Amorphization of Serpentine at High Pressure and High Temperature
Pressure-induced amorphization of serpentine was observed at temperatures of 200&deg; to 300&deg;C and pressures of 14 to 27 gigapascals with a combination of a multianvil apparatus and synchrotron radiation. High-pressure phases then crystallized rapidly when the temperature was increased to 400&deg;C. These results suggest that amorphization of serpentine is an unlikely mechanism for generating deep-focus earthquakes, as the temperatures of subducting slabs are significantly higher than those of the rapid crystallization regime.
Irifune
T
T. Irifune and K. Kuroda, Department of Earth Sciences, Ehime University, Matsuyama 790, Japan. N. Funamori, T. Uchida, T. Yagi, Institute for Solid State Physics, University of Tokyo, Roppongi, Minato-ku 106, Japan. T. Inoue, Center for High Pressure Research, State University of New York, Stony Brook, NY 11794, USA. N. Miyajima, Department of Earth and Planetary Sciences, Hokkaido University, Sapporo 060, Japan.
Kuroda
K
Funamori
N
Uchida
T
Yagi
T
Inoue
T
Miyajima
N