安徽月山岩体岩石地球化学特征及成因
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摘要
月山矿田是长江中、下游地区典型的夕卡岩-热液脉型铁、铜、金多金属矿田。月山岩体与金属矿床成因密切相关。通过对月山岩体系统的岩石学、岩石化学和微量元素地球化学特征研究,认为月山岩体是在区域拉张环境下,由亏损地幔低程度部分熔融形成的硅酸不饱和高钾碱性玄武岩浆经AFC机制形成的。
The Yueshan ore field is a typical skarn-hydrothermal-type Fe,Cu(Au) polymetallic ore field in the middle-lower reaches of the Changjiang(Yangtze) River.The Yueshan intrusion has close genetic relationship with the ore deposits.Systematic studies on petrology,petrochemistry and trace element geochemistry of the intrusion were carried out,and the results showed that the Yueshan intrusion was formed by a combined process of wal1-rock assimilation of crustal material and fractional crystallization of Si-unsaturated high-K alkaline basalt,which was derived from low-degree partial melting of the depleted mantle.The diagenetic environment of the intrusion is a regionally extensional one.
The Yueshan ore field is a typical skarn-hydrothermal-type Fe,Cu(Au) polymetallic ore field in the middle-lower reaches of the Changjiang(Yangtze) River.The Yueshan intrusion has close genetic relationship with the ore deposits.Systematic studies on petrology,petrochemistry and trace element geochemistry of the intrusion were carried out,and the results showed that the Yueshan intrusion was formed by a combined process of wal1-rock assimilation of crustal material and fractional crystallization of Si-unsaturated high-K alkaline basalt,which was derived from low-degree partial melting of the depleted mantle.The diagenetic environment of the intrusion is a regionally extensional one.
引文
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[5]陈江峰,喻钢,杨刚,杨胜洪.安徽沿江江南晚中生代岩浆-成矿年代学格架[J].安徽地质,2005,15(3):161-169.
[6]李波,陈江峰,郑永飞,赵子福,钱卉.安徽月山石英闪长岩氧同位素分馏、Rb-Sr等时线定年与矿物蚀变之间的关系[J].岩石学报,2004,20(5):1185-1192.
[7]邱瑞龙.安徽月山高钾闪长岩岩石学特征及岩石成因探讨[J].地质论评,1992,38(2):98-107.
[8]阎桂林,张鸣,李永涛.安徽安庆月山岩体的磁组构及古地磁特征[J].地球科学,1990,15(6):667-673.
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[10]束学福.安庆夕卡岩型铁铜矿床地质地球化学特征及铁质来源研究[J].矿物岩石地球化学通报,2004,23(3):219-224.
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[12]黎彤,饶纪龙.中国岩浆岩的平均化学成分[J].地质学报,1963,43(3):271-280.
[13]Le Maitre R W.AClassification ofIgneous Rocks and GlossaryofTerms[M].Blackwell:Oxford,1989,185-193.
[14]Irvine TNand Barager WR A.Aguide to the chemical classification of the common volcanic rocks[J].Canadian Journal of Earth Sciences,1971,8:532~548.
[15]邱家骧,林景仟.岩石化学[M].北京:地质出版社,1991:1-276.
[16]Sun S-S,McDonough WF.Chemical andisotopic systematics of oceanic basalts:implications for mantle composition and processes[J].Geol SocSpec Pub,1989,42:313-345.
[17]Taylor S R,McLennan S M.The geochemical evolution of the continental crust[J].ReviewGeophysics,1995,33:241-265.
[18]Condie KC.Plate Tectonic and Crustal Evolution[M].NewYork:Pergamon press,1982:110-310.
[19]McCullock MT,Jaques AL,Lewis J D.Nd and Sr isotopesin kimberlites andlamproitesfromwestern Australia:an enriched mantle origin[J].Nature,1983,302(31):333-351.
[20]JochumKP,Arndt NT,Hofmann A W.Nb-Th-Lain komatiites and basalts constraints on komatiite petrogenesis and mantle evolution[J].EarthPlanet Sci Lett,1991,107:272-289.
