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Adigrat Sandstone information


Adigrat Sandstone
Stratigraphic range: Late Triassic–Early Jurassic
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Dabba Selama monastery in Dogu’a Tembien, established on a mesa in Adigrat Sandstone – one of the most inaccessible monasteries in the world[1]
TypeGeological formation
UnderliesAntalo Limestone
OverliesEnticho Sandstone, Edaga Arbi Glacials, Fincha Sandstone
Thickness600 m (2,000 ft)
Lithology
PrimarySandstone
OtherSiltstone, Claystone, Dolomite
Location
Coordinates14°10′51″N 39°28′31″E / 14.1808°N 39.4752°E / 14.1808; 39.4752
RegionTigray
CountryAdigrat Sandstone Ethiopia Adigrat Sandstone Eritrea
ExtentEritrea, Tigray
Type section
Named forTown of Adigrat
Named byWilliam Thomas Blanford
Adigrat Sandstone is located in Ethiopia
Adigrat Sandstone
Adigrat Sandstone (Ethiopia)

The Adigrat Sandstone formation in north Ethiopia, in a wide array of reddish colours, comprises sandstones with coarse to fine grains, and locally conglomerates, silt- and claystones. Given the many lateritic palaeosols and locally fossil wood fragments, the formation is interpreted as a deposit in estuarine, lacustrine-deltaic or continental environments. The upper limit of Adigrat Sandstone is of Middle-Late Jurassic age (around 160 million years or Ma ago) whereas the lower boundary is Triassic (200 Ma).[2][3] There are numerous rock-hewn churches in this formation.

  1. ^ Nyssen, Jan (2019). Description of Trekking Routes in Dogu'a Tembien. GeoGuide. pp. 557–675. doi:10.1007/978-3-030-04955-3_38. ISBN 978-3-030-04954-6.
  2. ^ Sembroni, A.; Molin, P.; Dramis, F. (2019). Regional geology of the Dogu'a Tembien massif. In: Geo-trekking in Ethiopia's Tropical Mountains - The Dogu'a Tembien District. SpringerNature. ISBN 978-3-030-04954-6.
  3. ^ Beyth, M. (1972). To the Geology of Central-Western Tigre. Bonn: Dissertation Rheinische Friedrichs-Wilhelms-Universität Bonn. p. 159.

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