The transmission from rifting to seafloor spreading: magnetic slope off Morocco

Abstract

In many cases, passive continental margins are paralleled by a prominent magnetic anomaly, the so-called 'slope anomaly'. Off the Atlantic coast of Morocco, the slope anomaly (named SI) varies considerably along the strike in amplitude and shape (Fig. 1). The variations are correlated to changes in the magnctic character or the subsided and fractured continental crust eastward of the slope anomaly where lineated magnetic anomalies, nearly parallel to S1, were observed. Seaward of S1 the anomalies are generally much weaker. They are also parallel to the slope anomaly, however less continuous.