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滇东—川西下二叠统白云岩的形成机理——玄武岩淋滤白云化

金振奎,  冯增昭

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文章导航 > 沉积学报  > 1999 >  17(3): 383-389
金振奎, 冯增昭. 滇东—川西下二叠统白云岩的形成机理——玄武岩淋滤白云化[J]. 沉积学报, 1999, 17(3): 383-389.
引用本文: 金振奎, 冯增昭. 滇东—川西下二叠统白云岩的形成机理——玄武岩淋滤白云化[J]. 沉积学报, 1999, 17(3): 383-389.
shu
JIN Zhen kui, FENG Zeng zhao. Origin of Dolostones of the Lower Permian in East Yunnan—West Sichuan ——Dolomitization through Leaching of Basalts[J]. Acta Sedimentologica Sinica, 1999, 17(3): 383-389.
Citation: JIN Zhen kui, FENG Zeng zhao. Origin of Dolostones of the Lower Permian in East Yunnan—West Sichuan ——Dolomitization through Leaching of Basalts[J]. Acta Sedimentologica Sinica, 1999, 17(3): 383-389.
shu

滇东—川西下二叠统白云岩的形成机理——玄武岩淋滤白云化

  • 石油大学地球科学系 北京昌平 102200

详细信息
    作者简介:

    金振奎 男 1963年出生 博士后 副教授 沉积学及构造地质学

  • 中图分类号: P588.245

Origin of Dolostones of the Lower Permian in East Yunnan—West Sichuan ——Dolomitization through Leaching of Basalts

  • University of Petroleum Beijing 102200

    摘要
  • 摘要: 在滇东－ 川西地区的下二叠统中，白云岩发育，并可分两种类型：块状白云岩和斑状白云岩。块状白云岩呈浅灰色、灰色，主要由细晶或中晶白云岩石组成。白云岩的δ13C为+0.8‰～+3.5‰, 平均+2.7‰; δ18O为 -6.8‰～-9.1‰, 平均 -7.8‰。 Sr 为 25×10-6～52×10-6, 平均 39×10-6; Na 为 52×10-6～74×10-6, 平均 64×10-6。斑状白云岩呈灰色，由白云岩斑块和交代残余的石灰岩斑块组成，其中白云岩斑块含量大于50 %。白云岩斑块呈云朵状，大小多为几厘米至二十几厘米。白云岩斑块由细晶和中晶白云石组成。白云石呈自形或半自形，含量60% ～ 90%。白云石的δ13C为+0.8‰～+3.5‰, 平均+2.7‰; δ18O为 -6.8‰～-9.1‰, 平均 -7.8‰。 Sr 为 25×10-6～52×10-6, 平均 39×10-6; Na 为 52×10-6～74×10-6, 平均 64×10-6。各种资料表明，块状白云岩和斑状白云岩成因相同，只是白云化程度不同。白云岩是在埋藏环境中较高温度条件下形成的。白云化水来自淋滤峨嵋山玄武岩的大气
    Abstract: In the East Yunnan—West Sichuan area,dolostones are well developed and can be divided into two types:massive dolostones and patchy dolostones. Massive dolostones are light gray and gray,and mainly consist of fine or medium dolomites.The δ13C is +0.8‰～+3.5‰(PDB) and averages +2.7‰;δ18O is -6.8‰～-9.1‰(PDB) and averages -7.8‰.Sr is 25×10-6～52×10-6 and averages 39×10-6;Na is 52×10-6～74×10-6 and averages 64×10-6.Patchy dolostones are gray and consist of dolomite patches and calcite patches,with dolomite patches over 50%.The dolomite patches are several centimeters to over 20 cm in size and consist of fine to medium dolomite crystals.The dolomite crystals are euhedral or subhedral and are commonly 60%～90%.The δ13C is +3.1‰～+4.0‰ and averages +3.6‰;δ18O is -6.4‰～-8.1‰ and averages -7.8‰.Sr is 46×10-6～68×10-6 and averages 55×10-6;Na is 60×10-6～89×10-6 and averages 74×10-6. Various data show that massive dolostones and patchy dolostones are the same in origin and different only in dolomitization degree.These dolostones were formed under burial conditions,and the dolomitizing water was fresh meteoric water leaching basalts.The Mg2+ for dolomitization came from weathering and dissolution of basalts.Very thick basalts formed high mountains.which formed great relief of landform and large water head and made the meteoric water leaching basalts flow deep into underground.Such water resulted in large scale dolomitization of limestones.Thus,the dolomitization mechanism in this area may be called "dolomitization through leaching of basalts”.
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    • 参考文献(1)
  • [1] 1 冯增昭，杨玉卿，金振奎等.中国南方二叠纪岩相古地理 [M].山东.东营：石油大学出版社

