Geological Characteristics and Prospecting Prediction of Gold Deposit in Kawu Area,Zhenfeng County,Guizhou Province
WANG Dafu,1, LIU Jianzhong,2,3,4, WANG Zepeng1,3, CHEN Fa’en1, YANG Chengfu1,3, XU Liangyi1,4, LI Junhai1,3, LIU Jingke1, PAN Qiquan1, LONG Chengxiong1, WANG Xiaoyong1
1.No. 105 Geological Team, Bureau of Geology and Mineral Exploration and Development Guizhou Province, Guiyang 550018, Guizhou, China
2.Bureau of Geology and Mineral Exploration and Development Guizhou Province, Guiyang 550004, Guizhou, China
3.Technology Innovation Center of Mineral Resources Explorations in Bedrock Zones, Ministry of Natural Resources, Guiyang 550081, Guizhou, China
4.Guizhou University, Guiyang 550025, Guizhou, China
The tectonic position of the study area belongs to the junction of the southwest edge of the Yangtze quasi platform and the Youjiang fold belt of the south China fold belt,which is an important component of carlin-type gold deposits area in southwest Guizhou.The deep hidden deposit prospecting has not made a new breakthrough.Based on the recent research on structure-controlled alteration zone (SBT) and the latest theoretical results of multi-level structural slippage metallogenic system of carlin-type gold deposits in Nanpanjiang-Youjiang area,the geological background and geological characteristics of typical deposits are studied through field investigation in the Kawu,Southwestern Guizhou,China.The results further clarified the geological characteristics of gold deposits in the Kawu area and identified the main prospecting criteria,established the core elements of gold prospecting prediction in the Kawu area,and newly identified the existence of SBT between the rock interfaces with large differences in rock competence in the area,providing an important basis for regional prospecting prediction.The gold orebody is deposited in SBT and the high-angle pressure fault and the interlayer fracture zone,system summary Kawu area gold metallogenic elements.The study shows that the regional structural detachment and interlayer fracture zone are the main channel of metallogenic fluid migration and the ore site of gold ore body,the abnormal overlap parts of the metallogenic elements such as Au,As,Sb and Hg are the most favorable parts of mineralization,which is the same metallogenic system as the regional carlin-type gold deposit,and the gold metallogenic conditions are superior.Based on the multi-level structural detachment metallogenic system and the prospecting prediction model,the prospecting prediction was carried out,3 prospecting prediction areas were delineated,the gold resources in Kawu area were predicted as 50 t,and the prospecting direction in the area is defined,so as to provide guidance and reference for the subsequent prospecting work in this area.
Keywords:carlin-type gold deposit
;
structure alteration rocks (SBT)
;
ore-controlling factor
;
prospecting prediction
;
Kawu area
;
Guizhou Province
