Petrogenesis and tectonic implications of the Neoproterozoic adakitic and A-type granitoids in the southern Arabian-Nubian shield

Both adakitic and A-type granitoid have been recently identified in the southern ANS. The Emba-Derho and Koka granitoids yielded the same zircon U–Pb ages of 851 ± 14 Ma and 851 ± 2 Ma, respectively. The Emba-Derho granitoids show high and a narrow range of SiO 2 (71.3–73.6 wt.%) and Al 2 O 3 (14.9–...

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