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Article Navigation >  Acta Sedimentologica Sinica  > 2003  >  21(2): 260-265

DI Ling-jun, YANG Cheng-yun, YANG Yi-hua, JI Xiao-lin, BAO Hong-ping. Solution Spot Genetic Mechanism of Majiagou Formation in Ordovician of Ordos Basin[J]. Acta Sedimentologica Sinica, 2003, 21(2): 260-265.
Citation: DI Ling-jun, YANG Cheng-yun, YANG Yi-hua, JI Xiao-lin, BAO Hong-ping. Solution Spot Genetic Mechanism of Majiagou Formation in Ordovician of Ordos Basin[J]. Acta Sedimentologica Sinica, 2003, 21(2): 260-265.
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Solution Spot Genetic Mechanism of Majiagou Formation in Ordovician of Ordos Basin

  • 1.

    Department of Geology, Northwest University,Xi'an 710069;

  • 2.

    Department of Geology, Peking University,Beijing 100871;

  • 3.

    Research Institute of Oil and Gas Exploration and Development, Changqing Oil Field Xi'an 710021

  • Received Date: 2002-04-08
  • Rev Recd Date: 2002-07-01
  • Publish Date: 2003-06-10
  • The weathering crust of Majiagou Formation in Ordovician of Changqing Gasfield in Ordos Basin is the major pay zone with the evaporated marginal sea facies. Solution spots and holes with millimeter and centimeter size are developed and its occurrence, composition and fillings in the holes are very complex. Some of them have multi-stage fillings such as gypsum, quartz, calcite, dolomite, kaolinite and pyrite,and so on. The lower part of the solution hole remains dolomite crystalline just like geopetal structure of vadose sands in the clastic rock. As shown, the solution spots are formed not only with suitable lithofacies, paleogeographic environment and complexed evolutional genetic history, but also the karstification related to original deposit and different geologic historical stages.
  • [1] 任美锷.岩溶学概论[M].北京:地质出版社,1993[Ren Meie.An Introduction to Karst[M].Beijing:Geological Publishing House,1993]
    [2] 袁道先主编,中国岩溶学[M].北京:地质出版社,1993[Yuan Daoxian eds.The Karst in China[M].Beijing:Geological Publishing House,1993]
    [3] James NP andChoquette PW著,胡文海等译,古岩溶[M].北京:石油工业出版社,1992[JamesN P,Choquette P W.Translated by Hu Wenhai etal.Paleo-karst[M].Beijing:PetroleumIndustryPress,1992]
    [4] 吕炳全.蒸发边缘海相储层的研究[M].上海:同济大学出版社,1995.1～ 2[ Lu Binquan. The Study of Evaporated Marginal Sea Facies Reservoir[M]. Shanghai: The Publishing House of Tongji University,1995.1 ～2]
    [5] 王大纯.水文地质学基础[M].北京:地质出版社,1986[Wang Dachum. The Basis of Hydrogeology[M]. Beijing:Geological Publishing House, 1986]
    [6] 黄月明.陕甘宁盆地中部气田白云岩储层特征[J].天然气工业,1993 ;13(5) :31 ～ 34[Huang Yueming. Dolomite reservoir characteristics of Central Gas Field in Shanganning Basin [J]. Natural Gas Industry,1993,13(5) :31～34]
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Publishing history
  • Received:  2002-04-08
  • Revised:  2002-07-01
  • Published:  2003-06-10

Solution Spot Genetic Mechanism of Majiagou Formation in Ordovician of Ordos Basin

  • 1. Department of Geology, Northwest University,Xi'an 710069;
  • 2. Department of Geology, Peking University,Beijing 100871;
  • 3. Research Institute of Oil and Gas Exploration and Development, Changqing Oil Field Xi'an 710021
  • Received Date: 2002-04-08
  • Rev Recd Date: 2002-07-01
  • Publish Date: 2003-06-10

Abstract: The weathering crust of Majiagou Formation in Ordovician of Changqing Gasfield in Ordos Basin is the major pay zone with the evaporated marginal sea facies. Solution spots and holes with millimeter and centimeter size are developed and its occurrence, composition and fillings in the holes are very complex. Some of them have multi-stage fillings such as gypsum, quartz, calcite, dolomite, kaolinite and pyrite,and so on. The lower part of the solution hole remains dolomite crystalline just like geopetal structure of vadose sands in the clastic rock. As shown, the solution spots are formed not only with suitable lithofacies, paleogeographic environment and complexed evolutional genetic history, but also the karstification related to original deposit and different geologic historical stages.

DI Ling-jun, YANG Cheng-yun, YANG Yi-hua, JI Xiao-lin, BAO Hong-ping. Solution Spot Genetic Mechanism of Majiagou Formation in Ordovician of Ordos Basin[J]. Acta Sedimentologica Sinica, 2003, 21(2): 260-265.
Citation: DI Ling-jun, YANG Cheng-yun, YANG Yi-hua, JI Xiao-lin, BAO Hong-ping. Solution Spot Genetic Mechanism of Majiagou Formation in Ordovician of Ordos Basin[J]. Acta Sedimentologica Sinica, 2003, 21(2): 260-265.
shu

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