摘要
流体形成演化是当前地球科学的前沿领域，但构造-流体-成矿作用的研究仍很薄弱。文章通过对流体性质的分析，探讨了地质作用过程中流体演化、韧性剪切带中流体演化与矿化的关系。提出当韧性剪切转为脆性剪切时产生的扩容，导致深源流体发生骤然减压冷却，并与地壳浅部流体混合，发生与围岩的交代反应而形成热液蚀变。成矿作用发生于深源流体与上地壳流体的“混合”阶段及流体与围岩交代反应阶段。
The evolution of fluid plays important roles in the process of ductile shearing and gold mineF4liza-tion. 0n the basis of fluid properties, the evolution of fluid in the geological processes and ductile shearzone, and their relati0nships with gold mineralizati0n are discussed- The spatial extension, while duc-tile shearing turned into brittle shearing, led to deep-derived-fluid Cooling, mixing with upper crustalmeteoric fluid, and metasomatizing with wallrocks. Mineralizati0n occurred in the stage of fiuid ccol-ing and metasomatism.
出处
《地质地球化学》
CSCD
北大核心
1997年第3期58-63,共6页
Geology-Geochemistry
基金
中国博士后科学基金
