Genesis and Timing of Ignimbrites (Alaji Ignimbrites) Associated Wirh Trap Basalts from the Northern Ethiopian Plateau
A. Dereje, Y. Gezahegn, L. Reisberg, R. Pik, B. Marty and P. Barbey
CRPG-CNRS, B.P. 20, 54501 Vandoeuvre Les Nancy, France and Geol. & Geophys. Dept., AAU, P.O. Box 1176, Addis Ababa, Ethiopia
Geol. & Geophys. Dept., AAU, P.O. Box 1176, Addis Ababa, Ethiopia
CRPG-CNRS, B.P. 20, 54501 Vandoeuvre Les Nancy, France