The study area, situated between the Khan, Swakop and lower Omaruru Rivers, comprises rocks of the Abbabis Metamorphic Complex overlain by the Damara Sequence, as well as a variety of Cambrian and Mesozoic intrusives. Field studies assisted by LANDSAT image interpretation have led to a revision of the stratigraphy of the Central Zone of the Damara Orogen, which has been subject to controversy. A schist - calc silicate rock - marble sequence present between the Chuos and Karibib Formations is introduced into the stratigraphic nomenclature as the Arandis Formation, and correlated with the Oberwasser, Okawayo and Spes Bona Formations of the Karibib area. However, distinct lithostratigraphic successions are recognised in the northern and southern parts of the Central Zone, separated by the Omaruru Lineament