鄂西地层硒的分布、富硒岩石成因及硒的来源
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摘要
鄂西地区硒元素主要富集在二叠系孤峰组与吴家坪组炭质硅质岩中,而其他地层"黑色岩系"中硒含量却很低。富硒炭质硅质岩微量元素中w(As)和w(Sb)分别是沉积岩丰度的1.65倍和4.22倍,U/Th平均值为7.9、Co/Ni平均值为0.042,稀土元素具有明显Ce的负异常特征,指示了富硒硅质岩以热水成因为主,而微量元素Mo、V含量较高,证明又受到生物因素的叠加影响。岩石La-Th-Sc以及Th-Sc-Zr/10图解表明"黑色岩系"形成于大陆岛弧的构造环境。富Se岩石的Cr元素含量也较高, Cr是典型的地幔元素,表明地幔物质参与了"黑色岩系"的成岩作用。孤峰组炭质硅质岩层间凝灰质黏土岩锆石U-Pb年龄约264 Ma,在时代上与峨眉山玄武岩起始喷发时间一致,表明孤峰组硒的来源与峨眉山玄武岩的持续喷发相关。吴家坪组炭质硅质岩层间凝灰质黏土岩的锆石U-Pb年龄为253～248 Ma,与西伯利亚大火成岩省火山喷发时间高度吻合,说明吴家坪组硒的来源可能与西伯利亚大火成岩省关系密切。
Selenium is mainly concentrated in the carbonaceous siliceous rocks of Permian Gufeng and Wujiaping formations in western Hubei Province, while its content in other "black shale series" is very low. The abundance of As and Sb in the selenium-rich carbonaceous siliceous rocks are 1.65 and 4.22 times more than that in sedimentary abundance, respectively. The average ratio of U/Th and Co/Ni is 7.9 and 0.042, respectively. Ce shows significant negative anomaly. The evidence demonstrates the selenium-rich siliceous rocks are of hydrothermal origin. Moreover, the high contents of Mo and V indicate the role of the biological force in their formation. The La-Th-Sc and Th-Sc-Zr/10 discriminatory plots illustrate that the "black shale series" are formed in the continental arc environment. The selenium-rich rocks also have high contents of Cr, indicating that the mantle material is involved in the formation of "black shale series". The U-Pb age(264 Ma) of tuffaceous claystone interlying between the carbonaceous siliceous rocks of Gufeng Formation is consistent with the eruption time of Emeishan basalt, indicating the Se in Gufeng Formation is likely to be derived from Emeishan basalts. The U-Pb ages(253-248 Ma) of tuffaceous claystone interlying between the carbonaceous siliceous rocks of Wujiaping Formation is consistent with the eruption time of Siberian large igneous province, indicating the Se of Wujiaping Formation is associated with the Siberian large igneous province.
Selenium is mainly concentrated in the carbonaceous siliceous rocks of Permian Gufeng and Wujiaping formations in western Hubei Province, while its content in other "black shale series" is very low. The abundance of As and Sb in the selenium-rich carbonaceous siliceous rocks are 1.65 and 4.22 times more than that in sedimentary abundance, respectively. The average ratio of U/Th and Co/Ni is 7.9 and 0.042, respectively. Ce shows significant negative anomaly. The evidence demonstrates the selenium-rich siliceous rocks are of hydrothermal origin. Moreover, the high contents of Mo and V indicate the role of the biological force in their formation. The La-Th-Sc and Th-Sc-Zr/10 discriminatory plots illustrate that the "black shale series" are formed in the continental arc environment. The selenium-rich rocks also have high contents of Cr, indicating that the mantle material is involved in the formation of "black shale series". The U-Pb age(264 Ma) of tuffaceous claystone interlying between the carbonaceous siliceous rocks of Gufeng Formation is consistent with the eruption time of Emeishan basalt, indicating the Se in Gufeng Formation is likely to be derived from Emeishan basalts. The U-Pb ages(253-248 Ma) of tuffaceous claystone interlying between the carbonaceous siliceous rocks of Wujiaping Formation is consistent with the eruption time of Siberian large igneous province, indicating the Se of Wujiaping Formation is associated with the Siberian large igneous province.
