学科分类
/ 1
1 个结果
  • 简介:TheeasternHimalayansyntaxisinNamjagbarwaisahigh-grademetamorphicterrainformedbytheIndia-EurasiacollisionandnorthwardindentationoftheIndiancontinentintoAsia.Right-andleft-lateralslipzoneswereformedbytheindentationontheeasternandwesternboundariesofthesyntaxisrespectively.TheDongjug-Mainlingfaultzoneisthemainshearzoneonthewesternboundary.Thisfaultzoneisaleft-lateralslipbeltwithalargecomponentofthrusting.Thekinematicsofthefaultisconsistentwiththeshorteningwithinthesyntaxis,andtheslippinghistoryalongitrepresentstheindentingprocessofthesyntaxis.TheAr-ArchronologicalstudyshowsthattheageoftheearlydeformationintheDongjug-Mainlingfaultzonerangesfrom62to59Ma.ThisevidencesthattheIndia-EurasiacollisionoccurredintheearlyPaleoceneintheeasternHimalayansyntaxis.

  • 标签: India-Eurasia collision EASTERN HIMALAYAN syntaxis Namjagbarwa