Archean Mesoproterozoic Crustal Evolution And Crust Mantle Geodynamics Of Western Liaoning Northeastern Hebei Provinces North China Craton

Download or read book Archean-Mesoproterozoic Crustal Evolution and Crust-mantle Geodynamics of Western Liaoning-Northeastern Hebei Provinces, North China Craton written by Wei Wang and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents geological, petrological, geochemical, and zircon U?Pb?Lu?Hf 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.