This book is an essential guide to how field geology should be practiced. It is simple, clear, and written in a style which is accessible to students and amateurs. Jargon is limited to the irreducible and there is no effort to obfuscate. I have been using this all my professional life of more than 30+ years.
Using this manual and a fairly rudimentary set of basic geologic skills, outcrop and contact geologic maps can be produced, complete with cross-sections. There is no better resource for those interested in learning more about field geology.
[For those interested in a narrative take on American geology, look no further than John McPhee's epic and accessible Annals of the Former World. A worthy read!--OH ]
Appendix 8. Lithologic Patterns for Stratigraphic Columns and Cross Sections
Appendix 3. Percentage Diagrams For Estimating Composition By Volume (p. 366)