] , “Genesis of massive sulfide deposits on a sediment-covered spreading center, Escanaba Trough 41N, Gorda Ridge”, Economic Geology, vol. 88, pp. 2069–2098, 1993.
, “Pb isotope ratios in sulfides from mid-ocean ridge hydrothermal sites”, Geology, vol. 16, pp. 362–365, 1988.
, “An estimate of hydrothermal fluid residence times and vent chimney growth rates based on 210-Pb/Pb ratios and mineralogic studies of sulfides dredged from the Juan de Fuca Ridge”, Earth and Planetary Science Letters, vol. 76, pp. 35–44, 1985.