铜冶店-孙祖断裂成因机制与控岩控矿研析
|
摘要
铜冶店-孙祖断裂展布方向与区域上基底岩石的条带展布方向一致,该断裂规模巨大,总体上分为6段,作为构造单元边界的分划性断裂往往深切上地幔或下地壳,从而成为深部岩浆和矿液的上升通道。它控制着该区成矿带或成矿区的分布,金牛山岩体、矿山岩体、铁铜沟岩体、铜井岩体等中基性—中性—中偏碱性(中偏酸性)杂岩体亦是受铜冶店-孙祖及其次级断裂或与其他构造复合部位控制。该断裂经历了多期活动,早期活动控制着两侧地质体的分布,晚期活动对各种含矿热液的运移和富集起着不同程度的控制作用,是铁、铜、金矿成矿作用的有机组成部分,"构造、地层、岩体"三要素是形成接触交代(矽卡岩)型铁矿等矿床必不可少的控矿因素。该断裂活动提供了成矿物质和流体迁移、聚集的热力和动力,提供了成矿物质运移和沉淀的空间场所,其所控制的矽卡岩型铁矿床及中低温热液金、铜等矿床,多集中于铜冶店-孙祖断裂鹿野-前孤山段,该断裂具"构造控矿,分段富集(走向、倾向)"的特点。
The distribution direction of Tongyedian-Sunzu fault is consistent with that of basement rocks in the region. The fault has a huge scale and is generally divided into six sections. As the boundary of tectonic units, divisional faults often cut deep into the upper mantle or lower crust. Thus, it becomes the ascending channel of deep magma and ore fluid. It controls the distribution of metallogenic belt or metallogenic area in this area. The intermediate-basic-neutral-alkaline(intermediate-acidic) complex, such as Jinniushan rock mass, mine rock mass, Tietonggou rock mass and Tongjing rock mass are also controlled by Tongyedian-Sunzu fault, its secondary faults and other structural composite parts. The fault has experienced multi-stage activities. Early activities control the distribution of geological bodies on both sides, while late activities control the migration and enrichment of various ore-bearing hydrothermal fluids in varying degrees. It is an important part of the mineralization of iron, copper and gold deposits. "Structure, stratum and rock mass" are indispensable ore-controlling characteristics for the formation of contact metasomatic(skarn) type iron deposits. The activity of the fault provides the heat and power for the migration and accumulation of ore-forming materials and fluids, as well as the space for the migration and precipitation of ore-forming materials. The skarn-type iron deposits are controlled by the fault. Low and medium temperature hydrothermal gold and copper deposits are mostly concentrated in Luye-Qiangushan section of Tongyedian-Sunzu fault. The fault has the characteristics of "tectonic ore-controlling, section enrichment"(strike and tendency).
The distribution direction of Tongyedian-Sunzu fault is consistent with that of basement rocks in the region. The fault has a huge scale and is generally divided into six sections. As the boundary of tectonic units, divisional faults often cut deep into the upper mantle or lower crust. Thus, it becomes the ascending channel of deep magma and ore fluid. It controls the distribution of metallogenic belt or metallogenic area in this area. The intermediate-basic-neutral-alkaline(intermediate-acidic) complex, such as Jinniushan rock mass, mine rock mass, Tietonggou rock mass and Tongjing rock mass are also controlled by Tongyedian-Sunzu fault, its secondary faults and other structural composite parts. The fault has experienced multi-stage activities. Early activities control the distribution of geological bodies on both sides, while late activities control the migration and enrichment of various ore-bearing hydrothermal fluids in varying degrees. It is an important part of the mineralization of iron, copper and gold deposits. "Structure, stratum and rock mass" are indispensable ore-controlling characteristics for the formation of contact metasomatic(skarn) type iron deposits. The activity of the fault provides the heat and power for the migration and accumulation of ore-forming materials and fluids, as well as the space for the migration and precipitation of ore-forming materials. The skarn-type iron deposits are controlled by the fault. Low and medium temperature hydrothermal gold and copper deposits are mostly concentrated in Luye-Qiangushan section of Tongyedian-Sunzu fault. The fault has the characteristics of "tectonic ore-controlling, section enrichment"(strike and tendency).
引文
[1] 宋明春,徐军祥,王沛成,等.山东省大地构造格局和地质构造演化[M].北京:地质出版社,2009:50-80.
[2] 罗文强,张尚坤,于学峰,等.沂沭断裂带研究进展综述[J].山东国土资源,2018,34(5):62-63.
[3] 郝兴中,王巧云.鲁中隆起区中北部矽卡岩型铁矿成矿预测[J].地质学刊,2016,40(3):443-449.
