Geology and Minerals

Intra-volcanic sedimentary rock in North 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.

Also on this shelf

See also

• ▸Elk Point Group
• ▸Jeanne Selmersheim-Desgrange
• ▸Biogenic substance

Uncatalogued shelf

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