[21]Li Long,Zheng Yong-fei,Zhou Jian-bo.Dynamic model for Pb isotope evolution in the continental crust of China[J].Acta Petrologica Sinica,2001,17(1):61-68.
[22]常印佛,刘湘培,吴言昌.长江中下游铁铜成矿带[M].北京:地质出版社,1991:1-238.
[23]唐永成,邢凤鸣,吴言昌,等.安徽沿江地区铜金多金属矿床地质[M].北京:地质出版社,1998:1-351.
[24]Pearce J A,Trace element characteristics of lavas fromdestructive plate boundaries[C].Thorps R S.Andesites[M].New York:John Wiley&Sons,1982:525-548.
[25]徐祥,邢凤鸣.安徽沿江地区中生代基性岩稀土元素地球化学特征[J].安徽地质,1999,(92)2:81-89.
[26]王元龙,王焰,张旗,贾秀琴,韩松.铜陵地区中生代中酸性侵入岩的地球化学特征及其成矿-地球动力学意义[J].岩石学报,2004,20(2):325-338.
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[28]赵斌,朱成明,等.岩浆成因夕卡岩的实验证据[J].科学通报,1993,38(21):1986-1989.
[29]Zhang Yue-qiao,Ma Yin-sheng,Yang Song,Shi Wei,Dong Shu-wen.Cenozoic extensional stress evolutionin South China[J].Journal ofGeo-dynamics,2003,36(5):591-613.
[30]闫峻,陈江峰,谢智,等.长江中下游地区蝌蚪山晚中生代玄武岩的地球化学研究:岩石圈地慢性质与演化的制约[J].地球化学,2005,34(5):455-469.
[31]Peccerillo A,et al.Geochemistry of Eocene calc-alkaline volcanic rocks fromthe Kastamenu area northeron Turkey,Contrib[J].Miner Petro,1976,58(1):63-81.
[32]翟裕生,姚书振,林新多,等.长江中下游地区铁、铜等成矿规律研究[J].矿床地质,1992,11(1):1-12.
[33]邢凤鸣,徐祥.铜陵地区高钾钙碱系列侵入岩[J].地球化学,1996,25(1):29-38.
[34]邢凤鸣,赵斌,徐祥,朱成明,赵劲松,蔡恩照.安徽省铜陵地区侵入岩成因的实验研究[J].中国区域地质,1997,16(3):267-274.
[35]滕彦国,刘家铎,张成江,倪师,彭秀红.兰坪盆地及邻区岩浆岩的微量元素地球化学研究[J].成都理工学院学报,2001,21(1):40-44.
[2]董树文,邱瑞龙.安庆月山地区构造作用与岩浆活动[M].北京:地质出版社,1993:15-141.
[3]周涛发,岳书仓.安徽月山地区闪长岩类地质地球化学研究[J].火山地质与矿产,1995,16(3):20-30.
[4]周涛发,岳书仓.安徽月山岩体地球化学特征及成因机理分析[J].高校地质学报,2001,7(1):70-80.
[5]陈江峰,喻钢,杨刚,杨胜洪.安徽沿江江南晚中生代岩浆-成矿年代学格架[J].安徽地质,2005,15(3):161-169.
[6]李波,陈江峰,郑永飞,赵子福,钱卉.安徽月山石英闪长岩氧同位素分馏、Rb-Sr等时线定年与矿物蚀变之间的关系[J].岩石学报,2004,20(5):1185-1192.
[7]邱瑞龙.安徽月山高钾闪长岩岩石学特征及岩石成因探讨[J].地质论评,1992,38(2):98-107.
[8]阎桂林,张鸣,李永涛.安徽安庆月山岩体的磁组构及古地磁特征[J].地球科学,1990,15(6):667-673.
[9]章传玲,林新多,张叔贞.安徽省怀宁月山岩体侵入前缘带构造的控矿规律[J].矿床地质,1994,(增刊):107-109.
[10]束学福.安庆夕卡岩型铁铜矿床地质地球化学特征及铁质来源研究[J].矿物岩石地球化学通报,2004,23(3):219-224.
[11]Le Maltre R W.Some problems of the projection of chemical datainto mineralogica1 classificactions[J].Contr Miner Petro,1976,56:181-189.
