rv 



20 c 



68 c 



66 c 



6A g 



62 c 



X 



"Y 



16° 



T 



12° 



~7\ 



^ 



\^ 



\ 



\ 



\ 



s 



\ 

 i 



lOOOm contour 





l_. 



■v^jir <* 





^i 



/• 



\ 



\ 



\ 



A. 



66° 



64 l 



62' 



60° 



58 c 



34° 30° 26° 



Fig. 4. Area of magnetic survey southwest of Iceland. Positive anomalies 

 are shown in solid black. Belts of Quaternary volcanics in Iceland are 

 shaded. Dots mark earthquake epicentres. (From Heirtzler, Le Pichon and 

 Baron, 1966). 



34 



