摘要
褶皱控矿,是地质找矿勘探中经常能碰到的问题,尤其是背(向)斜对内生热液、变质改造型矿床的控矿作用。 我国许多大中型矿床是以褶皱的形式赋存。这些矿区的勘探和不断开发,在一定意义上看,就是对褶皱控矿规律本身的揭示和研究。许多矿山在开发过程中,逐渐突破了找矿勘探阶段非褶皱控矿这一认识之后,才使矿床由小变大,储量大增,最终才搞清了矿床的构造形态。 沉积矿床和其褶皱之间虽也存在着翼部、鞍部矿物质流动造成鞍、翼厚度等变化,但一般地说并不改变原有沉积的基本特征。
It is well-known that the fold structure, specially anticline, plays an important role in the controll-ore action of endogenic hydrothermal or/and sedimen-tal reform-type ore deposits. whereas, just only on the both limb of fold, thedifference of "form-mechanical" nature is strong and forms abnormal fold, which can creat complex and variable control-ore nature. On the basis of summary geo-logical practice of a number of mine and exploration area, author advises the ore body on the overturned limb is of intermitity along strike and dip, the minera-lizational depth on this limb is more than normal one, the mineralization on hinge zone or plunging crown of this fold is of collapsity and their commonlity of control-ore nature. In the meantime, author points out yet that must pay attention to a few question in prospection and exploration.
出处
《甘肃地质》
1991年第12期89-96,共8页
Gansu Geology
