3) Further above in this sequence other quartz-Kyanite micaschists follow. The may show a preserved cross-bedding, In thin section (ZM 7) a persistent reequilibration of Kyanite into white mica and Mg-chlorite, (white mica rims around Mg-chlorite) is observed. Quartz, white mica ± phlogopite, Mg-chlorite and Kyanite are the dominant mineralogical components. The overall sequence (dipping 20°h22°) is transected at low angle by a penetrative foliation whith the morphology of a particularly well developed crenulation cleavage in the uppermost levels (above QtB) and dipping 25'1-.355°. The QtC hematite-layered micaschists (ZM 9 and ZM 10) are rich in kyanite, (rimmed by white mica), Mg-chlorite and phlogopite and provide a record of the original bedding, though distorted and cleaved in the hematite -rich layers. 2.2. Kimale Hill Another preserved portion of the Lower Roan sequence overlying the basement has been visited at Kimale Hill. The metamorphosed stratigraphic sequence here rests on top of metagranites, which preserve as magmatic relics K-feldspar (microcline), plagioclase and white mica. Metamorphic minerals as a a newly recrystallized white mica rimming the formers and green-brown form without a significant foliation (ZM 11). Similarfly scapolite blebs (Dipyre) and an un oriented aggregate of white mica replace the original plagioclase. The metasedimentary sequence begins with a one meter thick-white mica Mg-chlorite, phlogopite-Kyanite schist with augen-like aggregates of annealed quartz (up to 4-5 mm). This schist (ZM 12) is strongly foliated subparallel to the contact with the granite; no evident layering is visible across the boundary, but the oriented inclusion trails (qtz-white mica) preserved within the large laths of randomly oriented Mg-chlorites and the nodular shape of the quartz favour a long microstructural history of this rock involving succesive stages of intense refoliation and recrystallisation. Therefore this rock can well be interpreted as a blastomylonite. These micaschists are overlain by other white mica, phlogopite, Mgchlorite, Kyanite; quartz-schists (ZM 14 - ZM 15) with Uranium showings. They contain as accessory minerals rutile, turmaline, hematite and apatite. The overlying level is a cross-bedded quartz-kyanite-micaschist (QtB) with phlogopite and again a Mg-chlorite sitting across the prominent mineral layering and with a pronounced optical intracrystalline deformation. The assemblage of the metasedimentary cover at Kimale and Chifubwa Gorge show the persistent EFTA01168758