| Thickness, lithic content and clast angularity decrease from Alto Los Volcanes and El Mirador relieves towards N, E and S directions. |
| Especially noteworthy in thin section is the scarcity of potassium feldspar in any of the igneous clast types in this section. |
| A large, angular semi-pelite clast contains two tectonic fabrics, one of which is parallel to bedding within the clast whereas the other is oblique to it. |
| This clast can be lithologically attributed to the Upper Metamorphic Unit, but the Eocene age obtained on this rock has not been found in samples in situ. |
| In one class of breccia, clast material, breccia formation, and cement are all closely related in time. |
| At 12 of the sites that have imbricated cobbles, clast orientations were measured to derive the palaeocurrent direction. |
