摘要
在综述国内外与韧性剪切带有关的脉状金矿床成矿动力学的新近研究成果后 ,根据成矿控矿构造动力学特征及其与成矿流体运移机制、矿物结晶特点的关系认为矿物结晶发生于地震微破裂导致成矿流体压力骤降后的低压力阶段 ,由矿物包裹体压力并按静岩压力梯度推算的成矿深度要明显小于矿床的实际成矿深度。本文提出一种新的成矿深度估算方法 。
The recent research achievement of mineralization structure dynamics about lode gold deposits related to ductile shear zone is first summarized in the paper. According to the relation between the structural pulsation of ore forming and ore controlling structures and the migratory mechanism of ore forming fluid and the characteristics of mineral crystallization, the author considers that mineral only crystals at lower ore forming fluid pressure that appears only just after the happening of a micro seismic fracturing. So the metallogenic depth calculated by means of mineral inclusion pressure divided by lithostatic pressure gradient is smaller than the actual depth. Then, the author puts forward a new calculating way, by which the calculated metallogenic depths are more identical with the fact that the evident ductile deformation has been occurred in quartz of most lode gold deposits.
出处
《地质科学》
CAS
CSCD
北大核心
2001年第3期380-384,共5页
Chinese Journal of Geology(Scientia Geologica Sinica)
