江西武功山岩浆核杂岩基本特征
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摘要
江西武功山地区发育的穹窿状地质体,其组成结构和成因机制与经典的变质核杂岩似乎有相似之处,也由内核和外壳组成,并具三层式结构特征,但其内核主要为花岗岩,核内和核外的地层几乎同时代,并无"古老变质核",它的形成机制主要是岩浆底辟强力侵位引起地壳局部隆升和伸展滑覆。所以,将其改称为"武功山岩浆核杂岩"更为贴切。文章主要从武功山穹窿状地质的组成和形成时代及成因机制等方面,阐述了它的基本特征,论证了将其改称为"岩浆核杂岩"的理由,并探讨了滑覆构造的找矿意义。
The dome-shaped geological body was developed at the Wugongshan area,Jiangxi province,with its structure and genetic mechanism similar to that of classic metamorphic core complexes.It is comprised of core and crust with characteristics of a three-tier structure.However,its core consists mainly of granite while strata of the core and shell are almost contemporaries in age.There is no "ancient metamorphic core".Its formation mechanism is local crustal uplift and stretch slip triggered by strong emplacement of magma diapir.Therefore,it is more appropriate to rename it "Wugongshan magma core complex".Based on the composition,formation age and genetic mechanism of dome-shaped geological structure at the Wugongshan area,this study analyzes its basic characteristics,presents the reason why it is renamed the "the magma core complex",and finally discusses the prospecting significance of decollement.
The dome-shaped geological body was developed at the Wugongshan area,Jiangxi province,with its structure and genetic mechanism similar to that of classic metamorphic core complexes.It is comprised of core and crust with characteristics of a three-tier structure.However,its core consists mainly of granite while strata of the core and shell are almost contemporaries in age.There is no "ancient metamorphic core".Its formation mechanism is local crustal uplift and stretch slip triggered by strong emplacement of magma diapir.Therefore,it is more appropriate to rename it "Wugongshan magma core complex".Based on the composition,formation age and genetic mechanism of dome-shaped geological structure at the Wugongshan area,this study analyzes its basic characteristics,presents the reason why it is renamed the "the magma core complex",and finally discusses the prospecting significance of decollement.
引文
M Faure,Y Sun,L Shu,P Monie,J Charvet.1996.Extensional tectonics within a subducton-type orogen.the case study of the Wugongshan dome Jiangxi province,southeastern China.Tectonoophysics,263(s 1~4):77~106.
Liu Jiayuan.2003.Compound massif and complex massif-the two basic forms of the massif association of granitoid and their significance.Contributions to Geology and Mineral Resources Research,18(3):143~148(in Chinese with English abstract).
Liu Xiyuan,Zhong Dahong,Wu Fujiang,Xie Qinghui.2003a.Features of extensional structure in the north margin of Hunan Plate(Pingxiang section in Jiangxi province).Resouces survey and environment,24(1):51~56(in Chinese with English abstract).
Liu Xiyuan,Zhong Cunti.2003b.Discussion of the Structure problem in Wugongshan region in western Jiangxi Province.Journal of east China geological institute,26(3):249~253(in Chinese with English abstract).
Liu Xiyuan.2003.Mesozoic-Cenozoic tectonic character and its geological meaning in Pingxiang,Jiangxi Province.Geological Survey and research,26(4):233~240(in Chinese with English abstract).
Lou Fasheng.Shu Liangshu,Yu Jinhai,Wang Dezi.2002.Petrological and geochemical characteristics and origin of the Wugongshan dome granite,Jiangxi.Geological Review,48(1):80~88(in Chinese with English abstract).
Shu Liangshu,Sun Yan,Wang Dezi.1998.Mesozoic doming extensional tectonics of Wugongshan,South China.Science in China(Series D),28(5):431~438(in Chinese with English abstract).
Sun Yan,Shu Lianshu.Faure M.Charvet J.1997.Tectonic development of the metamorphic core complex of the Wugongshan in the Northern Jiangxi Province.Journal of Nanjing University(Natural Sciences),33(3):447~449(in Chinese with English abstract).
Tang Jiangfu.Wang Ximing.1991.Tectonic deformation and Geological survey of the Wugongshan metamorphic terrane.Wuhan Publ.house China~Univ.Geosic,1~95(in Chinese with English abstract).
Wu Fujiangi Zhong Cungen.Zhong Dahong.2001.Basic features and age of the extensional gliding nappe structure of Wugongshan magmatic themal dome in Jiangxi.Jiangxi Geology,15(3):161~165(in Chinese with English abstract).
Xiao Xiuwu.1993.Pre-test of Metamorphic Core complexes of Wugongshan.Jiangxi Geology.7(1):62~72(in Chinese with English abstract).
Yu Anguang.2000.Extensional tectonics in Shimian-Mianning district.Sichuan.Geological Bulletin of China.19(1):20~25(in Chinese with English abstract).
江西省地质矿产局.1984.江西省区域地质志.北京:地质出版社.419~420.
刘家远.2003.复式岩体和杂岩体-花岗岩类岩体组合的两种基本形式及其意义.地质找矿认丛,18(3):143~148.
刘细元,钟达洪,吴富江,谢清辉.2003a.华南板块北缘(江西萍乡)伸展构造特征.资源调查与环境,24(1):51~56.
