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570火山岩型铀矿床是多方面复杂因素的综合产物,本文主要从火山机构与铀矿化的关系问题的研究出发,去认识570火山岩型矿床的成矿地质特征。一、地质背景概述矿床位于新华夏系隆起区内一个NE向火山喷发岩带的东侧,即福罗山火山盆地NW边缘。该火山盆地以燕山早期复式岩体为基底,盖层为上侏罗系火山岩。这套盖层是由多个火山群构成的复杂的火山机体组成,矿床所处的小福罗山火山群只是其中之一。
570 volcanic-type uranium deposit is a comprehensive product of many complicated factors. This paper mainly studies the relationship between volcanic organization and uranium mineralization to understand the mineralization geological characteristics of 570 volcanic type deposits. I. Overview of Geological Background The deposit is located on the east side of an NE-bearing volcanic rock belt in the uplift of the Xinhuaxia Mound, which is the NW margin of the Fuluo Mountain volcanic basin. The volcanic basin is based on the early Yanshanian composite rock mass and the upper Jurassic volcanic rock. The caprock is composed of a complex volcano body composed of several volcanic groups, one of which is the Little Volcano Group.