引文
[1] 朱建明,郑宝山,刘世荣,等.多形态自然硒的首次发现及其成因初探[J].矿物学报,2000,20(4):337-341.
[2] 朱建明,秦海波,罗泰义,等.西南寒武、二叠系富硒炭质岩中硒结合态的比较研究[J].高校地质学报,2007,13(1):69-74.
[3] 钱汉东,赵振华,郑翔,等.蓝硒铜矿的发现及其地质意义[J].地质学报,2006,80(11):1706-1710.
[4] 夏邦栋,钟立荣,方中,等.下扬子区早二叠世孤峰组层状硅质岩成因[J].地质学报,1995,69(2):125-137.
[5] 曾普胜,杨竹森,蒙义峰,等.安徽铜陵矿集区硅质岩成因及意义[J].地质论评,2004,50(2):153-161.
[6] 付伟,周永章,杨志军,等.湘中南二叠系孤峰组硅质岩的成因属性及其地球动力学指示意义[J].矿物岩石地球化学通报,2004,23(4):292-300.
[7] 杨水源,姚静.安徽巢湖平顶山中二叠统孤峰组硅质岩的地球化学特征及成因[J].高校地质学报,2008,14(1):39-48.
[8] Kametaka M,Takebe M,Nagai H,et al.Sedimentary environments of the Middle Permian phosphoritechert complex from the northeastern Yangtze Platform,China; the Gufeng Formation:A continental shelf radiolarian chert[J].Sedimentary Geology,2005,174:197-222.
[9] 冯彩霞,刘家军,刘燊,等.鱼塘坝硒矿硅质岩的地球化学特征及成因[J].沉积学报,2002,20(4):727-732.
[10] 姚林波,高振敏,杨竹森,等.鱼塘坝硒矿床富硒硅质岩的成因[J].中国科学:地球科学,2002,32(1):54-63.
[11] 郑翔,钱汉东,吴雪枚.湖北恩施双河硒矿床地球化学特征及成因探讨[J].高校地质学报,2006,12(1):83-92.
[12] 田洋,赵小明,牛志军,等.鄂西南利川二叠纪吴家坪组硅质岩成因及沉积环境[J].沉积学报,2013,31(4):590-599.
[13] 牛志军,徐安武,段其发,等.湖北建始北部二叠纪地层硒的来源与富集[J].中国区域地质,2000,19(4):396-401.
[14] 牟传龙,邱东洲,王立全,等.湘鄂赣二叠纪岩相古地理研究[J].岩相古地理,1997,17(6):1-21.
[15] 王剑,段太忠,谢渊,等.扬子地块东南缘大地构造演化及其油气地质意义[J].地质通报,2012,31(11):1739-1749.
[16] Hassan R,Tarek A,MiklósFári.Selenium and nano-selenium in agroecosystems[J].Environ.Chem.Lett.,2014,12:495-510.
[17] 李朋,何仁亮,宗维,等.鄂西恩施奥陶系-志留系界线附近沉积地球化学与沉积环境[J].地质科技情报,2018,37(2):17-23.
[18] 黎彤,郭范.元素丰度表[J].地质与勘探,1981,51(11):60-67.
[19] Marchig V,Gundlach H,Moller P,et al.Some geochemistry indictors for discrimination between diagenetic and hydrothermal metalliferous sediments[J].Marine Geology,1982,50(3):241-256.
[20] Rona P A.Criteria for recognition of hydrothermal mineral deposits in ocean crust[J].Econonic Geology,1987,73:135-160.
[21] Bostroem K,Rydell H,Joensuu O.Langban:An exhalative sedimentary deposit?[J].Economic Geology,1979,74(5):1002-1011.
