| Intra-volcanic sedimentary rock | |
|---|---|
| Stratigraphic range: | |
 Ksad Addi Amyuq near Hagere Selam | |
| Type | Geological formation |
| Underlies | Alaji Basalts |
| Overlies | Ashangi Basalts |
| Thickness | 60 m (200 ft) |
| Lithology | |
| Primary | Silicified Mudstone |
| Other | Diatomite |
| Location | |
| Coordinates | 13°39′19″N 39°10′23″E / 13.6552°N 39.1731°E |
| Approximate paleocoordinates | 0°N 0°E / 0°N 0°E |
| Region | Tigray |
| Country |  Ethiopia |
| Extent | Northern Ethiopian Highlands |
| Type section | |
| Named by | It:Giovanni Merla |
  Intra-volcanic sedimentary rock in North Ethiopia (Ethiopia) | |
Between 29 and 27 million years ago, the extrusion of Ethiopia’s flood basalts was interrupted and deposition of continental sediments occurred. Inter-trappean beds outcrop in many places of the Ethiopian highlands. They consist of fluvio-lacustrine deposits, that are generally a few tens of metres thick. Often, these interbedded fluvio-lacustrine deposits are very visible because their bright colours strongly contrast with the basalt environment.[1]
- ^ 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.