WANG Dafu, LIU Jianzhong, WANG Zepeng, CHEN Fa’en, YANG Chengfu, XU Liangyi, LI Junhai, LIU Jingke, PAN Qiquan, LONG Chengxiong, WANG Xiaoyong. Geological Characteristics and Prospecting Prediction of Gold Deposit in Kawu Area,Zhenfeng County,Guizhou Province[J]. Gold Science and Technology, 2023, 31(3): 433-442 doi:10.11872/j.issn.1005-2518.2023.03.151
研究区区域地质构造演化经历了早期拉张、裂陷、沉降和沉积以及晚期的挤压褶皱造山作用和伸展隆升过程,也是地幔热流从膨胀上隆、热收缩并恢复到膨胀前状态的过程。受太平洋板块向西持续俯冲的影响,导致华夏与扬子拼贴带西南段历经武陵—加里东—印支多次碰撞(戴传固等,2010)以及峨眉地幔柱的影响而形成的特殊富金地壳发生重熔,形成了与隐伏花岗岩有关的含矿热液(Hu et al.,2002;刘建中等,2014,2017a,2020a;靳晓野,2017)。含矿热液在燕山期构造作用下沿深大断裂上涌至构造演化形成的一系列短轴背斜或穹窿构造,及其核部虚脱空间或层间滑脱面交代而形成区域构造蚀变体(SBT),特别是本区岩石能干性差异大的罗楼组/吴家坪组(T1-2l/P3w)、领薅组/四大寨组(P2-3lh/P1-2sd)、许满组/吴家坪组(T2xm/P3w)岩层界面之间滑脱构造,是黔西南盆地相区金矿成矿热液运移通道及金矿赋矿空间(图4),如那郎、新寨、卡务、塘新寨和板其等金矿均产于此类构造中。
Table 3 Predicting areas of carlin-type gold deposits in Kawu area
预测区
名称
预测要素
面积/km2
预测延深/m
预测埋深/m
查明金资源量/t
预测潜在金资源量/t
合计
6
44
卡务
预测区
成矿构造:卡务背斜;成矿结构面:P2-3lh/P1-2sd构造蚀变体(SBT)、断裂;赋矿地层:P2-3lh;容矿岩石:构造角砾岩、玄武质岩屑砂岩、凝灰质黏土岩、粉砂岩;矿体类型:层控为主,断控为辅;热液蚀变:硅化、黄铁矿化、毒砂化、褐铁矿化、方解石化和白云石化;已有矿床(点):卡务;矿体埋深:100~500 m
25.83
2 000
100~500
1
20
新寨
预测区
成矿构造:白层背斜、断裂;成矿结构面:T1-2l/P3w构造蚀变体(SBT)、断裂;赋矿地层:T1-2l、T2x和T2b;容矿岩石:构造角砾岩、钙质砂岩、钙质粉砂岩和黏土质粉砂岩;矿体类型:层控、断控;热液蚀变:硅化、黄铁矿化、褐铁矿化、方解石化、白云石化和黏土化;已有矿床(点):新寨;矿体埋深:100~500 m
14.64
1 800
100~500
5
10
包树
预测区
成矿构造:包树背斜;成矿结构面:T1-2l/P3w之间构造蚀变体(SBT);赋矿地层:T1-2l;容矿岩石:钙质粉砂岩和泥灰岩;矿体类型:层控;热液蚀变:硅化、黄铁矿化、褐铁矿化和方解石化;已有矿床(点):包树;矿体埋深:100~300 m
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Study on geological characteristics and ore controlling condition of Xinzhai gold deposit in Zhenfeng of Guizhou
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Geology and geochemistry of carlin-type gold deposits in China
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... 研究区区域地质构造演化经历了早期拉张、裂陷、沉降和沉积以及晚期的挤压褶皱造山作用和伸展隆升过程,也是地幔热流从膨胀上隆、热收缩并恢复到膨胀前状态的过程.受太平洋板块向西持续俯冲的影响,导致华夏与扬子拼贴带西南段历经武陵—加里东—印支多次碰撞(戴传固等,2010)以及峨眉地幔柱的影响而形成的特殊富金地壳发生重熔,形成了与隐伏花岗岩有关的含矿热液(Hu et al.,2002;刘建中等,2014,2017a,2020a;靳晓野,2017).含矿热液在燕山期构造作用下沿深大断裂上涌至构造演化形成的一系列短轴背斜或穹窿构造,及其核部虚脱空间或层间滑脱面交代而形成区域构造蚀变体(SBT),特别是本区岩石能干性差异大的罗楼组/吴家坪组(T1-2l/P3w)、领薅组/四大寨组(P2-3lh/P1-2sd)、许满组/吴家坪组(T2xm/P3w)岩层界面之间滑脱构造,是黔西南盆地相区金矿成矿热液运移通道及金矿赋矿空间(图4),如那郎、新寨、卡务、塘新寨和板其等金矿均产于此类构造中. ...
Geology,Mineralization and Genesis of the Nipu,Shuiyindong and Yata Gold Deposits in SW Guizhou Province,China
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Geological and geochemical significance of hydrothermal minerals from Nibao-Baogudi carlin-type gold orefield in Southwestern Guizhou
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Detailed investigation report of Shuiyindong gold deposit in Zhenfeng County,Guizhou Province
0
2020a
Construction of multilevel structural detachment metallogenic system of carlin-type gold deposit in south China
0
2021
Multi level tectonic detachment metallogenic system of carlin-type gold deposits in South China
0
2020b
Discriminant index and significance of structural body alteration of carlin-type gold deposits in Yunnan-Guizhou-Guangxi and its surrounding areas,China
1
2022
... 1.花岗岩体;2.断裂;3.构造蚀变体;4.金矿体;5.大气降水;6.地层水;7.变质水;8.岩浆水Schematic diagram of multi-level structural detachment metallogenic system of carlin-type gold deposits in southern China(Liu et al.,2022)Fig.43.5 有利的岩性组合
