山东栖霞香夼地区多金属硫化物矿床外围隐爆-侵入角砾岩的发现及意义
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摘要
山东胶东香夼多金属硫化物矿床尽管开采多年,资源规模仍有增长的空间。前人对矿床开展了大量研究,但很少有人提及隐爆角砾岩。该次工作在香夼多金属硫化物矿床外围蒙家一带新发现隐爆-侵入角砾岩,从产状、岩石学等方面进行了研究,认为其与构造角砾岩存在明显区别,结合香夼花岗闪长斑岩的岩石学、岩石地球化学特征,论述了在该地区具有形成隐爆角砾岩及隐伏斑岩型矿床的条件,并采用激电联合剖面进行了验证。综合分析认为,香夼矿区及外围隐爆-侵入角砾岩的发现,可以帮助寻找隐爆中心,丰富找矿模式,探寻斑岩型隐伏矿体。
Xiangkuang polymetallic sulfide deposit in Jiaodong peninsula is a skarn-porphyry type composite deposit.There is still room for growth in the scale of resources.A lot of research have been carried out in this deposit,but cryptoexplosive breccia has been mentioned fewly.Cryptoexplosive intrusive breccia has been newly discovered in the surrounding area of Xiangkuang polymetallic sulphide deposit in Mengjia area.Through study on occurrence and petrology,it is regarded that this deposit has obvious diffenence with tectonic breccia.Combining with the petrology and rock geochemistry of granodiorite porphyry in Xiangkuang area,the forming conditions of cryptoexplosive breccia and concealed porphyry type deposit have been discussed.It is verified by polarizaton joint section.Through comprehensive analysis,it is regarded that the discovery of cryptoexplosive intrusive breccia can help to seek concealed porphyry type deposit,enrich prospecting model,and search for concealed porphyry type deposit.
Xiangkuang polymetallic sulfide deposit in Jiaodong peninsula is a skarn-porphyry type composite deposit.There is still room for growth in the scale of resources.A lot of research have been carried out in this deposit,but cryptoexplosive breccia has been mentioned fewly.Cryptoexplosive intrusive breccia has been newly discovered in the surrounding area of Xiangkuang polymetallic sulphide deposit in Mengjia area.Through study on occurrence and petrology,it is regarded that this deposit has obvious diffenence with tectonic breccia.Combining with the petrology and rock geochemistry of granodiorite porphyry in Xiangkuang area,the forming conditions of cryptoexplosive breccia and concealed porphyry type deposit have been discussed.It is verified by polarizaton joint section.Through comprehensive analysis,it is regarded that the discovery of cryptoexplosive intrusive breccia can help to seek concealed porphyry type deposit,enrich prospecting model,and search for concealed porphyry type deposit.
引文
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[2]孙丰月,丁正江,刘殿浩,等.初论胶东福山北部地区斑岩成矿系统[J].黄金,2011,32(1):14-19.
[3]李洪奎,卜文峰,禚传源,等.山东胶东矿集区中生代构造事件与金矿成矿作用[J].山东国土资源,2017,33(1):1-10.
[4]李洪奎,于学峰,禚传源,等.山东胶东金矿成矿理论体系[J].山东国土资源,2017,33(7):1-6.
[5]王奎峰.胶东栖霞香夼铅锌多金属矿床地质特征及成因[J].地质调查与研究,2008,31(2):89-96.
[6]张乾.山东香夼斑岩型铅锌矿床的地球化学特征及成因探讨[J].地质找矿论丛,1990,5(2):12-19.
[7]胡品三.山东香夼多金属硫化物矿床分带特征和成矿机制的探讨[J].唐山工程技术学院学报,1987(3):25-33.
[8]王奎峰,郭宝奎,陈晓曼,等.山东省铅锌矿床类型、地质特征及找矿远景[J].地质调查与研究,2012,35(4):260-267.
[9]Sillitoe,R.H.Ore-Related Breccias in Volcanoplutonic Arcs[J].E-conomic Geology,1985,80(6):1467-1514.
[10]章邦桐,饶冰,陈培荣,等.论长英质隐爆角砾岩的气液流体溶浸成矿机制:以赣南6722铀矿为例[J].矿产地质,2001,20(2):129-137.
[11]Somarin,A.K.Ore Mineralogy and Mineral Chemistry of the Glen Eden Mo-W-Sn Greisen-Breccia System,Eastern Australia[J].Journal of Mineralogical and Petrological Sciences,2010,104(6):339-355.
[12]卢文姬,孔祥超,蓝信杰,等.山东栖霞香夼矿床深部地球化学成矿机理[J].地质与勘探,2016,52(6):1095-1106.
[13]章增凤.隐爆角砾岩的特征及其形成机制[J].地质科技情报,1991,10(4):1-5.
[14]汪山.山东栖霞香夼古火山机构及其成矿特征[J].吉林地质,1987,3(2):31-40.
[15]Burnham,C.W.Energy Release in Subvolcanic Environments:Implications for Breccia Formation[J].Economic Geology,1985,80(6):1515-1522.
[16]胡承绮,冯佐海,王林江,等.中酸性隐爆角砾岩、次火山(超浅成)岩与成矿的关系[J].地质与勘探,1997,33(4):1-6.
[17]丁正江.胶东中生代贵金属及有色金属矿床成矿规律研究[D].长春:吉林大学,2014:1-166.
[18]朱日祥,徐义刚,朱光,等.华北克拉通破坏[J].中国科学:地球科学,2012,42(8):1135-1159.
[19]张西社,王瑞廷,代军治,等.陕西山阳色河浦地区隐爆角砾岩特征及其铜矿找矿意义[J].地质学报,2015,89(4):766-778.
[20]唐菊兴.含金热液隐爆角砾岩的特征及研究意义[J].成都理工学院学报,1995,22(3):59-64.
[21]Wolfe,J.A.Fluidization versus phreatomagmatic explosions in breccia pipes[J].Economic Geology,1980,75:1105-1111.