Gee et al 2017_FigS1_1col

Photomicrographs of the dominant lithologies found at the Mud Hill locality and their included sand fractions; rock texture is shown on the left and the nature of the sand fraction recovered from each rock is shown on the right: (1) texture and sand fraction of the typical red shale; (2) texture and sand fraction of the typical siltstone; (3) texture and sand fraction of the typical caliche nodule. Vertical margin of each photograph equal to 2.5 mm.