Construction and prospecting practice of multilevel structural detachment metallogenic system of carlin-type gold deposits in Yunnan-Guizhou-Guangxi area
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2023
The relation between SBT and gold-antimony deposit metallogenesis and prospecting in Southwest Guizhou
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Geological research of Shuiyindong gold deposit in Zhenfeng County,Guizhou Province
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2017b
Sbt study and ideas in platform lithofaices area in the Southwest Guizhou
0
2010
The prospecting forecast report of Qianxinan Mining Area
0
2016
Discussion on the geological conditions and metallogenic regularity of Xinzhai gold deposit in southwestern Guizhou Province
0
2015
Geochemical Study on Multi-level Tectonic Slippage Metallogenic System of Nanpanjiang-Youjiang Carlin Type Gold Deposit
0
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Geochemical characteristics of secondary halo and prospecting direction in Jiaoguan gold deposit in Zhenfeng County,Guizhou Province
0
2017
Texture of the upper crust and pattern of the disseminated gold deposits distributed in Nanpanjiang area
0
1995
A discussion on the mineralization and prospecting direction of Kawu gold deposit in Guizhou Province
0
2014
A discussion on the genesis of carlin type gold deposits in southwest Guizhou,taking geological and geochemical characteristics of Nage gold deposit as an example
0
1996a
Preliminary discussion on the characteristics of geology,geochemistry and genesis of the Nage gold deposit,Southwest of Guizhou Province
0
1996b
Prospect analysis of gold prospecting in Zhenfeng Xinzhai-Jiangyou area,Guizhou Province
0
2020a
Discussion on the geological conditions and metallogenic mode of Kawu gold deposit in Zhenfeng County
... (3)矿体特征.通过现场调查和系统分析,识别出矿区早期所谓的断裂实为构造蚀变体,卡务背斜北西翼地层向南东倒转,金矿体产于卡务倒转背斜核部500 m范围内的层间滑脱及构造蚀变体(SBT)蚀变带中,矿体呈似层状、脉状和透镜状;容矿岩石主要为玄武岩屑砂砾岩、灰岩角砾岩、岩屑砂岩、黏土岩和黏土质粉砂岩.矿石结构主要有压碎、碎裂和交代等,构造有角砾状、块状、网脉状和浸染状等.金属矿物以褐铁矿为主,有少量赤铁矿和钛铁矿;非金属矿物为石英、方解石和硅酸盐矿物,以黏土类为主,有少量火山物质和高岭土.围岩蚀变主要为硅化、黄铁矿化、褪色化、黏土化和褐铁矿化,其中硅化、黄铁矿化与金矿化关系最为密切,石英脉是区内明显的金矿找矿标志(陈发恩等,2007;吴治君等,2014;高玉平,2015).区内仅发现浅部氧化矿,探明金资源量0.26 t. ...
1
2010
... 研究区区域地质构造演化经历了早期拉张、裂陷、沉降和沉积以及晚期的挤压褶皱造山作用和伸展隆升过程,也是地幔热流从膨胀上隆、热收缩并恢复到膨胀前状态的过程.受太平洋板块向西持续俯冲的影响,导致华夏与扬子拼贴带西南段历经武陵—加里东—印支多次碰撞(戴传固等,2010)以及峨眉地幔柱的影响而形成的特殊富金地壳发生重熔,形成了与隐伏花岗岩有关的含矿热液(Hu et al.,2002;刘建中等,2014,2017a,2020a;靳晓野,2017).含矿热液在燕山期构造作用下沿深大断裂上涌至构造演化形成的一系列短轴背斜或穹窿构造,及其核部虚脱空间或层间滑脱面交代而形成区域构造蚀变体(SBT),特别是本区岩石能干性差异大的罗楼组/吴家坪组(T1-2l/P3w)、领薅组/四大寨组(P2-3lh/P1-2sd)、许满组/吴家坪组(T2xm/P3w)岩层界面之间滑脱构造,是黔西南盆地相区金矿成矿热液运移通道及金矿赋矿空间(图4),如那郎、新寨、卡务、塘新寨和板其等金矿均产于此类构造中. ...
... (3)矿体特征.通过现场调查和系统分析,识别出矿区早期所谓的断裂实为构造蚀变体,卡务背斜北西翼地层向南东倒转,金矿体产于卡务倒转背斜核部500 m范围内的层间滑脱及构造蚀变体(SBT)蚀变带中,矿体呈似层状、脉状和透镜状;容矿岩石主要为玄武岩屑砂砾岩、灰岩角砾岩、岩屑砂岩、黏土岩和黏土质粉砂岩.矿石结构主要有压碎、碎裂和交代等,构造有角砾状、块状、网脉状和浸染状等.金属矿物以褐铁矿为主,有少量赤铁矿和钛铁矿;非金属矿物为石英、方解石和硅酸盐矿物,以黏土类为主,有少量火山物质和高岭土.围岩蚀变主要为硅化、黄铁矿化、褪色化、黏土化和褐铁矿化,其中硅化、黄铁矿化与金矿化关系最为密切,石英脉是区内明显的金矿找矿标志(陈发恩等,2007;吴治君等,2014;高玉平,2015).区内仅发现浅部氧化矿,探明金资源量0.26 t. ...
