STRIKE SLIP/TRANSFORM/WRENCH I. STRIKE SLIP FAULTS A. Conserve crustal area, no thickening or thinning B. Associated with vertical fault planes (some are listric), give straight map expression against topography C. Secondary associated features - where strike slip bends 1. Pull apart basin e.g., Salton Sea, southern CA 2. Thrust faults =transverse ranges e.g., San Gabriel Mtns, CA II. TRANSFORM FAULTS A. Connect spreading centers along a mid ocean ridge San Andreas - transform fault III. WRENCH FAULTS/ZONES - large scale strike-slip faults (Wilcox, Harding, and Seely, 1973, Basic Wrench Tectonics, AAPG Bull. , v. 57, #1 p.74-96) A. Recognized predictability to trap hydrocarbons 1. Low Ð shears with shear sense of overall zone 2. High Ð shears with opposite sense e.g., New Zealand, Alaska, Trinidad, Israel B. Extrusion Tectonics (indentation) - wrench zones e.g., collision between India and China (Tapponnier et al., 1982, Geology, v. 10, p. 611-616.)