山东胶北隆起硼区域地球化学及成矿远景区预测OA

Boron mineral is a core and critical non-metallic mineral essential for the development of strategic emerging industries,as well as a crucial yet severely scarce mineral resource in China.The Jiaobei Uplift exhibits favorable geological conditions for boron mineralization,with significant metallogenic prospects and exploration potential.Therefore,studying the geochemical characteristics of boron in this region is of great importance.Based on 1:200,000 scale stream sediment survey data from the Jiaobei Uplift,this study statistically analyzed boron geochemical parameters in stream sediments,compiled boron geochemical maps,and predicted prospective areas for boron mineralization,providing theoretical support for subsequent boron exploration and assessment in Shandong Province.The results indicate that the distribution areas of the Paleoproterozoic Jingshan Group and Fenzishan Group are enriched in boron within the Jiaobei Uplift.The Zhanggezhuang Formation and Zhujiakuang Formation of the Fenzishan Group,along with the Lugezhuang Formation of the Jingshan Group,are identified as the three main target horizons for boron exploration in the study area.A total of 30 boron geochemical anomalies were delineated,and 10 prospective metallogenic areas were preliminarily identified.Among these,four are predicted to be ascharite-type(magnesium borate)deposits,three are ludwigite-type(iron-magnesium borate)deposits,and three are composite ascharite-ludwigite-type deposits.