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Volume 18 Issue 2
Apr.  2007
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刘建国, 李安春, 徐兆凯, 徐方建. Manganese Abnormity in Holocene Sediments of the Bohai Sea. Journal of Earth Science, 2007, 18(2).
Citation: 刘建国, 李安春, 徐兆凯, 徐方建. Manganese Abnormity in Holocene Sediments of the Bohai Sea. Journal of Earth Science, 2007, 18(2).
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Manganese Abnormity in Holocene Sediments of the Bohai Sea

  • 1.

    Key Laboratory of Marine Geology and Environmen

  • Received Date: 2018-07-15
  • Rev Recd Date: 2018-07-15
  • Publish Date: 2018-07-15
  • ManganeseabnormityhasbeenobservedintheHolocenesedimentsofthemudareaofBohaiSea.Onthebasisofgrainsize,chemicalcomposition,heavymineralcontentandacceleratormassspectrometry(AMS)14Cdatingofforaminifer,relationshipsbetweenmanganeseabnormityandsedimentationrates,materialsource,hydrodynamicconditionsareprobed.ManganeseabnormityoccurredduringtheMiddleHolocenewhensealevelandsedimentationrateswerehigherthanthoseatpresent.Sedimentaryhiatuswasnotobservedwhenmaterialsourcesandhydrodynamicconditionswerequitesimilar.Comparedwiththeformerperiod,thelatterperiodshowedadecreaseinreductionenvironmentandaninclinationtowardoxidationenvironmentwithhighmanganesecontent,whereasprovenanceandhydrodynamicconditionsshowedonlyaslightchange.Fromtheaboveobservations,itcanbeconcludedthatcorrelationamongmanganeseabnormity,materialsource,andhydrodynamicconditionsisnotobvious.Redoxenvironmentseemstobethekeyfactorformanganeseenrichment,whichismainlyrelatedtomarineauthigenicprocess.
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通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

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Manganese Abnormity in Holocene Sediments of the Bohai Sea

  • 1. Key Laboratory of Marine Geology and Environmen
  • Received Date: 2018-07-15
  • Rev Recd Date: 2018-07-15
  • Publish Date: 2018-07-15

Abstract: ManganeseabnormityhasbeenobservedintheHolocenesedimentsofthemudareaofBohaiSea.Onthebasisofgrainsize,chemicalcomposition,heavymineralcontentandacceleratormassspectrometry(AMS)14Cdatingofforaminifer,relationshipsbetweenmanganeseabnormityandsedimentationrates,materialsource,hydrodynamicconditionsareprobed.ManganeseabnormityoccurredduringtheMiddleHolocenewhensealevelandsedimentationrateswerehigherthanthoseatpresent.Sedimentaryhiatuswasnotobservedwhenmaterialsourcesandhydrodynamicconditionswerequitesimilar.Comparedwiththeformerperiod,thelatterperiodshowedadecreaseinreductionenvironmentandaninclinationtowardoxidationenvironmentwithhighmanganesecontent,whereasprovenanceandhydrodynamicconditionsshowedonlyaslightchange.Fromtheaboveobservations,itcanbeconcludedthatcorrelationamongmanganeseabnormity,materialsource,andhydrodynamicconditionsisnotobvious.Redoxenvironmentseemstobethekeyfactorformanganeseenrichment,whichismainlyrelatedtomarineauthigenicprocess.

刘建国, 李安春, 徐兆凯, 徐方建. Manganese Abnormity in Holocene Sediments of the Bohai Sea. Journal of Earth Science, 2007, 18(2).
Citation: 刘建国, 李安春, 徐兆凯, 徐方建. Manganese Abnormity in Holocene Sediments of the Bohai Sea. Journal of Earth Science, 2007, 18(2).
shu

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