Juan de Fuca Magnetic Anomalies

Vine's Magnetic Anomalies.

Summary diagram of total-field magnetic anomalies southwest of Vancouver Island. Areas of positive anomalies (normal magnetization) are colored. These areas duplicate the reversal time scale, hence implying ages for the underlying crust as indicated. Central red anomalies coincide with ridge crests; Juan de Fuca to the north and Gorda to the south. Straight lines delineate faults (NB: the ones oblique to the transform fault connecting the Juan de Fuca and Gorda ridges are now known to be pseudofaults) offsetting the anomaly pattern. [Figure from Vine (1968), with caption modified.]


Return to Hey’s “Juan de Fuca” page.