reactived from original rocks and enriched in some favorable places; (3) Water-rock reaction formed a environment for gold settling and (4) Shear stress forced gold and bearing-gold minerals into shear failures. The composition changes of rocks in shear zone and experimental study are two important aspects for tracing the mechanism infuture.
出处
《大地构造与成矿学》
EI
CAS
CSCD
1995年第4期375-381,共7页
Geotectonica et Metallogenia
