Figure 2
From: Magma diversity reflects recharge regime and thermal structure of the crust
Numerical model to simulate the temporal evolution of temperatures in a crust undergoing pulsed magma injections. (a) Sketch illustrating the 2.5D axisymmetric modelling geometry. The left boundary of the model is an axis of rotational symmetry. The symmetry axis is indicated as red line on the left boundary of the model. Magma is instantaneously injected and under accreted as cylindrical sills, causing downward displacement of crustal rocks. The temporal evolution of the temperature field is calculated by solving the axisymmetric formulation of the heat conduction equation (“Methods” section). (b) Typical model output showing temperature (°C) variation in a 30 × 30 km crustal section after 200 ka of pulsed basaltic magma injection. Magma has accumulated with a centre at 24 km depth and core T > 1,100 °C. Like shown in (a) the left boundary of the model is modelled as a rotational symmetry axis.
