RUSSIAN JOURNAL OF EARTH SCIENCES, VOL. 19, ES5006, doi:10.2205/2019ES000677, 2019

Figure 1. Equilibrium diagram of the decarbonatisation reactions in the upper mantle. Decarbonatisation of sideritic dolomites is plotted in accordance with experimental data by Martin and Hammouda [2011], dolomite plus silica reaction parameters are from [Luth, 1995], siderite stability from [Kang et al., 2015] and extrapolated MnCO$_3$ stability from [Boulard et al., 2016]. Cross-hatched rectangle outlines $PT$ conditions of the eclogitic diamonds [Smith et al., 2015]. Important geotherms for cratons, continent and mantle adiabate are shown. Filled circle corresponds to the starting point of silica-dolomite mixture in the mantle wedge under Tolbachik volcano accepted in this paper, open circle corresponds to parameters of the CO$_2$ oversaturated mantle xenolith from Panonian plain [Creon et al., 2016] (numbers are heat flux on the surface [Davies, 2013]).

 
Citation: Simakin A. G. (2019), Poroelastic response to rapid decarbonatisation as a mechanism of the diamonds formation in the mantle wedge of Kamchatka, Russ. J. Earth Sci., 19, ES5006, doi:10.2205/2019ES000677.
 

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