RT Journal Article SR Electronic T1 Foreword JF American Journal of Science JO Am J Sci FD American Journal of Science SP iii OP viii DO 10.2475/01.2018.01 VO 318 IS 1 A1 Jill A. VanTongeren A1 E. Bruce Watson A1 Mark S. Ghiorso YR 2018 UL http://www.ajsonline.org/content/318/1/iii.abstract AB