All abstracts by Ian Johnson in conference series: Goldschmidt

(2011) Development of the Modern-Style Geochemical Cycle of Uranium by 3.5 Ga: A Solution to the “Lead Paradox”
Ohmoto H, Watanabe Y, Yamaguchi K, Bevacqua D, Johnson I & Rushton T

(2010) Geochemical Cycles of Fe, Mo, U, Cu, Cr, REEs, and S during the Period 3.5 – 3.2 Ga ago
Ohmoto H, Bevacqua D, Johnson I & Watanabe Y

(2009) Earth’s Oldest (~3.4 Ga) Lateritic Paleosol in the Pilbara Craton, Western Australia
Johnson I, Watanabe Y, Stewart B & Ohmoto H

(2007) Formation of Probable Lateritic Soils ~3.43 Ga in the Pilbara Craton, Western Australia
Ohmoto H, Watanabe Y, Allwood A, Burch I, Knauth P, Yamaguchi K, Johnson I & Altinok E