[22] Bhatia M R,Crook K A W.Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins[J].Contrib.Mineral.Petrol.,1986,92:181-193.
[23] Fleet A J.Hydrothermal and hydrogenous ferromanganese deposits[C]//Rona P A.Hydrothermal process at sea floor spreading centres.Amsterdam:Elsevier Science Publishers B V,1983:537-570.
[24] Shimizu H,Masuda A.Cerium in chert as an indication of marine environment of its formation[J].Nature,1977,266:346-348.
[25] Haskin L A,Wildeman T R,Haskin M A.An accurate procedure for the determination of rare earth by neutron activation[J].Journal of Radioanalytical and Nuclear Chemistry,1968,1(4):337-348.
[26] He B,Xu Y G,Huang X L,et al.Age and duration of the Emeishan flood volcanism,SW China:Geochemistry and SHRIMP zircon U-Pb dating of silicic ignimbrites,post-vol-canic Xuanwei Formation and clay tuff at the Chaotian section[J].Earth and Planetary Science Letters,2007,255(3/4):306-323.
[27] Zhou M F,Robinson P T,Michaellesher C,et al.Geochemistry,petrogenesis and metallogenesis of the Panzhihua gab-broic layered intrusion and associated Fe-T-i V oxide deposits,Sichuan Province,SW China[J].Journal of Petrology,2005,46:2253-2280.
[28] Zhou M F,Arndt N T,Malpas J,et al.Two magma series and associated ore deposit types in the Permian Emeishan large igneous province,SW China[J].Lithos,2007,103(3/4):352-368.
[29] Fan W M,Zhang C H,Wang Y J,et al.Geochronology and geochemistry of Permian basalts in western Guangxi Province,Southwest China:Evidence for plume-lithosphere interaction[J].Lithos,2008,102(1/2):218-236.
[30] Qiu Z,Wang Q C.Geochemical evidence for submarine hydrothermal origin of the Middle-Upper Permian chert in Laibin of Guangxi,China[J].Science in China:Series D,2011,54(7):1011-1023.
[31] Fan W M,Wang Y J,Peng T P,et al.Ar-Ar and U-Pb geo-chronology of Late Paleozoic basalts in western Guangxi and its constraints on the eruption age of Emeishan basalt magmatism[J].Science Bulletin,2004,49(21):2317-2328.
[32] 朱江,张招崇,候通,等.贵州盘县峨眉山玄武岩系顶部凝灰岩 LA-ICP-MS锆石 U-Pb年龄:对峨眉山大火成岩省与生物大规模灭绝关系的约束[J].岩石学报,2011,27(9):2743-2751.
[33] Saunder A D,Jones S M,Morgan L A,et al.Regional uplift associated with continental large igneous provinces:The role of mantle plumes and the lithosphere[J].Chemical Geology,2007,241:282-318.
[34] Courtillot V E,Renne P R.On the ages of flood basalt events[J].Comptes Rendus Geoscience,2003,335:113-140.
[35] 夏林圻,徐学义,李向民,等.亚洲3个大火成岩省(峨眉山、西伯利亚、德干)对比研究[J].西北地质,2012,45(2):1-26.
[36] 张召崇,王福生,郝艳丽,等.峨眉山大火成岩省和西伯利亚大火成岩省地球化学特征的比较及其成因启示[J].岩石矿物学杂志,2005,24(1):12-20.
[37] Wooden J L,Czamanske G K,Fedorenko V A,et al.Isotopic and trace-element constraints on mantle and crustal contributions to Siberian continental flood basalts,Noril'sk area,Siberia[J].Geochim.and Cosmochim.Acta,1993,57:3677-3704.
[38] Xu Y G,He B,Chung S L,et al.Geologic,geochemical,and geophysical consequences of plumeinvolvement in the Emeishan flood-basalt province[J].Geology,2004,32:917-920.