    2 McCrea J M.On the isotopic chemistry of carbonate and a paleotemperature scale [J].J.Chem.Phys.,1950,18:849～857

    3 刘岫峰.沉积岩实验室研究方法 [M].北京：地质出版社.1991

    4 Steidtmann E.Evolution of limestone and dolomite [J].J.Geology,1911,19:323～345，393～428

    5 Van Tuy F M.The origin of dolomite [R].Iowa Geol.Survey Ann.Rept.,1916,25:251～422

    6 Alderman A R,Skinner H C W.Dolomite sedimentation in the South-East of South Australia [J].Am.J.Sci.,1957,255:561～567

    7 Curtis R,Evans G,Kinsman D J J,et al.Association of dolomite and anhydrite in the recent sediments of the Persian Gulf [J].Nature,1963,197:679～680

    8 Pray L C,Murray R C.Dolomitization and Limestone Diagenesis [C].SEMP Sper,Publ.,1965,13:180

    9 Shinn E A,Cinsburg R N,LIoyd R M.Recent supratidal dolomite from Andros Island,Bahamas [A].In:Pray L C，Murry R C，eds.Dolomitization and Limestone Diagenesis [C].SEMP Spec.Publ.,1965,13:112～123

    10 Hsu K J，Siegenthaler C.Preliminary experiments on hydrodynamic movement induced by evaporation and their bearing on the dolomite problem [J].Sedimentology.1969,1-2：11～25

    11 Feng Zengzhao，Jin Zhenkui.Types and origin of dolostones in the Lower Paleozoic of the North China Platform [J].Sedimentary Geology,1994,93:279～290

    12 Deffeyes K S,Lucia F J,Weyl P K.Dolomitization of recent and Plio-Pleistocene sediments by marine evaporite waters in Bonaire,Netherlands Antillies [A].In:Pray L C,Murry R C,eds.Dolomitization and Limestone Diagenesis [C].SEMP Spec.Publ.1965,13:71～88

    13 Badiozamani K.The Dorag dolomitization model -application to Middle Ordovician of Wisconsin [J].J.Sed.Petrology,1973,43:965～984

    14 Carballo J D,Land L S,Miser D E.Holocene dolomitization of supratidal sediments by active Tidal Pumping,Sugarloaf Keg,Florida [J].J.Sed.Petrolog,1987,57:153～165

    15 Burns S J,Baker P A.A geochemical study of dolomite in the Monterey Formation,California [J].J.Sed.Petrology,1987,57:128～139

    16 Mattes B W,Mountjoy E W.Burial dolomitization of the Upper Devonian Miette Buildup,Jasper National Park,Alberta.In:Zenger D H.Dunham J B，Ethington R L，eds.Concepts and Models of Dolomitization.SEPM Spec.Publ.1980,28:259～297

    17 Hardie L A.Dolomitization:a critical view of some current views [J].J.Sed.Petrology,1987,57:166～183

    18 张荫本.四川盆地二叠系中的白云化 [J].石油学报，1982，1：29～33

    19 陈明启.川西南下二叠阳新统白云岩成因探讨 [J].沉积学报，1989，45～50

    20 Lee Yong Il,Friedman G M.Deep-burial dolomitization on the Ordovician Ellenburger Group carbonate,West Texas and Southeastern New Mexico [J].J.Sed.Petrology,1987,57:544～557

