Interpretation of the magnetic anomalies off central California

Magnetic total intensity observations off the coast of California to 133°W delineate additional offsets of the magnetic anomaly lineations not previously reported. The lack of topographic expression of the minor magnetic anomaly offsets suggests that either the sedimentary cover masks small displacements or the source of the magnetic anomalies lies in the deeper part of the oceanic crust. A distinct change in amplitude, wavelength, and trend of the magnetic lineations occurs at approximately 124°20'W. This change coincides with a hiatus in the pattern of the magnetic lineations and supports the contention that the process of sea-floor genesis was episodic rather than a continuous event.