Figure 4 Geological map of afar area Mengesha T. et.al., 1996) On the northern bank of ledi river a river valley.it has an average grey bentonitic clay which is –green thickness of 7.5m . compact and massive containing minor salt and silt is exposed.in this In this area the reserve was estimated to area the betonite outcrop is without be 1784000m3 (table1) with an an overburden and has 8.5 thickness. overburden of 1200000m3. 5-6km west of the gewane-mille highway grayish to brownish bentonite clay is exposed in the
Figure 4 Geological map of afar area Mengesha T. et.al., 1996) On the northern bank of ledi river a grey –green bentonitic clay which is compact and massive containing minor salt and silt is exposed.in this area the betonite outcrop is without an overburden and has 8.5 thickness. 5-6km west of the gewane-mille highway grayish to brownish bentonite clay is exposed in the river valley.it has an average thickness of 7.5m . In this area the reserve was estimated to be 1784000m3 (table1) with an overburden of 1200000m3.
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