ABSTRACT
One of the informally named sedimentary units in the lower part of the Muglad basin of south-west central Sudan is the Abu Gabra Formation. The upper part of the Kordofan Group of the Muglad Basin of western Sudan contains the Adok Formation of sands and silts. Klerkx established a group of rocks around the southern and south-eastern sides of J. Uweinat intrusive complex in Libya and the Sudan. The lowermost unit of the Kordofan Group in western Sudan is the Amal Formation. Unfoliated microcline-biotite granites in the Gedaref and Sennar region of central Sudan have been named the Ban Balos Group by Whiteman and attributed to an unpublished 1956 manuscript by B. Ruxton. The Basal Group is the lowermost unit of the three-fold Metavolcanic-Metasedimentary Complex of the north-eastern Sudan as defined by Jar’en Nabi and Hailu. Heterogeneous mixtures of granites, granodiorites, diorites, quartz diorites, adamellites and trondhjemites form large, extensive batholithic bodies intrusive into the volcano-sedimentary sequences of the northeastern Sudan.
