韧性剪切带及其控矿作用研究
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摘要
沂沭断裂带中段金矿床的龙泉站金矿地处山东省沂水市。是一典型的受韧性剪切带控制的韧性剪切带型金矿。该矿床位于中国东部最大的断裂带沂沭断裂带的中部,属于不同构造叠加复合部位,成矿条件十分有利。
区内太古代地层作为具绿岩带性质的一套火山-沉积建造,其金的背景值明显高于克拉克值,是该区金矿的主要矿源层之一。根据岩石镜下分析以及岩石化学分析对比,可以看出该矿床金的来源主要有两种:①基性火山岩系;②热液含金流体。
矿床矿石矿物组成较简单,金属矿物以黄铁矿为主,其次为黄铜矿,有一定量的自然金;脉石矿物主要为绿泥石、石英、绢云母及碎斑岩中的斜长石等。矿石构造以条带状、角砾状、脉状、浸染状和团块为主;矿石结构以自形、半自形、它形为主,其次为包含结构、交代结构等。
龙泉站金矿床产于沂水——汤头断裂带的破碎带汞丹山凸起区,金矿化遍布整个矿区所有的岩性层,明显属于构造控矿,与所处的岩性层没有太大的关系。区域性韧性剪切带控制了矿床的展布,而次级韧脆性剪切带(控矿剪切带)控制了富矿体的分布,后期的脆性构造对矿体有一定的改造、破坏作用,同时也加强了金的再一次富集。强烈的变形构造机制是金矿床形成的主要动力学、运动学机制。韧性剪切带既是导矿构造,也是控矿、容矿构造。
韧性剪切带型金矿床中金主要富集在应变最强部位和韧性向脆性转换的部位。
The longquanzhan gold mine in the middle section of the Yishu fault zone is located in Yishui city Shandong province. The longquanzhan gold mine is a typical ductile gold mine, which has been controlled by ductile shear zone. this mine lies in Chinese east biggest fault zone—Yishu fault zone, which belongs to different structure overlay compound position, It is a very prospecting ore-forming region.Archeozoic layer in the district is a set of volcanic and deposit build, which is the character of greenstone belts. Archeozoic layer in the district golden background value is higher than Clark value obviously. It is one of the major mine sources in this district golden mine. Based on the rock analysis under the microscope and compare of the rock chemical analysis, it can see that the mineral gold origin chiefly possess two kinds: ① the volcanic rock; ②golden fluid medium of hot liquid.Minerals in mine are made up simpler, the metal minerals are pyrite, chalcopyrite in second, and little gold; the veinstone minerals are chlorite, quartz, sericite and feldspar etc. the structure of mineral stone is priority to strip shape, brecciform, veins shape, dip-dye shape and gobbets shape; the framework of mineral is composition with self form, semi-self, its form, embody composition and substitute composition in second.The longquanzhan gold mine bed lies in yishui-tangtou fault zone and gongdanshan horst. The gold minerization is found in all crag of entire mining area, it' s obvious pertain to the structure controlled mine, have no very much great relationship in the crag straturm. Exhibition of the deposit is controlled by the regional ductile shear zone, and the ore' s distrbution has been controlled by the secondary ductile shear zone(control led mine ductile zone), the brittleness structure of later stage possess the specified reconstruction and damage to the mineral ore, at the same time it also strengthened gold once more wealthy anthology. The deformation intensely mechanism is the main kinetics and
区内太古代地层作为具绿岩带性质的一套火山-沉积建造,其金的背景值明显高于克拉克值,是该区金矿的主要矿源层之一。根据岩石镜下分析以及岩石化学分析对比,可以看出该矿床金的来源主要有两种:①基性火山岩系;②热液含金流体。
矿床矿石矿物组成较简单,金属矿物以黄铁矿为主,其次为黄铜矿,有一定量的自然金;脉石矿物主要为绿泥石、石英、绢云母及碎斑岩中的斜长石等。矿石构造以条带状、角砾状、脉状、浸染状和团块为主;矿石结构以自形、半自形、它形为主,其次为包含结构、交代结构等。
龙泉站金矿床产于沂水——汤头断裂带的破碎带汞丹山凸起区,金矿化遍布整个矿区所有的岩性层,明显属于构造控矿,与所处的岩性层没有太大的关系。区域性韧性剪切带控制了矿床的展布,而次级韧脆性剪切带(控矿剪切带)控制了富矿体的分布,后期的脆性构造对矿体有一定的改造、破坏作用,同时也加强了金的再一次富集。强烈的变形构造机制是金矿床形成的主要动力学、运动学机制。韧性剪切带既是导矿构造,也是控矿、容矿构造。
