Figure 2: Phase diagram and AE triggering.
From: Dehydration-driven stress transfer triggers intermediate-depth earthquakes
Stability field of antigorite in the MSH system, approximate experimental P–T path (grey arrows) and acoustic-emission recording (circles). CHZ/HSZ: geotherms on top of the slab in Cold/Hot Subduction Zone. Fo, forsterite; Atg, antigorite; En, enstatite; ‘tl’, ‘talc-like’ phases. P.2005 (ref. 23): ‘talc-like’ in (reaction (4)); W&S.1997 (ref. 47): enstatite in. Thick black lines correspond to initiation and termination of reactions observed experimentally, ‘Atg –’ to the fast destabilization of antigorite corresponding to the beginning of reaction (5).
