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铀成矿场的定位明显受构造地球化学场制约。根据矿场尺度不同,可划分为区域成矿构造地球化学场和局部成矿构造地球化学场。前者控制着成矿区(带)或矿化集中区的分布,后者控制着矿田、矿床的产出。 本文以某矿域为例,对铀矿化集中区的构造地球化学类型作尝试性的划分和探讨。 根据铀矿化集中区的区域成矿构造和成矿元素组合特点,某矿域初步划分为以下构造地球化学类型: Ⅰ 大型构造网结——亲氧成矿元素组合构造地球化学类型。 Ⅱ、深大断裂夹持楔——亲硫、亲氧成矿元素组合构造地球化学类型。 Ⅲ、大型构造过渡带——亲硫、亲铁、亲氧多组分成矿元素组合构造地球化学类型。 Ⅳ、边缘坳陷构造活化带——亲硫成矿元素组合构造地球化学类型。
The localization of uranium metallogenic sites is obviously constrained by tectono-geochemical field. According to the different scale of the mine, it can be divided into regional metallogenic tectono-geochemical field and local ore-forming tectonic geochemical field. The former controls the distribution of ore-forming areas (belts) or mineralized areas, while the latter controls the output of ore fields and deposits. Taking a certain area as an example, this paper attempts to make a tentative division and discussion on the tectonogeochemical types of uranium mineralization areas. According to the characteristics of regional metallogenetic structure and metallogenic element assemblages in a uranium mineralization area, the ore field is initially divided into the following tectono-geochemical types: Ⅰ large structural network knot-oxygene mineralization tectono-tectonic geochemistry type. Ⅱ, the deep fault-holding wedge - pro-sulfur, oxy-oxygen mineralization tectonics geochemical types. Ⅲ, large tectonic transition zone - pro-sulfur, pro-iron, oxygen-rich multi-component ore-forming combination of tectonic types. Ⅳ, tectonic activation zone in the marginal depression, sulfur-bearing metallogenin, tectono-geochemical type.