Experimental investigation of the solubility of albite and jadeite in H2O, with paragonite+quartz at 500 and 600°C, and 1–2.25GPa

The solubility of rocks in metamorphic fluids: A model for rock-dominated conditions to upper mantle pressure and temperature

“…the ratio ([K]+[Na])/[Al]) are provided. These are compared to experimental studies (Wohlers et al, 2011 andSpandler et al, 2007) or modeling work (Manning, 1998 (Wohlers et al, 2011). The values are computed here with bulk composition SiO 2 (sat), Al 2 O 3 /Na 2 O = 1.3 (molar basis) to produce the Alb-Par-Q or Jd-Par-Q phase assemblages consistent with the experimental system (Wohlers et al, 2011).…”

“…For example, Pak et al (2003) determined the solubility of the pelitic assemblage albite + K feldspar + andalusite + quartz in aqueous chloride solutions at 600 and 650 • C, 0.2 GPa, and found it unnecessary to invoke additional species to K-Al and K-Si complexes to explain their results. Wohlers et al (2011) …”

The behaviour of incompatible elements during hydrous melting of metasomatized peridotite at 4–6 GPa and 1000 °C–1200 °C

“…We interpret the difference between the fluid-peridotite distribution coefficients of Spandler et al (2014) and our results to be too large to be solely due to the difference in T of 100°C. It is hypothesized that the higher D fluid-peridotite obtained here for the fertile composition reflects the higher potential to form polymerized aqueous aluminosilicate species in the fluid phase [compare e.g., Wohlers et al (2011)], thus enhancing fluid mobilities of trace elements that are incompatible in the residual anhydrous mineral assemblage.…”

Subduction Factory 5: Unusually low Poisson's ratios in subduction zones from elastic anisotropy of peridotite

“…The flux of H 2 O expelled globally from subducting slabs at depths of ∼15–100 km is ∼1E13 kg/Myr/km of trench [ Hacker , 2008]. Such fluids have ∼1 moles Si per kg of H 2 O [ Manning , 2004; Wohlers et al , 2011], meaning that they could carry ∼1E13 moles/km/Myr of Si into the mantle wedge. To metasomatize a 10 km × 10 km‐square cross‐section of the mantle wedge to the point where quartz first appears would require that all of this Si‐rich fluids over ∼150 Myr is deposited in that 10‐km square.…”