有关卡林型金矿的几点认识

本文讨论了三个问题：①中、美两国的卡林型金矿床除共同点外，在金的存在形式等方面有较明显的差异，这对金的回收率有影响；②卡林型金矿不能与微细粒浸染型金矿等同；③我国卡林型金矿之所以仅分布在扬子地块的西线是由印度洋板块和欧亚大陆板块相碰撞而导致地幔上隆（玄武岩喷发）和水平拉伸（差异性下陷）的结果，从而形成具巨厚沉积物的三叠纪海盆，为卡林型金矿分布在该区打下了基础。

SOME ASPECTS OF UNDERSTANDING OF THE CARLIN-TYPE GOLD DEPOSITS

Three proplems are discussed in this paper: (1) there are significant differences in the existing form of gold in the Carlin-type gold deposits both in China and in the United States, although they share much in common, which would exert a great influence on the recovery of gold; (2) the car-lin-type gold deposits could by no means be regarded as the micfofine disseminated gold deposits;and (3) the restriction of the Carlin-type gold deposits in China to the western margin of the Yangtze block is the result of collision between the Indian Oceah Plate and the Eurasian Plate which let to mantle uprising (basalt eruption) and horizontal tension (differential descending),giving rise to the formation of the Triassic sea basin where there are developed sediments of great thickness.