The ironstone lenses of Ga'ara area are enclosed within the uppermost part of the clastic
succession of Permocarboniferous Ga'ara Formation. This succession is composed mainly
of sandstones (sometimes with pebbles), siltstones, and kaolinitic claystones. The
ironstones are classified according to their lithology and texture into two types: massive and
pisolitic–oolitic ironstones. The later is restricted to the southern rim of Ga'ara Depression.
The enclosure of ironstone lenses within the fining upward cycle, predominance of colloform …