Geochemistry

Ages, Geochemistry and Metamorphism of Neoarchean Basement by Meiling Wu

By Meiling Wu

Focusing on problems with while and the way Archean crust within the craton was once shaped, this PhD thesis e-book offers significant examine results of box dependent metamorphic, geochemical and geochronological investigations on Meso-Neoarchean basement rocks from Shandong Province within the jap Block of the North China Craton. in line with significant findings and new facts, the writer proposes that the formation and evolution of Archean crust used to be ruled by way of mantle plumes, no longer by way of plate tectonics. As one of many oldest cratonic blocks on the planet containing rocks as outdated as 3.85 billion years, the formation and evolution of North China Craton continues to be debatable. for this reason this ebook should be of price to an individual attracted to the evolution of cratonic blocks and Precambrian geology.

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Additional info for Ages, Geochemistry and Metamorphism of Neoarchean Basement in Shandong Province: Implications for the Evolution of the North China Craton

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5 Ga) rocks are characterized by anticlockwise P–T paths involving isobaric cooling (IBC) (Fig. 3a; Cui et al. 1991; Chen et al. 1994; Ge et al. 1994, 2003; Li 1993; Sun et al. 1992, 1993; Zhao et al. 1998), which are similar to those P–T paths of the Neoarchean basement rocks in the Western Block (Fig. 3b), reflecting an origin related to the intrusion and underplating of mantlederived magmas (Zhao et al. 1998). 1 Introduction 25 Fig. 4 Map of the Paleoproterozoic Jiao-Liao-Ji Belt in the Eastern Block of the North China Craton (after Zhao et al.

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