鄂尔多斯地块南缘中元古界沉积岩地球化学特征
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摘要
由于缺少足够的年代学数据,鄂尔多斯地块南缘不同分区中元古代地层对比研究较为薄弱。通过分析沉积岩微量元素分布特征,对鄂尔多斯地块南缘不同地区长城纪泥岩沉积物源、沉积环境和构造背景,以及蓟县纪古地理环境进行了研究。结果表明:①洛南和中条山地区沉积物源均来自于沉积岩、钙质泥岩和熊耳群碱性玄武岩;②长城纪鄂尔多斯地块南缘受到熊耳裂陷的伸展作用的同时,还可能受北秦岭古洋盆向华北陆块俯冲作用的影响;③岐山地区蓟县系碳酸盐岩稀土元素的分布特征与古地理环境之间有很好的关联性;④洛南地区Sr/Ba比值能够反映中元古代相对海平面的升降,岐山地区Sr/Ba比值大小与沉积环境相匹配;⑤鄂尔多斯地块南缘长城纪和蓟县纪都存在适于烃源岩发育的古环境。
Due to the lack of chronology data, few studies are reported about the Mesoproterozoic strata correlation in different zones of the southern margin of Ordos Block. This study investigates the tectonic setting, depositional environments, sediment provenances of the southern margin of Ordos Block in Changcheng Period as well as the paleogeographic environments in Jixian Period by the distribution characteristics of trace elements in sedimentary rocks. The analysis of the experiment results produces the following conclusions. Firstly, the sediment provenances of Luonan and Zhongtiaoshan are sedimentary rocks, calcareous mudstone and alkali basalts of Xiong'er Group. Secondly, the southern margin of Ordos Block may be influenced by the extension from Xiong'er rift and suduction from Northern Qinling paleo-ocenic crust thrusting toward North China Block. Thirdly, the distribution pattern of rare earth elements of Jixian System is comparable with depositional model of continental shelf margin′s in Qishan area. Fourthly, variations on Sr/Ba ratio value coincide with the relative sea level changes in Luonan area, and match depositional environments changes in Qishan area. Lastly, the southern margin of Ordos Block′s paleoenvironment benefits the formation of hydrocarbon source rocks in Changcheng Period and Jixian Period.
Due to the lack of chronology data, few studies are reported about the Mesoproterozoic strata correlation in different zones of the southern margin of Ordos Block. This study investigates the tectonic setting, depositional environments, sediment provenances of the southern margin of Ordos Block in Changcheng Period as well as the paleogeographic environments in Jixian Period by the distribution characteristics of trace elements in sedimentary rocks. The analysis of the experiment results produces the following conclusions. Firstly, the sediment provenances of Luonan and Zhongtiaoshan are sedimentary rocks, calcareous mudstone and alkali basalts of Xiong'er Group. Secondly, the southern margin of Ordos Block may be influenced by the extension from Xiong'er rift and suduction from Northern Qinling paleo-ocenic crust thrusting toward North China Block. Thirdly, the distribution pattern of rare earth elements of Jixian System is comparable with depositional model of continental shelf margin′s in Qishan area. Fourthly, variations on Sr/Ba ratio value coincide with the relative sea level changes in Luonan area, and match depositional environments changes in Qishan area. Lastly, the southern margin of Ordos Block′s paleoenvironment benefits the formation of hydrocarbon source rocks in Changcheng Period and Jixian Period.
引文
[1] 陈衍景,富士谷,强立志.熊耳群和西阳河群的构造背景[J].地质论评,1992,38(4):325-333.
[2] Cui Minli,Zhang Lianchang,Zhang Baolin,et al.Geochemistry of 1.78 Ga A-type granites along the southern margin of the North China Craton:Implications for Xiong′er magmatism during the break-up of the supercontinent Columbia[J].International Geology Review,2013,55(4):496-509.
[3] He Yanhong,Zhao Guochun,Sun Min.Geochemical and isotopic study of the Xiong’er volcanic rocks at the southern margin of the North China Craton:Petrogenesis and tectonic implications [J].Journal of Geology,2010,118(4):417-433.