[4] 张增奇,张成基,王世进,等.山东省侵入岩构造单元划分对比意见[J].山东国土资源,2014,30(3):1-23.
[5] 郝兴中,刘伟,臧凯,等.鲁西潘店地区矽卡岩型铁矿成矿规律初探[J].山东国土资源,2018,34(7):23-28.
[6] 董振信.山东某铁矿区燕山期侵入杂岩的造岩矿物和蚀变矿物特征[J].地质学报,1978(2):81-86.
[7] 杨昌彬,宗信德,卢铁元,等.浅析莱芜接触交代-热液铁矿的双交代渗滤作用[J].地质找矿论丛,2006,21(增刊):85-89.
[8] 宗信德,贾东亮,刘超,等.山东莱芜接触交代—热液铁矿矿体形态研究[J].山东国土资源,2010,26(11):13-18.
[9] 宗信德,李卫,赵宏生,等.山东莱芜接触交代—热液铁矿多因素成矿及特征[J].地质与资源,2011,20(5):370-375.
[10] 江磊,王若梅,李智明.矽卡岩型矿床特征概述[J].西北地质,2012,45(增刊):167.
[11] 郑建民,谢桂青,陈懋弘,等.岩体侵位机制对矽卡岩型矿床的制约[J].矿床地质,2007,26(4):482.
[12] 董岩峰.邯郸地区矽卡岩型铁矿成矿规律及找矿方向[J].河北国土资源与海洋科技信息,2014(1):6.
[13] 马健飞,胡永亮,李仁杰.矽卡岩型铁矿的成矿地质特征及成因综述[J].西部资源,2016(4):21.
[14] 汤天荣.浅谈福建马坑矽卡岩型铁矿床成矿模式[J] .江西建材,2016(21):219.
[15] 汤庆艳,张铭杰,余明,等.晚二叠世峨眉山地幔柱岩浆成矿作用[J].岩石矿物学,2013,32(5):680-681.
[16] 罗照华,卢欣祥,郭少丰,等.透岩浆流体成矿体系[J].岩石学报,2008(12):2669-2678.
①山东省地质调查院,1∶250000临沂市幅区域地质调查报告,2007年。
[2] 罗文强,张尚坤,于学峰,等.沂沭断裂带研究进展综述[J].山东国土资源,2018,34(5):62-63.
[3] 郝兴中,王巧云.鲁中隆起区中北部矽卡岩型铁矿成矿预测[J].地质学刊,2016,40(3):443-449.
[4] 张增奇,张成基,王世进,等.山东省侵入岩构造单元划分对比意见[J].山东国土资源,2014,30(3):1-23.
[5] 郝兴中,刘伟,臧凯,等.鲁西潘店地区矽卡岩型铁矿成矿规律初探[J].山东国土资源,2018,34(7):23-28.
[6] 董振信.山东某铁矿区燕山期侵入杂岩的造岩矿物和蚀变矿物特征[J].地质学报,1978(2):81-86.
[7] 杨昌彬,宗信德,卢铁元,等.浅析莱芜接触交代-热液铁矿的双交代渗滤作用[J].地质找矿论丛,2006,21(增刊):85-89.
[8] 宗信德,贾东亮,刘超,等.山东莱芜接触交代—热液铁矿矿体形态研究[J].山东国土资源,2010,26(11):13-18.
[9] 宗信德,李卫,赵宏生,等.山东莱芜接触交代—热液铁矿多因素成矿及特征[J].地质与资源,2011,20(5):370-375.
[10] 江磊,王若梅,李智明.矽卡岩型矿床特征概述[J].西北地质,2012,45(增刊):167.
[11] 郑建民,谢桂青,陈懋弘,等.岩体侵位机制对矽卡岩型矿床的制约[J].矿床地质,2007,26(4):482.
[12] 董岩峰.邯郸地区矽卡岩型铁矿成矿规律及找矿方向[J].河北国土资源与海洋科技信息,2014(1):6.
[13] 马健飞,胡永亮,李仁杰.矽卡岩型铁矿的成矿地质特征及成因综述[J].西部资源,2016(4):21.
[14] 汤天荣.浅谈福建马坑矽卡岩型铁矿床成矿模式[J] .江西建材,2016(21):219.
[15] 汤庆艳,张铭杰,余明,等.晚二叠世峨眉山地幔柱岩浆成矿作用[J].岩石矿物学,2013,32(5):680-681.
[16] 罗照华,卢欣祥,郭少丰,等.透岩浆流体成矿体系[J].岩石学报,2008(12):2669-2678.
①山东省地质调查院,1∶250000临沂市幅区域地质调查报告,2007年。