韧性剪切带型金矿床中金主要富集在应变最强部位和韧性向脆性转换的部位。
The longquanzhan gold mine in the middle section of the Yishu fault zone is located in Yishui city Shandong province. The longquanzhan gold mine is a typical ductile gold mine, which has been controlled by ductile shear zone. this mine lies in Chinese east biggest fault zone—Yishu fault zone, which belongs to different structure overlay compound position, It is a very prospecting ore-forming region.Archeozoic layer in the district is a set of volcanic and deposit build, which is the character of greenstone belts. Archeozoic layer in the district golden background value is higher than Clark value obviously. It is one of the major mine sources in this district golden mine. Based on the rock analysis under the microscope and compare of the rock chemical analysis, it can see that the mineral gold origin chiefly possess two kinds: ① the volcanic rock; ②golden fluid medium of hot liquid.Minerals in mine are made up simpler, the metal minerals are pyrite, chalcopyrite in second, and little gold; the veinstone minerals are chlorite, quartz, sericite and feldspar etc. the structure of mineral stone is priority to strip shape, brecciform, veins shape, dip-dye shape and gobbets shape; the framework of mineral is composition with self form, semi-self, its form, embody composition and substitute composition in second.The longquanzhan gold mine bed lies in yishui-tangtou fault zone and gongdanshan horst. The gold minerization is found in all crag of entire mining area, it' s obvious pertain to the structure controlled mine, have no very much great relationship in the crag straturm. Exhibition of the deposit is controlled by the regional ductile shear zone, and the ore' s distrbution has been controlled by the secondary ductile shear zone(control led mine ductile zone), the brittleness structure of later stage possess the specified reconstruction and damage to the mineral ore, at the same time it also strengthened gold once more wealthy anthology. The deformation intensely mechanism is the main kinetics and
引文
1.国家地震局地质研究所著,郯庐断裂[M],北京:地震出版社,1987,1-6
2.林传勇,等著,韧性剪切带与金矿化的关系[M],1995,35-36
3.刘铁兵,山东蒙阴常马走滑式韧性剪切带控矿研究[J],地质与勘探,2001.1
4.邱小平,深部韧性剪切变形与金矿成矿作用[J],黄金地质,1999.9
5.徐贵忠,周瑞,王艺芬,佘宏全,李兵,杜本明,宋明春,胶东和鲁西地区中生代成矿作用重大差异性的内在因素[J],现代地质,2002.3
6.张家声,沂沭断裂带中段基底韧性剪切带[J],地震地质,1983.6
7.李洪奎,杨永波,田京祥等,山东沂沭断裂带中段金矿床地质特征[J],2004.7
8.孙正平,张桂兰,赵军,王志纲,聂宏彪,内蒙古中部韧性剪切带形成机理和控矿标志研究报告[M]1993,13-21
9.地质矿产部秦巴协调领导小组著,韧性剪切带与金矿成矿关系及韧性剪切带糜棱岩研究[M],1989年5月
10.马启波等著,中国热液金矿含金建造及成矿作用与找矿方向[M],北京:地质出版社1994
11.曲国胜,剪切带金矿成因——阿尔泰造山带中剪切带型金矿预测[J],大地构造与成矿学,1991.9
12.曲亚军,高段兰,韧性剪切带与金矿[J],辽宁地质科技情报,1991.5
13.游文澄,伦志强等,山东省区域地质志[M],北京:地质出版社,1991.
14.刘金友,高池兴,赵新峰,鲁中南地区燕山期侵入岩与金矿[J],黄金地质,2002.6
15.吴桂祥,淮胶辽地区构造演化与金成矿特征探讨[J],黄金,2002.6
16.任有保,于玉兰,沂水北部沂沭断裂带构造透镜体特征[J] 山东地质1996.6
17.翟裕生,林新多主编,矿田构造学[M],北京:地质出版社,1993.5
18.何绍勋,段嘉瑞,刘继顺,张曾荣主编,韧性剪切带与成矿[M],北京:地质出版社,1996.6
19.杨亮,金矿床与韧性剪切带的关系[J],国外前寒武纪地质,1996.3
20.李晓峰,华仁民,冯佐海,韧性剪切带变形变质作用与金的矿化富集,桂林学院学报,2001.7
21.沈远超,曾庆栋,刘铁兵,李光明,申萍,孙秀英,郯庐断裂与金矿成矿[J],世界地质2003.3
22.赵凤桐,徐光荣,梁宜林,赵宏光,王好均,吉林省西林河脆-韧性剪切带及其与金矿化的关系,贵金属地质,1996.
