Berkeley Geochronology Center, 2455 Ridge Rd., Berkeley, CA 94709 United States ; Dept. Earth and Planetary Science, Univ. California, Berkeley, CA 94720 United States
Dept. Earth and Planetary Science, Univ. California, Berkeley, CA 94720 United States
Berkeley Geochronology Center, 2455 Ridge Rd., Berkeley, CA 94709 United States
Berkeley Geochronology Center, 2455 Ridge Rd., Berkeley, CA 94709 United States ; Dept. Earth and Planetary Science, Univ. California, Berkeley, CA 94720 United States
Dept. Geology, Univ. Pretoria, Pretoria, 0002 South Africa