The following paper is offered as a contribution to the studies of low-angle faulting which have been led by the researches and teaching of Professor R. T. Chamberlin. A comparison of this paper with previous publications, especially "Low-Angle Faulting," by R. T. Chamberlin and W. Z. Miller,' will show that the writer has followed Chamberlin in large measure. Most of the material here presented has really been anticipated in the article referred to, but a different manner of approach on some phases of the study is attempted, and the possibility is suggested that there may be a closer relationship between lowand high-angle thrust faults than is commonly