Lithos 

TL;DR: Two geochemical proxies are particularly important for the identification and classification of oceanic basalts: the Th-Nb proxy for crustal input and hence for demonstrating an oceanic, non-subduction setting; and the Ti-Yb proxy, for melting depth and hence indicating mantle temperature and thickness of the conductive lithosphere as mentioned in this paper.

TL;DR: In this article, in-situ LAM-MC-ICPMS microanalysis shows large variations in 176Hf/177Hf (up to 15 eHf units) between zircons of different growth stages within a single rock, and between zones within single zircon grains, suggesting that each of the observed magmas in both complexes developed through hybridisation of ≥2 magmas with different sources.

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.

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.

TL;DR: The A-type granitoid suites vary in composition from quartz syenites to peralkaline granites and their respective volcanic equivalents as mentioned in this paper, and the A-types are characterized by their relatively high alkali contents and low CaO contents.