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Zircon U-Pb Age, Geochemistry and geological implication of the 255 Ma Alkali-rich dykes from Ulungur Area, North Xinjiang
TL;DR: Li et al. as discussed by the authors showed that trachy porphyry dykes, featuring low concentration of Al2O3, CaO, MgO and high alkali contents, are metaluminous alkaline rock and belong to A-type granitoids.