... (3)矿体特征:矿区已发现2个金矿体,产于与白层背斜近于平行的逆断层及层间破碎带中,呈透镜状、脉状和似层状;容矿岩石为细砂岩、泥质粉砂岩和断层角砾岩.矿石结构主要有粒状、鳞片和隐晶质等,构造有块状、脉状、浸染状和角砾状等.金属矿物主要为黄铁矿和褐铁矿等,非金属矿物主要为石英、方解石、白云石和高岭石等.围岩蚀变主要为硅化、黄铁矿化、黏土化、碳酸盐化和有机碳化,其中硅化与金矿关系密切,是寻找金矿的有效标志(高玉平,2015;罗俊峰等,2015).目前已探明金资源量2.83 t. ...
黔西南泥堡、水银洞和丫他金矿床的成矿作用特征与矿床成因研究
1
2017
... 研究区区域地质构造演化经历了早期拉张、裂陷、沉降和沉积以及晚期的挤压褶皱造山作用和伸展隆升过程,也是地幔热流从膨胀上隆、热收缩并恢复到膨胀前状态的过程.受太平洋板块向西持续俯冲的影响,导致华夏与扬子拼贴带西南段历经武陵—加里东—印支多次碰撞(戴传固等,2010)以及峨眉地幔柱的影响而形成的特殊富金地壳发生重熔,形成了与隐伏花岗岩有关的含矿热液(Hu et al.,2002;刘建中等,2014,2017a,2020a;靳晓野,2017).含矿热液在燕山期构造作用下沿深大断裂上涌至构造演化形成的一系列短轴背斜或穹窿构造,及其核部虚脱空间或层间滑脱面交代而形成区域构造蚀变体(SBT),特别是本区岩石能干性差异大的罗楼组/吴家坪组(T1-2l/P3w)、领薅组/四大寨组(P2-3lh/P1-2sd)、许满组/吴家坪组(T2xm/P3w)岩层界面之间滑脱构造,是黔西南盆地相区金矿成矿热液运移通道及金矿赋矿空间(图4),如那郎、新寨、卡务、塘新寨和板其等金矿均产于此类构造中. ...
... 研究区区域地质构造演化经历了早期拉张、裂陷、沉降和沉积以及晚期的挤压褶皱造山作用和伸展隆升过程,也是地幔热流从膨胀上隆、热收缩并恢复到膨胀前状态的过程.受太平洋板块向西持续俯冲的影响,导致华夏与扬子拼贴带西南段历经武陵—加里东—印支多次碰撞(戴传固等,2010)以及峨眉地幔柱的影响而形成的特殊富金地壳发生重熔,形成了与隐伏花岗岩有关的含矿热液(Hu et al.,2002;刘建中等,2014,2017a,2020a;靳晓野,2017).含矿热液在燕山期构造作用下沿深大断裂上涌至构造演化形成的一系列短轴背斜或穹窿构造,及其核部虚脱空间或层间滑脱面交代而形成区域构造蚀变体(SBT),特别是本区岩石能干性差异大的罗楼组/吴家坪组(T1-2l/P3w)、领薅组/四大寨组(P2-3lh/P1-2sd)、许满组/吴家坪组(T2xm/P3w)岩层界面之间滑脱构造,是黔西南盆地相区金矿成矿热液运移通道及金矿赋矿空间(图4),如那郎、新寨、卡务、塘新寨和板其等金矿均产于此类构造中.
... 研究区区域地质构造演化经历了早期拉张、裂陷、沉降和沉积以及晚期的挤压褶皱造山作用和伸展隆升过程,也是地幔热流从膨胀上隆、热收缩并恢复到膨胀前状态的过程.受太平洋板块向西持续俯冲的影响,导致华夏与扬子拼贴带西南段历经武陵—加里东—印支多次碰撞(戴传固等,2010)以及峨眉地幔柱的影响而形成的特殊富金地壳发生重熔,形成了与隐伏花岗岩有关的含矿热液(Hu et al.,2002;刘建中等,2014,2017a,2020a;靳晓野,2017).含矿热液在燕山期构造作用下沿深大断裂上涌至构造演化形成的一系列短轴背斜或穹窿构造,及其核部虚脱空间或层间滑脱面交代而形成区域构造蚀变体(SBT),特别是本区岩石能干性差异大的罗楼组/吴家坪组(T1-2l/P3w)、领薅组/四大寨组(P2-3lh/P1-2sd)、许满组/吴家坪组(T2xm/P3w)岩层界面之间滑脱构造,是黔西南盆地相区金矿成矿热液运移通道及金矿赋矿空间(图4),如那郎、新寨、卡务、塘新寨和板其等金矿均产于此类构造中. ...
