鲁西地区矽卡岩型铁矿成矿地质特征及找矿标志

鲁西地区是我国矽卡岩型铁矿的重要产出地之一,在早古生代碳酸盐岩与早白垩世侵入岩接触带常分布有矽卡岩型铁矿。该类型铁矿主要集中分布于淄博、莱芜、济南和齐河-禹城地区,总体表现为"地层、岩体和构造"联合控矿的特征。本文通过对淄博、莱芜、济南和齐河-禹城4个矽卡岩型铁矿富集区的地质背景、成矿地质特征及控矿要素进行了总结和探讨,分析其地层、岩浆岩、构造、围岩蚀变与地球物理特征,提出了研究区的找矿标志。

Geological Characteristics and Prospecting Criteria of Skarn Type Iron Deposits in Western Shandong Province

Luxi area is one of the important producing areas of skarn type iron deposit in China.The contact metasomatic (skarn type) iron deposit is often distributed in the contact zone between early Cretaceous intrusive rocks and Mesozoic intrusive rocks. This type of iron deposit is mainly distributed in Zibo, Laiwu, Ji''nan and QiheYucheng regions, which is characterized by "strata, rock mass and structure" combined ore control. Through summarizing and discussing geological background, metallogenic geological characteristics and ore control factors of four skarn type iron deposits enrichment areas in Zibo, Laiwu, Ji''nan and QiheYucheng, the strata, magmatic rocks, structures, wall rock alteration and geophysical characteristics have been analyzed, and the ore prospecting criteria of the study area has been put forward.