| 天台地洼型含金银铅锌矿床定位过程的研究 |
| |
| 引用本文： | 李佩兰,余行祯.天台地洼型含金银铅锌矿床定位过程的研究[J].大地构造与成矿学,1990,14(3):229-238. |
| |
| 作者姓名： | 李佩兰 余行祯 |
| |
| 摘 要： | 文中应用微结构物理类比法和成矿实验模拟法,研究了赋于中国东南地洼构造层中含金的银铅锌矿床的定位成矿过程。认为该矿床的形成,可分为两个过程,即大气降水活化、萃取地洼火山岩系中成矿元素的非定位过程和热液爆破角砾化系统定位成矿过程。显示出这类矿床具有:成矿热液是由隐伏深成岩对下渗大气降水的加热,流体源于岩浆水及大气水;近南向高角度断裂制约的双循环体系,以及成矿作用双机制(矿源层中活化、萃取机制和热液爆破沸腾沉淀机制)等特点的多因复成矿床。
|
| 关 键 词： | 定位过程 微结构 类比分析 多因复成矿床 地洼型 浙江天台 |
A RESEARCH ON THE EMPLACEMENT PROCESSES OF DIWA TYPE Au-BEARING Ag-Pb-Zn DEPOSIT |
| |
| Abstract: | This paper deals with the emplacement processes of Au-bearing Ag-Pb-Zn deposit hosted in diwa structural layer of Southeasten China diwa region by anologic method of micro-structural physics and simulant method of metallogenic experiment,The authors suggest that the formation of the deposit includes non-emplacement profess, in which percolating atmospheric water activates and extracts ore-forming elements of volcanic rock series of diwa structural layer, and emplacement mineralization process Of thermal fluid explosion brecciation system.It is shown that such a diwa type Au—bearing Ag-Pb-Zn deposit of Fujiang-Zhejiang style diwa region is a kind of polygenetic compound ore deposit which posses following characteristics: single water source— percobating atmospheric water heated by hidden igneous rocks; two sources of ore-forming thermal fluid—ore—forming elements are derived from the volcanic formation of diwa structural layer and fluid consiste of magmatic water and percolating atmospheric water; dual cycle of ore-forming thermal fluid constrained by NS steep faults; and two mineralization mechanisms—activation and extraction of ore-forming elements of ore-source layer and deposition of ore-forming elements caused by explosion boiling of thermal fluid. |
| |
| Keywords: | emplacement process micro-structure anology polygenetic compound ore deposit diwa type Tiantai Zhejiang province |
| 本文献已被 维普 等数据库收录！ |
|
