Figure 1

Figure 1.

Examples of difficult field problems that can be solved with StraboTools. Answers are in Appendix 1. (A) Deformed granite. The foliation is obvious and easy to measure, but quantifying its strength is difficult to do in the field. (B) Subtly deformed image of a granodiorite outcrop. Do you see a fabric? What deformation was applied? (C) Shadowed outcrop photograph of a cliff in alluvial fan deposits. Is there a pebble imbrication indicating the direction of stream flow? (D) What is the proportion of dark minerals in this granodiorite?