刘细元.衷存堤.2003b.关于赣西武功山地区构造问题的讨论.华东地质学院学报.26(3):249~253.
刘细元.2003.江西萍乡一带中—新生代构造特征及其意义.地质调查与研究,26(4):233~240.
楼法生,舒良树,余津海,王德滋.2002.江西武功山穹隆花岗岩岩石地球化学特征与成因.地质论评。28(1):80~88.
舒良树,孙岩,王德滋.1998.华南武功山中生代伸展构造.中国科学(D辑),28(5):431~438.
孙岩,舒良树,Faure M,Charvet J.1997.赣北地区武功山变质核杂岩的构造发育.南京大学学报(自然科学),33(3):447~449.
汤家富,王希明.1991.江西武功山地区中浅变质岩区1:5万区域调查方法研究.武汉:中国地质大学出版社,1~95.
吴富江,钟春根,钟达洪.2001.江西武功山岩浆热穹窿伸展滑覆构造的基本特征及形成时代.江西地质,15(3):163~165.
肖修武.1993.武功山变质核杂岩初探.江西地质,7(1):62~72.
喻安光.2000.四川石棉—冕宁地区之伸展构造.中国区域地质,19(1):20~25.
Liu Jiayuan.2003.Compound massif and complex massif-the two basic forms of the massif association of granitoid and their significance.Contributions to Geology and Mineral Resources Research,18(3):143~148(in Chinese with English abstract).
Liu Xiyuan,Zhong Dahong,Wu Fujiang,Xie Qinghui.2003a.Features of extensional structure in the north margin of Hunan Plate(Pingxiang section in Jiangxi province).Resouces survey and environment,24(1):51~56(in Chinese with English abstract).
Liu Xiyuan,Zhong Cunti.2003b.Discussion of the Structure problem in Wugongshan region in western Jiangxi Province.Journal of east China geological institute,26(3):249~253(in Chinese with English abstract).
Liu Xiyuan.2003.Mesozoic-Cenozoic tectonic character and its geological meaning in Pingxiang,Jiangxi Province.Geological Survey and research,26(4):233~240(in Chinese with English abstract).
Lou Fasheng.Shu Liangshu,Yu Jinhai,Wang Dezi.2002.Petrological and geochemical characteristics and origin of the Wugongshan dome granite,Jiangxi.Geological Review,48(1):80~88(in Chinese with English abstract).
Shu Liangshu,Sun Yan,Wang Dezi.1998.Mesozoic doming extensional tectonics of Wugongshan,South China.Science in China(Series D),28(5):431~438(in Chinese with English abstract).
Sun Yan,Shu Lianshu.Faure M.Charvet J.1997.Tectonic development of the metamorphic core complex of the Wugongshan in the Northern Jiangxi Province.Journal of Nanjing University(Natural Sciences),33(3):447~449(in Chinese with English abstract).
Tang Jiangfu.Wang Ximing.1991.Tectonic deformation and Geological survey of the Wugongshan metamorphic terrane.Wuhan Publ.house China~Univ.Geosic,1~95(in Chinese with English abstract).
Wu Fujiangi Zhong Cungen.Zhong Dahong.2001.Basic features and age of the extensional gliding nappe structure of Wugongshan magmatic themal dome in Jiangxi.Jiangxi Geology,15(3):161~165(in Chinese with English abstract).
Xiao Xiuwu.1993.Pre-test of Metamorphic Core complexes of Wugongshan.Jiangxi Geology.7(1):62~72(in Chinese with English abstract).
Yu Anguang.2000.Extensional tectonics in Shimian-Mianning district.Sichuan.Geological Bulletin of China.19(1):20~25(in Chinese with English abstract).
江西省地质矿产局.1984.江西省区域地质志.北京:地质出版社.419~420.
刘家远.2003.复式岩体和杂岩体-花岗岩类岩体组合的两种基本形式及其意义.地质找矿认丛,18(3):143~148.
刘细元,钟达洪,吴富江,谢清辉.2003a.华南板块北缘(江西萍乡)伸展构造特征.资源调查与环境,24(1):51~56.
刘细元.衷存堤.2003b.关于赣西武功山地区构造问题的讨论.华东地质学院学报.26(3):249~253.
刘细元.2003.江西萍乡一带中—新生代构造特征及其意义.地质调查与研究,26(4):233~240.
楼法生,舒良树,余津海,王德滋.2002.江西武功山穹隆花岗岩岩石地球化学特征与成因.地质论评。28(1):80~88.
舒良树,孙岩,王德滋.1998.华南武功山中生代伸展构造.中国科学(D辑),28(5):431~438.
孙岩,舒良树,Faure M,Charvet J.1997.赣北地区武功山变质核杂岩的构造发育.南京大学学报(自然科学),33(3):447~449.
汤家富,王希明.1991.江西武功山地区中浅变质岩区1:5万区域调查方法研究.武汉:中国地质大学出版社,1~95.
吴富江,钟春根,钟达洪.2001.江西武功山岩浆热穹窿伸展滑覆构造的基本特征及形成时代.江西地质,15(3):163~165.
肖修武.1993.武功山变质核杂岩初探.江西地质,7(1):62~72.
喻安光.2000.四川石棉—冕宁地区之伸展构造.中国区域地质,19(1):20~25.
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