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Archean-Mesoproterozoic Crustal Evolution and Crust-Mantle Geodynamics of Western Liaoning-Northeastern Hebei Provinces, North China Craton

Bag om Archean-Mesoproterozoic Crustal Evolution and Crust-Mantle Geodynamics of Western Liaoning-Northeastern Hebei Provinces, North China Craton

This thesis presents geological, petrological, geochemical, and zircon U¿Pb¿LüHf isotopic field data for representative Precambrian lithologies in the Western Liaoning-Northeastern Hebei Provinces along the northern margin of the North China Craton (NCC). It describes late Neoarchean (2.64¿2.48 Ga) supracrustal metavolcanic rocks and granitoid gneisses; late Paleoproterozoic (1.72¿1.68 Ga) Jianping alkaline plutons and Pinggu alkaline volcanic rocks; and newly discovered ~1.23 Ga mafic dykes. The nature of magma sources and genesis of each magmatic episode are investigated, and the Precambrian (~2.6¿1.2 Ga) lithospheric mantle evolution and crust-mantle interaction processes are established for the first time ¿aspects that provide important constraints in our understanding of the Precambrian crustal evolution and geodynamic processes in the region studied.

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  • Sprog:
  • Engelsk
  • ISBN:
  • 9789811079214
  • Indbinding:
  • Hardback
  • Sideantal:
  • 305
  • Udgivet:
  • 30. januar 2018
  • Udgave:
  • 12018
  • Vægt:
  • 792 g.
  • 8-11 hverdage.
  • 6. december 2024

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Beskrivelse af Archean-Mesoproterozoic Crustal Evolution and Crust-Mantle Geodynamics of Western Liaoning-Northeastern Hebei Provinces, North China Craton

This thesis presents geological, petrological, geochemical, and zircon U¿Pb¿LüHf isotopic field data for representative Precambrian lithologies in the Western Liaoning-Northeastern Hebei Provinces along the northern margin of the North China Craton (NCC). It describes late Neoarchean (2.64¿2.48 Ga) supracrustal metavolcanic rocks and granitoid gneisses; late Paleoproterozoic (1.72¿1.68 Ga) Jianping alkaline plutons and Pinggu alkaline volcanic rocks; and newly discovered ~1.23 Ga mafic dykes. The nature of magma sources and genesis of each magmatic episode are investigated, and the Precambrian (~2.6¿1.2 Ga) lithospheric mantle evolution and crust-mantle interaction processes are established for the first time ¿aspects that provide important constraints in our understanding of the Precambrian crustal evolution and geodynamic processes in the region studied.

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