34 Origin and Morphology of Ocean Basins
a
b
Fig. 1.15 a, b Magnetic lineations on the sea floor. a Anomaly patterns of A. D. Raff and
R. G. Mason (J 961, Geol Soc
Am Bull 72: 1267). These anomalies remained unexplained for
several years. They are now
recognized as being generated at
the " spreading centers" (arrows).
b Mechanism of generating magnetic anomalies, as proposed by
F. 1. Vine and D. H. Matthews
(1963, Nature London 199:
947). [F. J. Vine in R. A. Phinney, 1968. The history of the
Earth 's crust, Princeton Univ.
Pre ss pp 73- 89]