Permeability Changes Resulting from Quartz Precipitation and Dissolution around Upper Crustal Intrusions

Figure 6

Silica transport dynamics in a system with intermediate host rock permeability (10⁻¹⁵ m²), a deep intrusion emplacement depth, and an initial host rock porosity of 0.05. A snapshot state of the system is shown during the (a) incipient, (b) main, and (c) waning stages. The initial boundary of the intrusion is shown in (a–c) with a black dashed line. Quartz solubility, vertical fluid mass fluxes, and rates of quartz precipitation and silica dissolution close to the intrusion are shown in (d), (e), and (f), respectively. The color scheme is the same as in Figures 4 and 5 (above).