[4] He Yanhong,Zhao Guochun,Sun Min,et al.Petrogenesis and tectonic setting of volcanic rocks in the Xiaoshan and Waifangshan areas along the southern margin of the North China Craton:Constraints from bulk-rock geochemistry and Sr-Nd isotopic composition [J].Lithos,2010,114(1/2):186-199.
[5] 胡受奚,林潜龙.华北与华南古板块拼合带地质和成矿[M].南京:南京大学出版社,1988:71-107.
[6] 贾承造.东秦岭板块构造[M].南京:南京大学出版社,1988.
[7] Kusky T M,Li Jianghai.Paleoproterozoic tectonic evolution of the North China Craton[J].Journal of Asian Earth Sciences,2003,22(4):383-397.
[8] Peng Peng.Reconstruction and interpretation of giant mafic dyke swarms:A case study of 1.78 Ga magmatism in the North China Craton[C]//Kusky T,Zhai M G,Xiao W J.The evolving continents:Understanding processes of continental growth.London:Geological Society,Special Publications,2010,338:163-178.
[9] 孙枢,张国伟,陈志明.华北断块南部前寒武纪地质演化[M].北京:冶金工业出版社,1985.
[10] Zhao Guochun,Sun Min,Wilde S A,et al.Assembly,accretion and breakup of the Paleo-Mesoproterozoic Columbia Supercontinent:Records in the North China Craton[J].Gondwana Research,2003,6(3):417-434.
[11] Zhao Guochun,He Yanhong,Sun Min.The Xiong'er volcanic belt at the southern margin of the North China Craton:Petrographic and geochemical evidence for its outboard position in the Paleo-Mesoproterozoic Columbia Supercontinent[J].Gondwana Research,2009,16(2):170-181.
[12] Zhao Taiping,Zhou Meifu.Geochemical constraints on the tectonic setting of Paleo-proterozoic A-type granites in the southern margin of the North China Craton[J].Journal of Asian Earth Sciences,2009,36(2):183-195.
[13] 翟明国,胡波,彭澎,等.华北中-新元古代的岩浆作用与多期裂谷事[J].地学前缘,2014,21(1):100-119
[14] Zhai Mingguo,Bian Aiguo,Zhao Taiping.The amalgamation of the supercontinent of North China Craton at the end of Neo-Archaean and its breakup during Late Palaeoproterozoic and Meso-Proterozoic[J].Science in China:Series D,2000,43(1):219-232.
[15] 陕西省地质矿产局.陕西省区域地质志[M].北京:地质出版社,1989.
[16] Chen Youzhi,Fu Xiaofei,Xiao Ancheng,et al.Type and evolution of carbonate platforms in Jixian Period Mesoproterozoic:Southwestern margin of Ordos Basin[J].Journal of Petroleum Exploration and Production Technology,2016,6(4):555-568.
[17] 邓坤,张哨楠,周立发,等.鄂尔多斯盆地西南缘蓟县系沉积环境与生烃潜力[J].天然气工业,2009,29(3):21-24.
[18] 李荣西,梁积伟,翁凯.鄂尔多斯盆地西南部蓟县系古油藏沥青[J].石油勘探与开发,2011,38(2):168-172.
[19] 李钦仲,杨应章,贾金昌.华北地台南缘 (陕西部分) 晚前寒武纪地层研究[C]//佚名.中国晚前寒武纪地区研究成果[M].西安:西安交通大学出版社,1985.
[20] Baioumy H M,Gilg A,Taubald H.Mineralogy and geochemistry of the sedimentary Kaolin deposits from Sinai,Egypt:Implications for control by the source rocks[J].Clays and Clay Minerals,2012,60(6):633-654.
[21] 白瑾.中国早前寒武纪地壳演化[M].北京:地质出版社,1993.
[22] 陈友智,付金华,杨高印,等.鄂尔多斯地块中元古代长城纪盆地属性研究[J].岩石学报,2016,32(3):856-864.
[23] 汤锡元,徐黎明,卢金城,等.陕甘宁盆地及其周缘地区结晶基底及深部地质研究[R].西安:长庆石油勘探局勘探开发研究院,1993.
