... of the earliest tephra at Konso, the Turoha Tuff, with the KBS Tuff, and one of the younger tephra, the Bright White Tuff, with the Chari Tuff, based upon geochronologial and geochemical data. Feldspars from the Konso tephra were separated directly from the tuffs, probably indicating much closer proximity...

... 0.06 0.19 2.10 1.88 92.09 Turoha Tuff 944-57, 58, 59; (av. of 155 analyses) 964-21, 27 70.95 0.18 10.31 2.90 0.10 0.03 0.18 3.62 4.18 92.20 KBS Tuff 77-17 70.37 0.16 10.80 3.09 0.12 0.03 0.16 3.23 3.27 91.24 *Total iron expressed as Fe 2 O 3...

... ) and age data ( Drake et al. 1980 ) ( Fig. 1 ) and occurs as a c. 0.4 m thick unit containing pumice clasts up to 40 cm in diameter ( Brown et al. 2006 ). Although it has been suggested that the KBS (= H2) Tuff is correlated with the Turoha Tuff (TRT) in the Konso region ( Katoh et al. 2000...