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陈国达教授创立的地洼学说在寻找铀矿及研究铀成矿学中,得到广泛的应用。它不仅适用于大区域铀成矿构造环境和成矿预测的研究,在小区域及矿床研究中,同样用之有效。 近十年来,我们运用地洼理论找铀矿工作中,获得二个成功的实例。通过二个矿区铀成矿学的研究,对矿区铀成矿作了大比例的预测,经生产部门验证,在预测范围内找到了新矿体或新的富矿段,从而明显地增加了储量,扩大了矿床规模。 从地洼观点研究铀成矿学,把铀矿床的成因类型,分为内生、外生和复生(多因复成)三大类。各大类中又细分为若干亚类型。依槽—台—洼的地壳演化观点,划分铀成矿时代,得出各国的铀矿床,均在各大地构造演化阶段的中晚期形成,但以地洼阶段中晚期形成的铀矿床最多。铀矿床的空间分布,突出地集中在不同时代的地洼区内,其中包括晚元古代地洼区(国外叫原地洼区或原活化区)。
The theory of Diwa established by Professor Chen Guoda is widely used in the search for uranium deposits and in the study of uranium mineralization. It is not only suitable for studying uranium metallogenic tectonic environment and metallogenic prediction in a large area, but also effectively used in small area and deposit research. In the past ten years, we have used the theory of Diwa to find uranium mines and got two successful examples. Through the study of uranium metallogeny in the two mining areas, a large proportion of uranium mineralization in the ore district has been predicted. After verification by the production department, a new ore body or a new rich ore section has been found within the predicted range, thus obviously increasing reserves, Expand the size of the deposit. Uranium mineralization is studied from the perspective of geo-depression, and the genetic types of uranium deposits are divided into three major categories: endogenous, exogenous and reactivated (mostly due to complex formation). Each category is subdivided into several subtypes. According to the evolutional view of the crust-platform-depression crust, the classification of uranium metallogenic age shows that uranium deposits in various countries are formed in the middle and late stages of the tectonic evolution stages of the major terrestrial formations, but the uranium deposits formed in the middle and late stages of Diwa stage are the most. The spatial distribution of uranium deposits is prominently concentrated in the diwave areas of different epochs, including the Late Proterozoic depression (foreign-origin depression or original activation zone).