Mineral Resources Potential - Geothermal Resources

up the marine Mmic sequence within the central Plateau. The
type section of the Antalo Group, in the Abay Gorge in the Blue
Nile Bash, totals 880 m (Getaneh, 1991). halo Limestone is
typically developed in the Mekele area, where a 750 m thick
sequence consists of fossiLifmus yellow iimestone and marl,
In chmobgical order, the formations within this group are:
- The Abay Beds (central Ethiopia, Middle Jurassic), which
we mposed of limestones, calcareous sandstones, and
shale and gypsum beds with a total thick of 580 m;
- The Antalo Limestone (localized in different regions, Upper
Jurassic, ("Oolithic Jurassic") consists of fossiliferous
limestone, interbedded marl, calcareous shale and rare
amaceow beds (thickness: up to 1400 m);
- The Agula Shale (Tigray), Upper Jmic (Kimmeridgian) is
connposed of shale, black shale, marl, claystone and minor
limestone and dolomite (thickness: 60-250 m);
- The Upper Sandstone (@retaceous) consists of sandstone,
shale, marl, oolithic and dolomitic limestone and mim
gypsum- andlor aatry drite-bearing beds deposited
conformably on the Jurassic rocks in some mas, as in
Western Ethiopia, and unconfonnably in others, ws in
Tigmy region,
The thickest and most complete succession of Mesozoic
rocks are know in eastem and westem Ogaden and harghe
region including upper Jurassic to Turonian Gabredam (Oolithic
limestone, sandstone, marl, shale, and minor gypsum-bearing beds;
thickness: 400-630 m), KO& (dolomitic limestone, marl, shale
4 minor anhydrite-bearing beds; thickness: 100-500m), M&l
(limestone, shale d marl), Ferfer (dolomite and clayish
limestones; thickness: 100-200 m), Belet Uetl (limestone and
glauconite shale; thickness: 90-230 m) and Amba Aradom
(sandstone, shale, siltstone; thickness: 1 50-600 m) Formations
2000).
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