河北邯邢地区铁矿成矿模式研究
2021-12-13李跃武
李跃武
摘要:该文通过对邯邢地区铁矿赋存情况研究,从成矿地质背景入手,广泛研究地层、构造、成矿构造分布,大地构造相与成矿的关系,围岩对成矿作用的影响,分析各成矿阶段的典型岩石矿物特征;并对该地区铁矿成矿条件进行深入分析研究,从而找出邯邢地区铁矿的成矿模式,并研究成矿过程、成矿温度等成矿机理,掌握矿床的地质条件特征,总结成矿规律的理论方法,为今后的找矿和矿床地质研究找到理论依据。
关键词:邯邢铁矿 成矿条件 成矿模式 接触交代
中图分类号:TF521 文献标识码:A 文章编号:1672-3791(2021)09(c)-0000-00
Study on Metallogenic Model of Iron Ore in HanxingArea, Hebei Province
LIYuewu
(Zheng Jia Mining projects in Sinosteel Group Shandong Mining., Ltd., Changyi,Shangdong Province,261313 China)
Abstract: By studying the occurrence of iron ore in Hanxing area, starting with the geological background of mineralization,including stratum, extensive research structure and metallogenic structure distribution, the relationship between tectonic facies and mineralization, and the influence of surrounding rock on mineralization.The characteristics of typical rocks and minerals in each metallogenic stage are analyzed, and the metallogenic conditions of iron ore in this area are deeply analyzed and studied, so as to find out the metallogenic model of iron ore in Hanxing area。 It also studies the metallogenic mechanism such as metallogenic process and metallogenic temperature, grasps the geological conditions and characteristics of the deposit, and summarizes the theoretical methods of metallogenic law, so as to find a theoretical basis for future prospecting and deposit geological research。
Key Words:Hanxing iron mine; Metallogenic conditions; Metallogenic model;Contact metasomatic
邯邢地区铁矿分布比较广泛,以磁铁矿为主,矿床的赋存条件大体相同,通过对多个矿床的认真研究分析,找出该地区铁矿的成矿条件,为今后的找矿和勘探工作提供理论依据。
1成矿地质背景
该区岩浆岩十分发育,幔源系列火山岩和侵入岩出露面积较广,由超基性、基性和偏碱性岩石和组成的一套岩石组成的一套幔源分异系列岩石。
由于所处的华北板块,在晚古生代与扬子板块对接,北与本伯利亚板块(蒙古洋板块)碰撞,以及中生代太平洋板块与欧亚板块的相互作用的特殊的大地构造背景下,由于复杂的地壳深化歷程,形成了具有多样性的岩石建造特点,同时也导致了成矿物质的多源性、成矿作用的多期性和成矿类型的多样性。在中元古代—中生代的各个地质历史时期中,在岩浆结晶分异、熔离作用以及岩浆期后热液、接触交代作用下,形成了具有工作价值的工业矿床。……
