“REFRACTION WAVES REFLECTED FROM A FAULT ZONE”

Abstract

Many records of a reflection project in Webb County, Texas, displayed events showing excessive step‐out times. These events are treated as refraction waves following a near‐surface marker horizon, and their origin is shown to be associated with faulting which was mapped by the ordinary reflections on the records. Possible confusion that may arise from failing to recognize these anomalous events is discussed as well as the possibility of using the phenomenon to map faults.