一、概述本文所述的铁矿区,位于祁吕贺山字型前弧东翼与新华夏系多字型构造的复合部位(图1).矿区几乎全部被黄土复盖,其厚度最大达一百余米.下伏之基岩除部分中上石炭统角页岩、石英岩和少量中奥陶统碳酸盐类岩石外,主要是燕山期中偏碱性的 I. Overview The iron ore zone described in this article is located in the complex part of the east wing of the Qilu He Mountain fonts and the new Huaxia system (Figure 1). The mine area is almost completely covered by loess with a maximum thickness of one hundred In addition to some of the underlying basement rocks in the Upper Carboniferous horn shale, quartzite and a small amount of Middle Ordovician carbonate rocks, mainly Yanshanian alkaline