    21 Zenger D H,Dunham J B.Concepts and models of dolomitization-an introduction [A].In:Zenger,Dunham J B,Ethington R L,eds.Concepts and Models of Dolomitization [C].SEPM Sepc.Publ.,1983,28:1～9

    22 Feng Zengzhao,Zhang Yongsheng,Jin Zhenkui.Types,origin and reservoir characteristics of dolostones of Majiagou Group of the Ordovician,Ordos,North China Platform [J].Sed.Geology,In Press

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    24 Choquette P W,Steinen R P.Mississippian non-supratidal dolomite,Ste.Genevieve Limestone,Illinois Basin:evidence for mixed-water dolomitization [A].In:Zenger D H,Dunham J B,Ethington R L,eds.Concepts and Models of Dolomitization [C].SEPM Spec.Publ.,No.28,1980,163～196

    25 Land L S.The isotopic and trace element geochemistry of dolomites the state of the art.In:Zenger D H，Dunham J B，Ethington R L，eds.Concepts and Models of Dolomitization [C].SEPM Spec.Publ.,No.28,1980.11～30

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  • 收稿日期:  1998-11-23
  • 刊出日期:  1999-09-10

目录

    滇东—川西下二叠统白云岩的形成机理——玄武岩淋滤白云化

    • 石油大学地球科学系 北京昌平 102200
      • 作者简介:

      金振奎 男 1963年出生 博士后 副教授 沉积学及构造地质学

    • 收稿日期: 1998-11-23
    • 刊出日期: 1999-09-10

    • 中图分类号: P588.245

    摘要: 在滇东－ 川西地区的下二叠统中，白云岩发育，并可分两种类型：块状白云岩和斑状白云岩。块状白云岩呈浅灰色、灰色，主要由细晶或中晶白云岩石组成。白云岩的δ13C为+0.8‰～+3.5‰, 平均+2.7‰; δ18O为 -6.8‰～-9.1‰, 平均 -7.8‰。 Sr 为 25×10-6～52×10-6, 平均 39×10-6; Na 为 52×10-6～74×10-6, 平均 64×10-6。斑状白云岩呈灰色，由白云岩斑块和交代残余的石灰岩斑块组成，其中白云岩斑块含量大于50 %。白云岩斑块呈云朵状，大小多为几厘米至二十几厘米。白云岩斑块由细晶和中晶白云石组成。白云石呈自形或半自形，含量60% ～ 90%。白云石的δ13C为+0.8‰～+3.5‰, 平均+2.7‰; δ18O为 -6.8‰～-9.1‰, 平均 -7.8‰。 Sr 为 25×10-6～52×10-6, 平均 39×10-6; Na 为 52×10-6～74×10-6, 平均 64×10-6。各种资料表明，块状白云岩和斑状白云岩成因相同，只是白云化程度不同。白云岩是在埋藏环境中较高温度条件下形成的。白云化水来自淋滤峨嵋山玄武岩的大气

    English Abstract

    金振奎, 冯增昭. 滇东—川西下二叠统白云岩的形成机理——玄武岩淋滤白云化[J]. 沉积学报, 1999, 17(3): 383-389.
    引用本文: 金振奎, 冯增昭. 滇东—川西下二叠统白云岩的形成机理——玄武岩淋滤白云化[J]. 沉积学报, 1999, 17(3): 383-389.
    shu
    JIN Zhen kui, FENG Zeng zhao. Origin of Dolostones of the Lower Permian in East Yunnan—West Sichuan ——Dolomitization through Leaching of Basalts[J]. Acta Sedimentologica Sinica, 1999, 17(3): 383-389.
    Citation: JIN Zhen kui, FENG Zeng zhao. Origin of Dolostones of the Lower Permian in East Yunnan—West Sichuan ——Dolomitization through Leaching of Basalts[J]. Acta Sedimentologica Sinica, 1999, 17(3): 383-389.
    shu

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