[24] 张抗.论贺兰山裂堑[C]//佚名.鄂尔多斯盆地西缘地区石油地质论文集.呼和浩特:内蒙古人民出版社,1983:29-40.
[25] 武铁山.华北晚前寒武纪(中、新元古代)岩石地层单位及多重划分对比[J].中国地质,2002,29(2):147-154.
[26] 邸领军.鄂尔多斯盆地基底演化及沉积盖层相关问题的探究[D].西安:西北大学,2003.
[27] Dong Yunpeng,Zhao Yang,Liu Xiaoming,et al.Neoproterozoic amalgamation of the Northern Qinling terrain to the North China Craton:Constraints from geochronology and geochemistry of the Kuanping ophiolite[J].Precambrian Research,2014,255:77-95.
[28] 李天斌,张学文,王成,等.北祁连山东段海原一带海原群变质岩原岩恢复及其构造背景[J].地质通报,2006,25(1):194-203.
[29] 山西省地质矿产局.山西省区域地质志[M].北京:地质出版社,1989:95-115.
[30] 高剑峰,陆建军,赖鸣远,等.岩石样品中微量元素的高分辨率等离子质谱分析[J].南京大学学报:自然科学版,2003,39(6):844-850.
[31] Muarry R W,Brink M R,Jones D L,et al.Rare earth elements as indicators of different marinade positional environment in chert and shale [J].Geology,1990,18(3):268-271.
[32] Taylor S R,Mclenann S M.The continental crust:Its composition and evolution[M].London:Blackwell,1985.
[33] Allegre C J,Minster J F.Quantitative models of trace element behavior in magmatic processes[J].Earth and Planetary Science Letters,1978,38:1-25.
[34] 程裕淇.中国区域地质概论[M].北京:地质出版社,1994.
[35] Bhatia M R,Crook K A W.Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins[J].Contributions to Mineralogy and Petrology,1986,92(2):181-193.
[36] 董云鹏,张国伟,朱炳泉.北秦岭构造属性与元古代构造演化[J].地球学报,2003,24(1):3-10.
[37] Banner J L,Hanson G N,Meyers W J.Rare earth element and Nd isotopic variations in regionally extensive dolomites from the Burlington:Keokuk Formation(Mississippian):Implications for REE mobility during carbonate diagenesis [J].Journal of Sedimentary Research,1988,58(3):415-432.
[38] Qing H,Mountjoy E.Rare earth element geochemistry of dolomites in the Middle Devonian Presquile barrie,Westem Canada Sedimentary Basin:Implications for fluid-rock ratios during dolomitization [J].Sedimentology,1994,41(4):787-804.
[39] Henderson P.Rare earth element geochemistry [M].Amsterdam:Elsevier,1984.
[40] Balashov Y A,Khitrov L M.Geochimi.Int.[J].Geochemistry International,1961,9:877.
[41] Goldberg E D,Koide M ,Schmit T R A,et al.Rare-earth dist ribut ions in the marine environment [J].Journal Geophysical Research,1963,68:4209-4217.
[42] Goodwin A M.Principles of Precambrian geology[M].[S.l.]:Academic Press,1996:269-272.
[43] Canfield D E.A new model for Proterozoic ocean chemistry [J].Nature,1998,396:450-453.
[44] 刘宝珺,曾允孚.岩相古地理基础和工作方法[M].北京:地质出版社,1985.
[45] 同济大学海洋地质系.海、陆相地层辨认标志[M].北京:科学出版社,1980.
[46] 卢勉,陈友智,吴高平,等.中元古代鄂尔多斯盆地南缘裂谷沉积相与震积岩序列[J].东北石油大学学报,2013,37(2):37-45.
[2] Cui Minli,Zhang Lianchang,Zhang Baolin,et al.Geochemistry of 1.78 Ga A-type granites along the southern margin of the North China Craton:Implications for Xiong′er magmatism during the break-up of the supercontinent Columbia[J].International Geology Review,2013,55(4):496-509.
