鲁西苍峄铁矿带西延隐伏区BIF型铁矿成矿预测

Metallogenic Prediction of BIF Type Iron Deposit in Hidden Area in the Western Extension of Cangyi Iron Ore Belt in Western Shandong Province

摘要:

山东省BIF型铁矿分布较为广泛，其中鲁南地区苍峄铁矿带是全省重要的BIF型铁矿带之一，该含矿建造赋存于新太古代泰山岩群山草峪组中。本文在对苍峄铁矿带中典型矿床进行剖析的基础上，对铁矿带西延隐伏区进行了分析研究，认为该隐伏区BIF型铁矿成矿地质条件优越，且该区高磁异常较为明显。通过对该类型铁矿矿床成因及找矿预测模型研究，并综合该区地质特征、物探异常特征和铁矿成矿规律等要素共圈定6个铁矿找矿靶区，即B类找矿靶区为涝坡南找矿靶区、马头西找矿靶区、山湾东找矿靶区、东凫山北找矿靶区、胡埠找矿靶区；C类找矿靶区为张庄找矿靶区；本次研究工作为该区今后铁矿勘查工作提供了依据。

Abstract:

BIF type iron deposits are widely distributed in Shandong province, and Cangyi iron belt in southern Shandong province is one of the important BIF type iron belts. The ore-bearing formation occurs in Shancaoyu formation of Neoarchean Taishan group. Based on the analysis of typical deposits in Cangyi iron belt, hidden area in the western section of the iron belt has been studied. It is considered that geological conditions of BIF type iron ore in hidden area are superior, and the high magnetic anomaly is obvious in the area. Through study on the origin and prospecting prediction model, integrating geological characteristics, geophysical anomaly characteristics and iron metallogenic regularity of the area, 6 iron ore prospecting targets have been delineated. Class B prospecting target areas are in the south of Laopo prospecting target area, the west of Matou prospecting target area, the east of Shanwan prospecting target area, the north of Dongfushan prospecting target area and Hubu prospecting target area. Class C prospecting target area is Zhangzhuang prospecting target area. This research work will provide a basis for iron ore exploration in the future in this area.