[12]黎彤,饶纪龙.中国岩浆岩的平均化学成分[J].地质学报,1963,43(3):271-280.
[13]Le Maitre R W.AClassification ofIgneous Rocks and GlossaryofTerms[M].Blackwell:Oxford,1989,185-193.
[14]Irvine TNand Barager WR A.Aguide to the chemical classification of the common volcanic rocks[J].Canadian Journal of Earth Sciences,1971,8:532~548.
[15]邱家骧,林景仟.岩石化学[M].北京:地质出版社,1991:1-276.
[16]Sun S-S,McDonough WF.Chemical andisotopic systematics of oceanic basalts:implications for mantle composition and processes[J].Geol SocSpec Pub,1989,42:313-345.
[17]Taylor S R,McLennan S M.The geochemical evolution of the continental crust[J].ReviewGeophysics,1995,33:241-265.
[18]Condie KC.Plate Tectonic and Crustal Evolution[M].NewYork:Pergamon press,1982:110-310.
[19]McCullock MT,Jaques AL,Lewis J D.Nd and Sr isotopesin kimberlites andlamproitesfromwestern Australia:an enriched mantle origin[J].Nature,1983,302(31):333-351.
[20]JochumKP,Arndt NT,Hofmann A W.Nb-Th-Lain komatiites and basalts constraints on komatiite petrogenesis and mantle evolution[J].EarthPlanet Sci Lett,1991,107:272-289.
[21]Li Long,Zheng Yong-fei,Zhou Jian-bo.Dynamic model for Pb isotope evolution in the continental crust of China[J].Acta Petrologica Sinica,2001,17(1):61-68.
[22]常印佛,刘湘培,吴言昌.长江中下游铁铜成矿带[M].北京:地质出版社,1991:1-238.
[23]唐永成,邢凤鸣,吴言昌,等.安徽沿江地区铜金多金属矿床地质[M].北京:地质出版社,1998:1-351.
[24]Pearce J A,Trace element characteristics of lavas fromdestructive plate boundaries[C].Thorps R S.Andesites[M].New York:John Wiley&Sons,1982:525-548.
[25]徐祥,邢凤鸣.安徽沿江地区中生代基性岩稀土元素地球化学特征[J].安徽地质,1999,(92)2:81-89.
[26]王元龙,王焰,张旗,贾秀琴,韩松.铜陵地区中生代中酸性侵入岩的地球化学特征及其成矿-地球动力学意义[J].岩石学报,2004,20(2):325-338.
[27]326地质队.安徽省安庆地区成矿条件及铜金铁成矿预测[R].合肥:安徽省地矿局,1990.
[28]赵斌,朱成明,等.岩浆成因夕卡岩的实验证据[J].科学通报,1993,38(21):1986-1989.
[29]Zhang Yue-qiao,Ma Yin-sheng,Yang Song,Shi Wei,Dong Shu-wen.Cenozoic extensional stress evolutionin South China[J].Journal ofGeo-dynamics,2003,36(5):591-613.
[30]闫峻,陈江峰,谢智,等.长江中下游地区蝌蚪山晚中生代玄武岩的地球化学研究:岩石圈地慢性质与演化的制约[J].地球化学,2005,34(5):455-469.
[31]Peccerillo A,et al.Geochemistry of Eocene calc-alkaline volcanic rocks fromthe Kastamenu area northeron Turkey,Contrib[J].Miner Petro,1976,58(1):63-81.
[32]翟裕生,姚书振,林新多,等.长江中下游地区铁、铜等成矿规律研究[J].矿床地质,1992,11(1):1-12.
[33]邢凤鸣,徐祥.铜陵地区高钾钙碱系列侵入岩[J].地球化学,1996,25(1):29-38.
[34]邢凤鸣,赵斌,徐祥,朱成明,赵劲松,蔡恩照.安徽省铜陵地区侵入岩成因的实验研究[J].中国区域地质,1997,16(3):267-274.
[35]滕彦国,刘家铎,张成江,倪师,彭秀红.兰坪盆地及邻区岩浆岩的微量元素地球化学研究[J].成都理工学院学报,2001,21(1):40-44.
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