综合物探在西藏仲巴县帮布勒地区找矿中的应用和意义
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摘要
帮布勒矿床为近年来新发现的矽卡岩型铅锌铜铁矿床,地表圈定铅锌铁矿(化)体76个、铜矿(化)体2个,矿体地表长10～480m,平均厚度0.75～30m,成矿岩体为石英斑岩,矿体主要产于石英斑岩与大理岩、灰岩、砂岩的接触带以及大理岩、灰岩的层间分界面等。在该矿区实施了1∶10 000地面高精度磁测和1∶10 000激电中梯测量、激电测深工作,综合利用磁法和电法,总结了本区主要铅锌铜铁矿(化)体的地球物理找矿标志,控制了岩体与围岩接触带以及大理岩、灰岩层间分界面,通过激电测深二维极化率反演推测了矿(化)体在地下空间的展布形态,结合矿区地质特征,进行了成矿预测,有效地指导了帮布勒矿区的深部找矿工作。
Bangbule deposit is a newly discovered large-scale Pb-Zn-Cu-Fe deposit in recent years.There are 76 Pb-Zn-Fe ore bodies and 2 Cu bodies on the surface.The surface length of the ore body is 10-480 m with an average thickness of 0.75-30 m.The ore-bearing rock mass is quartz porphyry.The ore body is mainly produced in quartz porphyry and marble,limestone,sandstone contact zone and marble,limestone interlayer interface.In this study,1∶10 000 high precision magnetic measurement and the IP measurement of the ladder were conducted,and the IP sounding was laid out in Bangbule Pb-Zn-Cu-Fe mining area.This study then summarizes the geophysical prospecting signs of the main Pb-Zn-Cu-Fe ore bodies in the study area by geophysical methods.The contact between the rock mass and the surrounding rock and the interbedment of the formation are controlled,and the distribution of the objects in the underground space is deduced.Combining with the geological characteristics of the mining area,the study implemented the mineralization prediction,which effectively guides the prospecting work in this area for good exploration results.
Bangbule deposit is a newly discovered large-scale Pb-Zn-Cu-Fe deposit in recent years.There are 76 Pb-Zn-Fe ore bodies and 2 Cu bodies on the surface.The surface length of the ore body is 10-480 m with an average thickness of 0.75-30 m.The ore-bearing rock mass is quartz porphyry.The ore body is mainly produced in quartz porphyry and marble,limestone,sandstone contact zone and marble,limestone interlayer interface.In this study,1∶10 000 high precision magnetic measurement and the IP measurement of the ladder were conducted,and the IP sounding was laid out in Bangbule Pb-Zn-Cu-Fe mining area.This study then summarizes the geophysical prospecting signs of the main Pb-Zn-Cu-Fe ore bodies in the study area by geophysical methods.The contact between the rock mass and the surrounding rock and the interbedment of the formation are controlled,and the distribution of the objects in the underground space is deduced.Combining with the geological characteristics of the mining area,the study implemented the mineralization prediction,which effectively guides the prospecting work in this area for good exploration results.
引文
[1]高顺宝.西藏冈底斯西段铜铁多金属成矿作用与找矿方向[D].武汉:中国地质大学,2015.
[2]李荣亮,田建荣,刘洋,等.综合物探方法在甘肃梧桐井铁铜多金属矿勘查中的应用[J].地质与勘探,2017,53(4):755-764.
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[9]王赛昕,颜廷杰,左焕成.高精度磁测在攀枝花外围寻找钒钛磁铁矿的效果[J].地质科技情报,2017,36(3):255-261.
[10]鲁杏,崔先文.激发极化测深数据反演方法及应用[J].地质科技情报,2015,34(3):202-207.
[11]祁晓雨,张胜业,石砚斌.大功率激电测深在内蒙古某铅锌矿的应用[J].工程地球物理学报,2008,5(6):719-723.
[12]曾歌明,张胜业,陈长敬,等.激发极化法在某铅锌矿勘探中的应用[J].工程地球物理学报,2007,4(5):466-469.
