Ore controlling regularity and prospecting potential of BIF type iron deposits in western Shandong,China
Western Shandong region is an important iron ore concentration area in eastern China,with superior geological conditions for Banded Iron Formation(BIF)type iron ore deposits.Based on a comprehensive study of the geological background,geophysical characteristics and spatial distribution characteristics of BIF type iron ore deposit in this region,the authors systematically study the characteristics of ore-bearing strata,the iron ore control regularity,structural control regularity,magmatic rock control regularity and geophysical anomaly indica-tion regularity.This research shows that the formation of BIF type iron ore in this area is Neoarchean,and there are many iron ore hosting horizons,such as Yanlingguan Formation,Shancaoyu Formation,Liuhang Formation of Taishan Group and Yandian Formation of Jining Group are the main ore-bearing horizons.The structure is one criti-cal factor during the metallogensis of BIF iron ore,especially the enrichment of iron ore in the synform structure is most significant.Magmatic rock activity plays an important role in providing the source of ore-forming materials in the early stage and reforming the ore body in the late stage.The geophysical anomaly,gravity and magnetic anomaly etc.,have a significant effect on the exploration of BIF iron ore.Twenty target areas for iron ore prospect-ing including Hanwang and Cangyi iron ore belt,Dongping-Wenshang and Jining north iron ore belt,have been delineated within the area,indicating the enormous potential for BIF-type iron ore exploration in the western Shandong region.The research proposes that the exploration and development direction of BIF-type iron ore deposit is still the preferred area for exploration and development in the deep and edge areas of existing deposits.It is an important direction for future BIF-type iron ore exploration work in western Shandong Province with application of deep drilling for exploration and opening up new prospecting spaces in hidden and low anomaly areas.
banded iron formationiron depositsmetallogenic regularityexploration directionwestern ShandongShandong Province
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