西昆仑团结峰铅锌矿床地质特征及成矿模式
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摘要
团结峰铅锌矿床位于林济塘(陆缘盆地)Fe-Pb-Zn-Cu-Au-Mo-石膏矿带内,是近几年来新发现的铅锌矿床之一。本次研究在野外地质调查、探矿工程验证以及室内岩矿鉴定的基础上,查明该矿床含矿岩层受控于中侏罗统龙山组下段灰岩,矿体的分布明显受层理及层间破碎带等控制,产状呈层状、似层状,与早期构造及岩浆活动无明显关系;分析了含矿热液的形成、运移及铅锌硫化物的沉淀机制,初步建立其成矿模式。综合分析认为该矿床属层控密西西比河谷型(MVT)铅锌矿床,区域上同类型矿床具较大找矿潜力。
The Tuanjiefeng lead-zinc deposit located in Linjitang( epicontinental basin) Fe-Pb-Zn-Cu-Au-Mo-gypsum metallogenic belt,is one of the lead-zinc deposit found in recent years. On the basis of field geological survey,prospecting engineering verification and indoor mineral identification,the geological characteristics and metallogenic conditions and main controlling factors were analyzed. The result shows that the ore-bearing strata is controlled by middle Jurassic Longshan limestone group,the spatial distribution of ore bodies is obviously controlled by bedding and interlayer fracture zone in forms of layered and stratoid. There is not obvious relationship with the early tectonic and magmatic activities. Meanwhile,the formation,ore fluid migration,and precipitation mechanism of lead and zinc sulfide were analyzed,and the metallogenic model was established. The comprehensive analysis shows that the Pb-Zn deposit belongs to strata bound type Mississippi Valley-type( MVT). There is great potential for the same type deposit in the region.
The Tuanjiefeng lead-zinc deposit located in Linjitang( epicontinental basin) Fe-Pb-Zn-Cu-Au-Mo-gypsum metallogenic belt,is one of the lead-zinc deposit found in recent years. On the basis of field geological survey,prospecting engineering verification and indoor mineral identification,the geological characteristics and metallogenic conditions and main controlling factors were analyzed. The result shows that the ore-bearing strata is controlled by middle Jurassic Longshan limestone group,the spatial distribution of ore bodies is obviously controlled by bedding and interlayer fracture zone in forms of layered and stratoid. There is not obvious relationship with the early tectonic and magmatic activities. Meanwhile,the formation,ore fluid migration,and precipitation mechanism of lead and zinc sulfide were analyzed,and the metallogenic model was established. The comprehensive analysis shows that the Pb-Zn deposit belongs to strata bound type Mississippi Valley-type( MVT). There is great potential for the same type deposit in the region.
引文
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[14]杜红星,魏永峰,薛春纪,等.多宝山铅锌矿床地质特征及地球化学研究[J].新疆地质,2012,30(1):52-57.
[15]董连慧,徐兴旺,范廷宾,等.喀喇昆仑火烧云超大型喷流-沉积成因碳酸盐型Pb-Zn矿的发现及区域成矿学意义[J].新疆地质,2015,33(1):41-50.
[2]李博泉,王京彬.中国新疆铅锌矿床[M].北京:地质出版社,2006.
[3]杜红星,魏永峰,薛春纪,等.多宝山铅锌矿床地质特征及地球化学研究[J].新疆地质,2012,30(1):52-57.
[4]杜红星,魏永峰,薛春纪,等.和田宝塔山铅锌矿地质特征与流体包裹体研究[J].新疆地质,2013,31(1):16-20.
[5]计文化.西昆仑-喀喇昆仑晚古生代-早中生代构造格局[D].北京:中国地质大学(北京),2005:1-743.
[6]崔建堂,边小卫,王根宝.西昆仑地质组成与演化[J].陕西地质,2006,24(1):1-11.
[7]杨克俭,彭海练,朱海平,等.青藏高原甜水海地区中泥盆统落石沟组地层的发现与厘定[J].陕西地质,2004,22(1):24-28.
[8]魏永峰,赵志强,林美英,等.西昆仑团结峰地区E-MORB残片的发现、地球化学特征及构造意义[J].新疆地质,2016,34(3):312-316.
[9]Leach D L,Sangster D F.Mississippi Valley-type lead posits[J].Geological Association of Canada Special Paper,1993,40:289-314.
[10]Leach D L,Bradley D C,Huston D,et al.Sediment-hosted lead-zincdeposits in earth history[J].Economic Geology,2010,105:593-625.
[11]张长青,余金杰,毛景文,等.密西西比型(MVT)铅锌矿床研究进展[J].矿床地质,2009,28(2):195-210.
[12]Leach D L,Sangster D F,Kelley K D,Large R R,Garven G,Allen CR,Gartner J and Wallters S.Sediment-hosted lead-ank deposit;A global perspective[J].Economic Geology 100th Anniver-sary Volume,2005:561-607.
[13]徐仕琪,冯京,田江涛,等.西昆仑落石沟一带铅锌矿成矿规律与找矿前景[J].新疆地质,2014,32(1):1-10.
[14]杜红星,魏永峰,薛春纪,等.多宝山铅锌矿床地质特征及地球化学研究[J].新疆地质,2012,30(1):52-57.
[15]董连慧,徐兴旺,范廷宾,等.喀喇昆仑火烧云超大型喷流-沉积成因碳酸盐型Pb-Zn矿的发现及区域成矿学意义[J].新疆地质,2015,33(1):41-50.