PHYSICAL FEATURES OF CHILI. 



409 



The Mejillones Range. 



Beyond the normal coast-line has been developed the steep rampart of the 

 Mejillones Chain, whose bold southern headland rises 4,150 feet above the Jorge 



Fig. 153. — Mejillones Chain 

 Scale 1 : 900,000. 



^^STW^ 



70'50' 



West or breenwich 



70*30* 



to 100 

 Fathoms. 



Depths. 



100 to 1,000 



Fathoms. 



1 .000 Fathoms 

 and upwards. 



18 Miles. 



■or Chiraba Bay. The plain connecting this inlet with that of Mejillones at the 

 north end of the range is evidently a marine bed upheaved at a comparatively 

 recent epoch. The lowest strata resting on the hard rock contain thick silicious 

 layers, a species of tripolite, composed almost entirely of the remains of marine 



