An array of north-striking, left-stepping, active normal faults is situated along the southwestern margin of the Gulf of California. This normal fault system is the marginal fault system of the oblique-divergent plate boundary within the Gulf of California. To better understand the role of upper-crustal processes during development of an obliquely…

Discusses the use of a strip log as a diagrammatic representation of the information available in a sequence of sedimentary rocks. Describes the design of the strip log (both symbolically and by visual/spatial patterns) and some of the possible interpretations that can be made using them. (TW)

Describes the use of analysis of rotational faults in undergraduate structural geology laboratories to provide students with applications of both orthographic and stereographic techniques. A demonstration problem is described, and an orthographic/stereographic solution and a reproducible black model demonstration pattern are provided. (TW)