Archean-Mesoproterozoic Crustal Evolution and Crust-Mantle Geodynamics of Western Liaoning-Northeastern Hebei Provinces, North China Craton
| Autor: | Wang, Wei |
|---|---|
| EAN: | 9789811079214 |
| Auflage: | 001 |
| Sachgruppe: | Geowissenschaften |
| Sprache: | Englisch |
| Seitenzahl: | 328 |
| Produktart: | Gebunden |
| Veröffentlichungsdatum: | 30.01.2018 |
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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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