Файл:Ugab river.jpeg

This contrast-enhanced false color image has the Landsat band combination 7-5-4, which means that the red (3), green (2), and blue (1) bands that comprise true color images are replaced by two mid-infrared (7 and 5) and one near-infrared (4) bands. This band combination is appropriate for mapping the surficial geology. The Ugab River here crosses the outcrop of a geological unit which is called “Zerrissene Turbidite System”. It is made up of folded, low grade metamorphosed Neoproterozoic sedimentary rocks which can be subdivided into 5 formations.^{[#cite_note-swart1990-1 [1]]} Most of these formations are quite good identifiable in the false color image: The Zebrapüts Formation (greyish to yellowish), the Brandberg West Formation (a thin violet band, too thin to be clearly visible in the western part of the area, but apparently with larger outcrop area in the east due to very narrow folding), the Brak River Formation (yellowish to dark brown), the Gemsbok River Formation (the broader violet bands), and the Amis River Formation (orange to reddish-brown). The yellowish, brownish and reddish colors are indicative of siliciclastic rocks (claystones and sandstones, incl. “greywacke”) while violet is indicative of carbonates.