(a and b) BSE images of typical plagioclase resorption textures using the example of MSH. (a) Surficial resorption produced multiple dissolution surfaces with rounded edges in the interior of the crystal. Most oscillatory zones are associated with minor resorption around the edges; arrows designate examples of more significant surficial resorption events. (b) Pervasive resorption of the crystal core produced a sieved texture in the outer core. The morphology of the remaining intact core (dashed outline) does not reflect its original shape and is dominated by deep embayments (arrows). Scale bars are 250 μm in length. (c and d) Illustrations of 3D crystal shape terminology used in this study: (c) tabular shape. (d) equant shape.