[39] Zhang Z C,Wang F S.Geochemistry of two types of basalts of the Emeishan basaltic Province:Evidence for mantle plumelithosphere interaction[J].Acta Geol.Sinica,2002,76(2):138-147.
[2] 朱建明,秦海波,罗泰义,等.西南寒武、二叠系富硒炭质岩中硒结合态的比较研究[J].高校地质学报,2007,13(1):69-74.
[3] 钱汉东,赵振华,郑翔,等.蓝硒铜矿的发现及其地质意义[J].地质学报,2006,80(11):1706-1710.
[4] 夏邦栋,钟立荣,方中,等.下扬子区早二叠世孤峰组层状硅质岩成因[J].地质学报,1995,69(2):125-137.
[5] 曾普胜,杨竹森,蒙义峰,等.安徽铜陵矿集区硅质岩成因及意义[J].地质论评,2004,50(2):153-161.
[6] 付伟,周永章,杨志军,等.湘中南二叠系孤峰组硅质岩的成因属性及其地球动力学指示意义[J].矿物岩石地球化学通报,2004,23(4):292-300.
[7] 杨水源,姚静.安徽巢湖平顶山中二叠统孤峰组硅质岩的地球化学特征及成因[J].高校地质学报,2008,14(1):39-48.
[8] Kametaka M,Takebe M,Nagai H,et al.Sedimentary environments of the Middle Permian phosphoritechert complex from the northeastern Yangtze Platform,China; the Gufeng Formation:A continental shelf radiolarian chert[J].Sedimentary Geology,2005,174:197-222.
[9] 冯彩霞,刘家军,刘燊,等.鱼塘坝硒矿硅质岩的地球化学特征及成因[J].沉积学报,2002,20(4):727-732.
[10] 姚林波,高振敏,杨竹森,等.鱼塘坝硒矿床富硒硅质岩的成因[J].中国科学:地球科学,2002,32(1):54-63.
[11] 郑翔,钱汉东,吴雪枚.湖北恩施双河硒矿床地球化学特征及成因探讨[J].高校地质学报,2006,12(1):83-92.
[12] 田洋,赵小明,牛志军,等.鄂西南利川二叠纪吴家坪组硅质岩成因及沉积环境[J].沉积学报,2013,31(4):590-599.
[13] 牛志军,徐安武,段其发,等.湖北建始北部二叠纪地层硒的来源与富集[J].中国区域地质,2000,19(4):396-401.
[14] 牟传龙,邱东洲,王立全,等.湘鄂赣二叠纪岩相古地理研究[J].岩相古地理,1997,17(6):1-21.
[15] 王剑,段太忠,谢渊,等.扬子地块东南缘大地构造演化及其油气地质意义[J].地质通报,2012,31(11):1739-1749.
[16] Hassan R,Tarek A,MiklósFári.Selenium and nano-selenium in agroecosystems[J].Environ.Chem.Lett.,2014,12:495-510.
[17] 李朋,何仁亮,宗维,等.鄂西恩施奥陶系-志留系界线附近沉积地球化学与沉积环境[J].地质科技情报,2018,37(2):17-23.
[18] 黎彤,郭范.元素丰度表[J].地质与勘探,1981,51(11):60-67.
[19] Marchig V,Gundlach H,Moller P,et al.Some geochemistry indictors for discrimination between diagenetic and hydrothermal metalliferous sediments[J].Marine Geology,1982,50(3):241-256.
[20] Rona P A.Criteria for recognition of hydrothermal mineral deposits in ocean crust[J].Econonic Geology,1987,73:135-160.
[21] Bostroem K,Rydell H,Joensuu O.Langban:An exhalative sedimentary deposit?[J].Economic Geology,1979,74(5):1002-1011.
[22] Bhatia M R,Crook K A W.Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins[J].Contrib.Mineral.Petrol.,1986,92:181-193.
