This paper describes the San Andreas Rift or strike-slip shear of California. After a statement of the general relations of the rift, four sections are distinguished and one of them, the stretch of the rift in central California, is discussed in some detail with reference to (1) the fault type; (2) the stress problem; (3) the associated minor structures, such as thrusts and folds; (4) the antiquity of the rift; (5) deductions from schlieren and jointing in granites; and (6) the direction of the orogenic pressure to which the assemblage of structures may be attributed. The facts throughout are analyzed according to the principles governing mechanical rock deformation.
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Bailey Willis (1938) studied this question.