[3] He Yanhong,Zhao Guochun,Sun Min.Geochemical and isotopic study of the Xiong’er volcanic rocks at the southern margin of the North China Craton:Petrogenesis and tectonic implications [J].Journal of Geology,2010,118(4):417-433.
[4] He Yanhong,Zhao Guochun,Sun Min,et al.Petrogenesis and tectonic setting of volcanic rocks in the Xiaoshan and Waifangshan areas along the southern margin of the North China Craton:Constraints from bulk-rock geochemistry and Sr-Nd isotopic composition [J].Lithos,2010,114(1/2):186-199.
[5] 胡受奚,林潜龙.华北与华南古板块拼合带地质和成矿[M].南京:南京大学出版社,1988:71-107.
[6] 贾承造.东秦岭板块构造[M].南京:南京大学出版社,1988.
[7] Kusky T M,Li Jianghai.Paleoproterozoic tectonic evolution of the North China Craton[J].Journal of Asian Earth Sciences,2003,22(4):383-397.
[8] Peng Peng.Reconstruction and interpretation of giant mafic dyke swarms:A case study of 1.78 Ga magmatism in the North China Craton[C]//Kusky T,Zhai M G,Xiao W J.The evolving continents:Understanding processes of continental growth.London:Geological Society,Special Publications,2010,338:163-178.
[9] 孙枢,张国伟,陈志明.华北断块南部前寒武纪地质演化[M].北京:冶金工业出版社,1985.
[10] Zhao Guochun,Sun Min,Wilde S A,et al.Assembly,accretion and breakup of the Paleo-Mesoproterozoic Columbia Supercontinent:Records in the North China Craton[J].Gondwana Research,2003,6(3):417-434.
[11] Zhao Guochun,He Yanhong,Sun Min.The Xiong'er volcanic belt at the southern margin of the North China Craton:Petrographic and geochemical evidence for its outboard position in the Paleo-Mesoproterozoic Columbia Supercontinent[J].Gondwana Research,2009,16(2):170-181.
[12] Zhao Taiping,Zhou Meifu.Geochemical constraints on the tectonic setting of Paleo-proterozoic A-type granites in the southern margin of the North China Craton[J].Journal of Asian Earth Sciences,2009,36(2):183-195.
[13] 翟明国,胡波,彭澎,等.华北中-新元古代的岩浆作用与多期裂谷事[J].地学前缘,2014,21(1):100-119
[14] Zhai Mingguo,Bian Aiguo,Zhao Taiping.The amalgamation of the supercontinent of North China Craton at the end of Neo-Archaean and its breakup during Late Palaeoproterozoic and Meso-Proterozoic[J].Science in China:Series D,2000,43(1):219-232.
[15] 陕西省地质矿产局.陕西省区域地质志[M].北京:地质出版社,1989.
[16] Chen Youzhi,Fu Xiaofei,Xiao Ancheng,et al.Type and evolution of carbonate platforms in Jixian Period Mesoproterozoic:Southwestern margin of Ordos Basin[J].Journal of Petroleum Exploration and Production Technology,2016,6(4):555-568.
[17] 邓坤,张哨楠,周立发,等.鄂尔多斯盆地西南缘蓟县系沉积环境与生烃潜力[J].天然气工业,2009,29(3):21-24.
[18] 李荣西,梁积伟,翁凯.鄂尔多斯盆地西南部蓟县系古油藏沥青[J].石油勘探与开发,2011,38(2):168-172.
[19] 李钦仲,杨应章,贾金昌.华北地台南缘 (陕西部分) 晚前寒武纪地层研究[C]//佚名.中国晚前寒武纪地区研究成果[M].西安:西安交通大学出版社,1985.
[20] Baioumy H M,Gilg A,Taubald H.Mineralogy and geochemistry of the sedimentary Kaolin deposits from Sinai,Egypt:Implications for control by the source rocks[J].Clays and Clay Minerals,2012,60(6):633-654.
[21] 白瑾.中国早前寒武纪地壳演化[M].北京:地质出版社,1993.