[23] Fleet A J.Hydrothermal and hydrogenous ferromanganese deposits[C]//Rona P A.Hydrothermal process at sea floor spreading centres.Amsterdam:Elsevier Science Publishers B V,1983:537-570.
[24] Shimizu H,Masuda A.Cerium in chert as an indication of marine environment of its formation[J].Nature,1977,266:346-348.
[25] Haskin L A,Wildeman T R,Haskin M A.An accurate procedure for the determination of rare earth by neutron activation[J].Journal of Radioanalytical and Nuclear Chemistry,1968,1(4):337-348.
[26] He B,Xu Y G,Huang X L,et al.Age and duration of the Emeishan flood volcanism,SW China:Geochemistry and SHRIMP zircon U-Pb dating of silicic ignimbrites,post-vol-canic Xuanwei Formation and clay tuff at the Chaotian section[J].Earth and Planetary Science Letters,2007,255(3/4):306-323.
[27] Zhou M F,Robinson P T,Michaellesher C,et al.Geochemistry,petrogenesis and metallogenesis of the Panzhihua gab-broic layered intrusion and associated Fe-T-i V oxide deposits,Sichuan Province,SW China[J].Journal of Petrology,2005,46:2253-2280.
[28] Zhou M F,Arndt N T,Malpas J,et al.Two magma series and associated ore deposit types in the Permian Emeishan large igneous province,SW China[J].Lithos,2007,103(3/4):352-368.
[29] Fan W M,Zhang C H,Wang Y J,et al.Geochronology and geochemistry of Permian basalts in western Guangxi Province,Southwest China:Evidence for plume-lithosphere interaction[J].Lithos,2008,102(1/2):218-236.
[30] Qiu Z,Wang Q C.Geochemical evidence for submarine hydrothermal origin of the Middle-Upper Permian chert in Laibin of Guangxi,China[J].Science in China:Series D,2011,54(7):1011-1023.
[31] Fan W M,Wang Y J,Peng T P,et al.Ar-Ar and U-Pb geo-chronology of Late Paleozoic basalts in western Guangxi and its constraints on the eruption age of Emeishan basalt magmatism[J].Science Bulletin,2004,49(21):2317-2328.
[32] 朱江,张招崇,候通,等.贵州盘县峨眉山玄武岩系顶部凝灰岩 LA-ICP-MS锆石 U-Pb年龄:对峨眉山大火成岩省与生物大规模灭绝关系的约束[J].岩石学报,2011,27(9):2743-2751.
[33] Saunder A D,Jones S M,Morgan L A,et al.Regional uplift associated with continental large igneous provinces:The role of mantle plumes and the lithosphere[J].Chemical Geology,2007,241:282-318.
[34] Courtillot V E,Renne P R.On the ages of flood basalt events[J].Comptes Rendus Geoscience,2003,335:113-140.
[35] 夏林圻,徐学义,李向民,等.亚洲3个大火成岩省(峨眉山、西伯利亚、德干)对比研究[J].西北地质,2012,45(2):1-26.
[36] 张召崇,王福生,郝艳丽,等.峨眉山大火成岩省和西伯利亚大火成岩省地球化学特征的比较及其成因启示[J].岩石矿物学杂志,2005,24(1):12-20.
[37] Wooden J L,Czamanske G K,Fedorenko V A,et al.Isotopic and trace-element constraints on mantle and crustal contributions to Siberian continental flood basalts,Noril'sk area,Siberia[J].Geochim.and Cosmochim.Acta,1993,57:3677-3704.
[38] Xu Y G,He B,Chung S L,et al.Geologic,geochemical,and geophysical consequences of plumeinvolvement in the Emeishan flood-basalt province[J].Geology,2004,32:917-920.
[39] Zhang Z C,Wang F S.Geochemistry of two types of basalts of the Emeishan basaltic Province:Evidence for mantle plumelithosphere interaction[J].Acta Geol.Sinica,2002,76(2):138-147.
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