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The composition of the continental crust
TL;DR: In this paper, a new calculation of the crustal composition is based on the proportions of upper crust (UC) to felsic lower crust (FLC) to mafic lower-crust (MLC) of about 1.6:0.4.
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A geochemical classification for granitic rocks
B. Ronald Frost,Calvin G. Barnes,William J. Collins,Richard J. Arculus,David J. Ellis,Carol D. Frost +5 more
TL;DR: Barbarin et al. as mentioned in this paper used the modified alkali-lime index (MALI) and the aluminum saturation (ASI) for the classification of caledonian post-orogenic granites.
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An overview of adakite, tonalite–trondhjemite–granodiorite (TTG), and sanukitoid: relationships and some implications for crustal evolution
TL;DR: In this article, an analysis of an extensive adakite geochemical database identifies two distinct compositional groups: high-SiO2 adakites (HSA) which represent subducted basaltic slab-melts that have reacted with peridotite during ascent through mantle wedge and low-Si O 2 adakitic mantle wedge.
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Adakitic magmas: modern analogues of Archaean granitoids
TL;DR: Sajona et al. as mentioned in this paper showed that the liquids produced by melting of tholeiite in subduction-like P-T conditions are adakitic in composition, indicating that modern adakites have trondhjemitic affinities (high Na2O contents and K2O/Na2O∼0.5) and their Mg no.
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The early Precambrian odyssey of the North China Craton: A synoptic overview
TL;DR: The crustal growth and stabilization of the North China Craton (NCC) relate to three major geological events in the Precambrian: (1) a major phase of continental growth at ca. 2.9-2.7 Ga, (2) the amalgamation of micro-blocks and cratonization at 2.5-3.5 Ga, and (3) Paleoproterozoic rifting-subduction-accretion-collision tectonics and subsequent high-grade granulite facies metamorphism-granitoid mag