山东省高唐县郭店地区富铁矿地质特征及成因探讨

Geological Characteristics and Origin of Rich Iron Deposit in Guodian Area in Gaotang County in Shandong Province

摘要:

铁矿是我国长期紧缺的重要战略性矿产，德州市齐河禹城地区内先后发现了李屯铁矿、大张铁矿、郭店铁矿等多个大中型矽卡岩型矿床。研究区位于齐河禹城重点勘查区中部，由于地处鲁西北第四系深覆盖区，以往地质工作程度相对较低。本文对区内地质资料进行梳理分析，对郭店铁矿的成矿地质背景、成矿地质特征进行了总结和研究，研究表明，矿体形成于早白垩世，矿体分布受地层及岩体控制，矿体厚度变化与矽卡岩发育程度密切相关。对矿床成因进行探讨，主矿体为与中性侵入岩有关的接触交代型铁矿，可为区内富铁矿勘查提供参考。

Abstract:

Iron deposit is an important strategic mineral that has been in short supply for a long time in China. Multiple large and medium size skarn type deposits have been discovered in QiheYucheng area in Dezhou city, such as Litun iron deposit, Dazhang iron deposit and Guodian iron deposit. The study area is located in the central part of QiheYucheng key exploration area. Due to its location in the deep coverage area of Quaternary system in northwest Shandong province, the degree of geological work in the past is relatively low. In order to study geological characteristics of this area, geological data has been sorted and analyzed, and oreforming geological background and characteristics of Guodian iron deposit have been summarized and studied. It is showed that the ore body was formed in the early Cretaceous, and its distribution is controlled by the stratigraphy and rock mass. The thickness of the ore body is closely related to development degree of skarn. The origin of the deposit has been studied. The main ore body is a contact metasomatic iron deposit related to neutral intrusive rocks. It can provide some references for the exploration of rich iron deposits in the area.