基于烃类组分结构的海域金矿成矿带演化特征
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摘要
近年来,很多研究结果表明:烃类组分结构常常与矿床的演化与成因密切相关,而胶西北地区该类型的研究较少。选择三山岛海域金矿为代表矿床,分析海域金矿30勘探线所取样品的地球化学特征和烃类组分结构特征,以探索该地区成矿带的演化特征。通过研究发现:本区各类地质体的烃类组分都属于热裂解成因,相互间具有一定的继承性,可能均来源于古老基底胶东群;海域金矿化体的形成与脉岩没有明显的成因关系,成矿热液伴生的烃类组分在成矿过程中,对围岩甚至是基性脉岩的烃类异常场有改造作用。
In recent years,many research results show that the hydrocarbon component structure is closely related to the evolution and genesis of the deposit,but the research in northwest Jiaodong area is less.Based on the analysis of geochemical characteristics and hydrocarbon component structure of the samples from the 30 exploration line of the Haiyu gold deposit in the Sanshandao,this paper explores the evolution characteristics of the metallogenic belt in the area.Through the research,it can be found that hydrocarbon components of every geological body in this district belong to the origin of thermal cracking,and are inherited each other and likely to come from the old basement of Jiaodong Group.The formation of Haiyu gold deposits is not related to the dikes.The hydrocarbon components associated with the hydrothermal fluid have reformed the hydrocarbon anomaly field of the surrounding rock and even the basic vein rock during the metallogenic process.
In recent years,many research results show that the hydrocarbon component structure is closely related to the evolution and genesis of the deposit,but the research in northwest Jiaodong area is less.Based on the analysis of geochemical characteristics and hydrocarbon component structure of the samples from the 30 exploration line of the Haiyu gold deposit in the Sanshandao,this paper explores the evolution characteristics of the metallogenic belt in the area.Through the research,it can be found that hydrocarbon components of every geological body in this district belong to the origin of thermal cracking,and are inherited each other and likely to come from the old basement of Jiaodong Group.The formation of Haiyu gold deposits is not related to the dikes.The hydrocarbon components associated with the hydrothermal fluid have reformed the hydrocarbon anomaly field of the surrounding rock and even the basic vein rock during the metallogenic process.
引文
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[2]吴森培,陈远荣,黄烽,等.华北地台北缘典型矿床地球化学异常模型差异性对比研究[J].矿产与地质,2017,31(2):355-361.
[3]唐泽伟,郭广军,王恩敬,等.山东焦家金矿中深部矿体成矿规律及成矿预测[J].黄金科学技术,2012,20(6):51-55.
[4]潘能海,陈远荣,徐建东,等.山东焦家金矿地球化学找矿模型研究[J].矿产与地质,2017,31(1):143-149.
[5]赵鹏沄,顾雪祥,邓小华.山东焦家金矿矿床成因及成矿模式[J].地质与勘探,2007,43(4):29-35.
[6]肖婷婷,陈远荣,白宇航,等.山东招远大伊格庄金矿烃类组分特征与异常模型研究[J].矿产与地质,2016,30(6):964-971.
[7]张军进,丁正江,刘殿浩,等.山东莱州三山岛北部海域超大型金矿勘查实践与找矿成果[J].黄金科学技术,2016,24(1):1-10.
[8]刘殿浩,吕古贤,张丕建,等.胶东三山岛断裂构造蚀变岩三维控矿规律研究与海域超大型金矿的发现[J].地学前缘,2015,22(4):162-172.
[9]宋明春,张军进,张丕建,等.胶东三山岛北部海域超大型金矿床的发现及其构造-岩浆背景[J].地质学报,2015,89(2):365-383.
[10]徐建东,陈远荣,张冠清,等.基于烃气测量技术的深地找矿预测:以山东夏甸金矿为例[J].矿产与地质,2016,30(3):427-430.
[11]翟文芳,陈远荣,蒋宗林,等.烃气测量法在四川会理富乐铜矿的有效性应用分析[J].现代矿业,2012,27(2):53-55.
[12]徐庆鸿.流体中烃类组分与金属成矿关系研究及其在找矿勘查中的应用[D].北京:中国地质大学(北京),2007.
[13]徐庆鸿,陈远荣,贾国相,等.烃类组分在金属矿床的成矿理论和矿产勘查研究中的应用[J].岩石学报,2007,23(10):2623-2638.
[14]徐庆鸿,秦来勇,张雪亮,等.建立烃类组分标准化背景的意义及在金属矿床成矿理论研究及矿产勘查方面的应用[J].矿床地质,2010,29(增刊1):1141-1142.
[15]宋明春,宋英昕,沈昆,等.胶东焦家深部金矿矿床地球化学特征及有关问题讨论[J].地球化学,2013,42(3):274-289.