... 研究区区域地质构造演化经历了早期拉张、裂陷、沉降和沉积以及晚期的挤压褶皱造山作用和伸展隆升过程,也是地幔热流从膨胀上隆、热收缩并恢复到膨胀前状态的过程.受太平洋板块向西持续俯冲的影响,导致华夏与扬子拼贴带西南段历经武陵—加里东—印支多次碰撞(戴传固等,2010)以及峨眉地幔柱的影响而形成的特殊富金地壳发生重熔,形成了与隐伏花岗岩有关的含矿热液(Hu et al.,2002;刘建中等,2014,2017a,2020a;靳晓野,2017).含矿热液在燕山期构造作用下沿深大断裂上涌至构造演化形成的一系列短轴背斜或穹窿构造,及其核部虚脱空间或层间滑脱面交代而形成区域构造蚀变体(SBT),特别是本区岩石能干性差异大的罗楼组/吴家坪组(T1-2l/P3w)、领薅组/四大寨组(P2-3lh/P1-2sd)、许满组/吴家坪组(T2xm/P3w)岩层界面之间滑脱构造,是黔西南盆地相区金矿成矿热液运移通道及金矿赋矿空间(图4),如那郎、新寨、卡务、塘新寨和板其等金矿均产于此类构造中. ...
... 研究区区域地质构造演化经历了早期拉张、裂陷、沉降和沉积以及晚期的挤压褶皱造山作用和伸展隆升过程,也是地幔热流从膨胀上隆、热收缩并恢复到膨胀前状态的过程.受太平洋板块向西持续俯冲的影响,导致华夏与扬子拼贴带西南段历经武陵—加里东—印支多次碰撞(戴传固等,2010)以及峨眉地幔柱的影响而形成的特殊富金地壳发生重熔,形成了与隐伏花岗岩有关的含矿热液(Hu et al.,2002;刘建中等,2014,2017a,2020a;靳晓野,2017).含矿热液在燕山期构造作用下沿深大断裂上涌至构造演化形成的一系列短轴背斜或穹窿构造,及其核部虚脱空间或层间滑脱面交代而形成区域构造蚀变体(SBT),特别是本区岩石能干性差异大的罗楼组/吴家坪组(T1-2l/P3w)、领薅组/四大寨组(P2-3lh/P1-2sd)、许满组/吴家坪组(T2xm/P3w)岩层界面之间滑脱构造,是黔西南盆地相区金矿成矿热液运移通道及金矿赋矿空间(图4),如那郎、新寨、卡务、塘新寨和板其等金矿均产于此类构造中. ...
... (3)矿体特征:矿区已发现2个金矿体,产于与白层背斜近于平行的逆断层及层间破碎带中,呈透镜状、脉状和似层状;容矿岩石为细砂岩、泥质粉砂岩和断层角砾岩.矿石结构主要有粒状、鳞片和隐晶质等,构造有块状、脉状、浸染状和角砾状等.金属矿物主要为黄铁矿和褐铁矿等,非金属矿物主要为石英、方解石、白云石和高岭石等.围岩蚀变主要为硅化、黄铁矿化、黏土化、碳酸盐化和有机碳化,其中硅化与金矿关系密切,是寻找金矿的有效标志(高玉平,2015;罗俊峰等,2015).目前已探明金资源量2.83 t. ...
... (3)矿体特征.通过现场调查和系统分析,识别出矿区早期所谓的断裂实为构造蚀变体,卡务背斜北西翼地层向南东倒转,金矿体产于卡务倒转背斜核部500 m范围内的层间滑脱及构造蚀变体(SBT)蚀变带中,矿体呈似层状、脉状和透镜状;容矿岩石主要为玄武岩屑砂砾岩、灰岩角砾岩、岩屑砂岩、黏土岩和黏土质粉砂岩.矿石结构主要有压碎、碎裂和交代等,构造有角砾状、块状、网脉状和浸染状等.金属矿物以褐铁矿为主,有少量赤铁矿和钛铁矿;非金属矿物为石英、方解石和硅酸盐矿物,以黏土类为主,有少量火山物质和高岭土.围岩蚀变主要为硅化、黄铁矿化、褪色化、黏土化和褐铁矿化,其中硅化、黄铁矿化与金矿化关系最为密切,石英脉是区内明显的金矿找矿标志(陈发恩等,2007;吴治君等,2014;高玉平,2015).区内仅发现浅部氧化矿,探明金资源量0.26 t. ...