苏丹红海州地区2C区块地球化学特征及找矿潜力预测

Geochemical Characteristics and Prospecting Potential Prediction about 2C Block in the Red Sea State of Sudan

摘要: 在对苏丹红海州地区2C区块开展1:25万水系沉积物测量的基础上，从对元素的富集和离散特征、元素组合特征、组合异常分布特征进行了研究，圈定了综合异常，并对综合异常进行分类。研究发现以Au为主的Au、As、Sb(W)组合异常，具有较大的成矿潜力。区内断层破碎带、中深成侵入岩利于成矿及伴生元素的活化、迁移、富集，断层破碎带是金、铜、镍、铬多金属矿的有利空间，中深成侵入岩是主要的成矿围岩。根据异常分布特征，结合成矿地质条件，预测了三处找矿远景区，指明了后续找矿方向。

Abstract: Based on the 1:250,000 waterborne sediment survey of the 2C block in the Red Sea state of the Sudan, by studying the enrichment and discrete characteristics of elements, the characteristics of elements combination, and the characteristics of combination anomaly distribution, this study found that Au, As, and Sb(W), which are mainly Au, have abnormal combinations, and have large metallogenic potential. Fault fracture zones and mid-to-deep intrusive rocks in the region are conducive to the activation, migration and enrichment of metallogenic and associated elements. Fault fracture zone is a favorable space for gold, copper, nickel and Chromium metalloids, and mid-deep intrusive rocks are the main metallogenic surrounding rocks. According to the abnor-mal distribution characteristics and combined with metallogenic geological conditions, three ore-seeking scenic spots are predicted, and the direction of subsequent ore-seeking is indicated.