23.关键,孙丰月,刘洪文,吉林省东部韧性剪切带特征及其与金银成矿关系,地质与勘探,2004.3
24.沈其韩,山东沂水杂岩的组成与地质演化[M],北京:地质出版社,2000.6
25.张家声,郯庐断裂的性质和意义[J],地球科学——中国地质大学学报,1992.7
26.朱光,王道轩,刘国生,宋传中,徐嘉炜,牛漫兰,郯庐断裂带的伸展活动及其动力学背景[J],地质科学,2001.7
27.朱光,徐嘉炜,沂沭断裂带内盖层的剪切变形及其构造意义[J],长春地质学院学报,1995.7
28.周建波,胡克,沂沭断裂晋宁期的构造活动及性质[J],地震地质,1998.9
30.郯鲁断裂带的形成与演化:综述[J],现代地质,1996.6
31.郭涛,吕古贤,邓军,焦家金矿床容矿裂隙特征及构造解析[J],地球学报,2000.2
32.鲫敏,韩先菊,金矿床主要矿物标型特征研究综述[J],黄金地质,2003.12
33.陈柏林,构造形变类型与金矿化类型的关系[J],世界地质,2000.9
34.刘伟,广东河台金矿矿床成因及成矿规律研究[D],湖南省长沙市:中南大学,2004.
35.贺振,牟乳金矿带的构造成矿作用与成矿预测研究[D],陕西省西安市:长安大学,
2.林传勇,等著,韧性剪切带与金矿化的关系[M],1995,35-36
3.刘铁兵,山东蒙阴常马走滑式韧性剪切带控矿研究[J],地质与勘探,2001.1
4.邱小平,深部韧性剪切变形与金矿成矿作用[J],黄金地质,1999.9
5.徐贵忠,周瑞,王艺芬,佘宏全,李兵,杜本明,宋明春,胶东和鲁西地区中生代成矿作用重大差异性的内在因素[J],现代地质,2002.3
6.张家声,沂沭断裂带中段基底韧性剪切带[J],地震地质,1983.6
7.李洪奎,杨永波,田京祥等,山东沂沭断裂带中段金矿床地质特征[J],2004.7
8.孙正平,张桂兰,赵军,王志纲,聂宏彪,内蒙古中部韧性剪切带形成机理和控矿标志研究报告[M]1993,13-21
9.地质矿产部秦巴协调领导小组著,韧性剪切带与金矿成矿关系及韧性剪切带糜棱岩研究[M],1989年5月
10.马启波等著,中国热液金矿含金建造及成矿作用与找矿方向[M],北京:地质出版社1994
11.曲国胜,剪切带金矿成因——阿尔泰造山带中剪切带型金矿预测[J],大地构造与成矿学,1991.9
12.曲亚军,高段兰,韧性剪切带与金矿[J],辽宁地质科技情报,1991.5
13.游文澄,伦志强等,山东省区域地质志[M],北京:地质出版社,1991.
14.刘金友,高池兴,赵新峰,鲁中南地区燕山期侵入岩与金矿[J],黄金地质,2002.6
15.吴桂祥,淮胶辽地区构造演化与金成矿特征探讨[J],黄金,2002.6
16.任有保,于玉兰,沂水北部沂沭断裂带构造透镜体特征[J] 山东地质1996.6
17.翟裕生,林新多主编,矿田构造学[M],北京:地质出版社,1993.5
18.何绍勋,段嘉瑞,刘继顺,张曾荣主编,韧性剪切带与成矿[M],北京:地质出版社,1996.6
19.杨亮,金矿床与韧性剪切带的关系[J],国外前寒武纪地质,1996.3
20.李晓峰,华仁民,冯佐海,韧性剪切带变形变质作用与金的矿化富集,桂林学院学报,2001.7
21.沈远超,曾庆栋,刘铁兵,李光明,申萍,孙秀英,郯庐断裂与金矿成矿[J],世界地质2003.3
22.赵凤桐,徐光荣,梁宜林,赵宏光,王好均,吉林省西林河脆-韧性剪切带及其与金矿化的关系,贵金属地质,1996.
23.关键,孙丰月,刘洪文,吉林省东部韧性剪切带特征及其与金银成矿关系,地质与勘探,2004.3
24.沈其韩,山东沂水杂岩的组成与地质演化[M],北京:地质出版社,2000.6
25.张家声,郯庐断裂的性质和意义[J],地球科学——中国地质大学学报,1992.7
26.朱光,王道轩,刘国生,宋传中,徐嘉炜,牛漫兰,郯庐断裂带的伸展活动及其动力学背景[J],地质科学,2001.7
27.朱光,徐嘉炜,沂沭断裂带内盖层的剪切变形及其构造意义[J],长春地质学院学报,1995.7
28.周建波,胡克,沂沭断裂晋宁期的构造活动及性质[J],地震地质,1998.9
30.郯鲁断裂带的形成与演化:综述[J],现代地质,1996.6
31.郭涛,吕古贤,邓军,焦家金矿床容矿裂隙特征及构造解析[J],地球学报,2000.2
32.鲫敏,韩先菊,金矿床主要矿物标型特征研究综述[J],黄金地质,2003.12
33.陈柏林,构造形变类型与金矿化类型的关系[J],世界地质,2000.9
34.刘伟,广东河台金矿矿床成因及成矿规律研究[D],湖南省长沙市:中南大学,2004.
35.贺振,牟乳金矿带的构造成矿作用与成矿预测研究[D],陕西省西安市:长安大学,