[22] 陈友智,付金华,杨高印,等.鄂尔多斯地块中元古代长城纪盆地属性研究[J].岩石学报,2016,32(3):856-864.
[23] 汤锡元,徐黎明,卢金城,等.陕甘宁盆地及其周缘地区结晶基底及深部地质研究[R].西安:长庆石油勘探局勘探开发研究院,1993.
[24] 张抗.论贺兰山裂堑[C]//佚名.鄂尔多斯盆地西缘地区石油地质论文集.呼和浩特:内蒙古人民出版社,1983:29-40.
[25] 武铁山.华北晚前寒武纪(中、新元古代)岩石地层单位及多重划分对比[J].中国地质,2002,29(2):147-154.
[26] 邸领军.鄂尔多斯盆地基底演化及沉积盖层相关问题的探究[D].西安:西北大学,2003.
[27] Dong Yunpeng,Zhao Yang,Liu Xiaoming,et al.Neoproterozoic amalgamation of the Northern Qinling terrain to the North China Craton:Constraints from geochronology and geochemistry of the Kuanping ophiolite[J].Precambrian Research,2014,255:77-95.
[28] 李天斌,张学文,王成,等.北祁连山东段海原一带海原群变质岩原岩恢复及其构造背景[J].地质通报,2006,25(1):194-203.
[29] 山西省地质矿产局.山西省区域地质志[M].北京:地质出版社,1989:95-115.
[30] 高剑峰,陆建军,赖鸣远,等.岩石样品中微量元素的高分辨率等离子质谱分析[J].南京大学学报:自然科学版,2003,39(6):844-850.
[31] Muarry R W,Brink M R,Jones D L,et al.Rare earth elements as indicators of different marinade positional environment in chert and shale [J].Geology,1990,18(3):268-271.
[32] Taylor S R,Mclenann S M.The continental crust:Its composition and evolution[M].London:Blackwell,1985.
[33] Allegre C J,Minster J F.Quantitative models of trace element behavior in magmatic processes[J].Earth and Planetary Science Letters,1978,38:1-25.
[34] 程裕淇.中国区域地质概论[M].北京:地质出版社,1994.
[35] Bhatia M R,Crook K A W.Trace element characteristics of graywackes and tectonic setting discrimination of sedimentary basins[J].Contributions to Mineralogy and Petrology,1986,92(2):181-193.
[36] 董云鹏,张国伟,朱炳泉.北秦岭构造属性与元古代构造演化[J].地球学报,2003,24(1):3-10.
[37] Banner J L,Hanson G N,Meyers W J.Rare earth element and Nd isotopic variations in regionally extensive dolomites from the Burlington:Keokuk Formation(Mississippian):Implications for REE mobility during carbonate diagenesis [J].Journal of Sedimentary Research,1988,58(3):415-432.
[38] Qing H,Mountjoy E.Rare earth element geochemistry of dolomites in the Middle Devonian Presquile barrie,Westem Canada Sedimentary Basin:Implications for fluid-rock ratios during dolomitization [J].Sedimentology,1994,41(4):787-804.
[39] Henderson P.Rare earth element geochemistry [M].Amsterdam:Elsevier,1984.
[40] Balashov Y A,Khitrov L M.Geochimi.Int.[J].Geochemistry International,1961,9:877.
[41] Goldberg E D,Koide M ,Schmit T R A,et al.Rare-earth dist ribut ions in the marine environment [J].Journal Geophysical Research,1963,68:4209-4217.
[42] Goodwin A M.Principles of Precambrian geology[M].[S.l.]:Academic Press,1996:269-272.
[43] Canfield D E.A new model for Proterozoic ocean chemistry [J].Nature,1998,396:450-453.
[44] 刘宝珺,曾允孚.岩相古地理基础和工作方法[M].北京:地质出版社,1985.
[45] 同济大学海洋地质系.海、陆相地层辨认标志[M].北京:科学出版社,1980.
[46] 卢勉,陈友智,吴高平,等.中元古代鄂尔多斯盆地南缘裂谷沉积相与震积岩序列[J].东北石油大学学报,2013,37(2):37-45.