[13]李华,王永华,艾斯卡尔·吾守艾力,等.西南山区矿调中的地球物理综合找矿技术[J].物探与化探,2012(4):523-528.
[14]左焕成,郑伟,吴小勇,等.综合物探在西藏尼木地区斑岩铜矿找矿中的应用[J].地质找矿论丛,2012(2):245-250.
[15]张景超,刘涛,李娜.西藏念青唐古拉地区激发极化法找矿应用[J].矿产与地质,2012(2):153-156.
[16]蔡海涛,孙磊,张建阳,等.激电测深在某铜多金属矿区的应用[J].世界有色金属,2016(12):49-51.
[17]李玉彬,多吉,钟婉婷,等.西藏改则县多不杂斑岩型铜金矿床勘查模型[J].地质与勘探,2012(2):274-287.
[18]黄鹏程,郑有业,高顺宝,等.西藏帮布勒铅锌铜铁矿床地球化学特征及找矿意义[J].矿物学报,2015(增刊1):394.
[2]李荣亮,田建荣,刘洋,等.综合物探方法在甘肃梧桐井铁铜多金属矿勘查中的应用[J].地质与勘探,2017,53(4):755-764.
[3]李富,郭阳,廖国忠,等.综合物探方法在隐爆角砾岩成矿预测中的研究:以黑箐矿产勘查为例[J].地质科技情报,2014,33(5):122-127,133.
[4] Wu X H,Ian J F,Alan G J.Magnetotelluric response and geoelectric structure of the Greet Slave Lake shear zone[J].Earth and Planetary Science Letters,2002,196:35-50.
[5] Nobuo M,Hiromitsu O,Yasuo O,et al.Magma prospecting in USU volcano,Hokkaido,Janpan,using magnetotelluric soundings[J].J.Volcanol.Geotherm.Res.,2001,109:263-277.
[6] Basokur A T,Rasmussen T M,Kaya C,et al.Comparison of induced-polarization and controlled-source audio-magnetotellurics methods for massive chalcopyrite exploration in a volcanic area[J].Geophsics,1997,62(6):1087-1096.
[7] Oldenburg D W,Li Y.Inversion of induced polarization data[J].Geophysics,1994,59(9):1327-1341.
[8]柳康伟,曹礼刚,吴兴,等.地面高精度磁测在寻找隐伏铜铁矿的应用[J].物探化探计算技术,2015,(5):592-598.
[9]王赛昕,颜廷杰,左焕成.高精度磁测在攀枝花外围寻找钒钛磁铁矿的效果[J].地质科技情报,2017,36(3):255-261.
[10]鲁杏,崔先文.激发极化测深数据反演方法及应用[J].地质科技情报,2015,34(3):202-207.
[11]祁晓雨,张胜业,石砚斌.大功率激电测深在内蒙古某铅锌矿的应用[J].工程地球物理学报,2008,5(6):719-723.
[12]曾歌明,张胜业,陈长敬,等.激发极化法在某铅锌矿勘探中的应用[J].工程地球物理学报,2007,4(5):466-469.
[13]李华,王永华,艾斯卡尔·吾守艾力,等.西南山区矿调中的地球物理综合找矿技术[J].物探与化探,2012(4):523-528.
[14]左焕成,郑伟,吴小勇,等.综合物探在西藏尼木地区斑岩铜矿找矿中的应用[J].地质找矿论丛,2012(2):245-250.
[15]张景超,刘涛,李娜.西藏念青唐古拉地区激发极化法找矿应用[J].矿产与地质,2012(2):153-156.
[16]蔡海涛,孙磊,张建阳,等.激电测深在某铜多金属矿区的应用[J].世界有色金属,2016(12):49-51.
[17]李玉彬,多吉,钟婉婷,等.西藏改则县多不杂斑岩型铜金矿床勘查模型[J].地质与勘探,2012(2):274-287.
[18]黄鹏程,郑有业,高顺宝,等.西藏帮布勒铅锌铜铁矿床地球化学特征及找矿意义[J].矿物学报,2015(增刊1):394.