第40章 ON THE PLAINS AND VALLEYS OF CHILE:--SALIFEROUS SU

Basin-like plains of Chile; their drainage, their marine origin.

Marks of sea-action on the eastern flanks of the Cordillera.

Sloping terrace-like fringes of stratified shingle within the valleys of the Cordillera; their marine origin.

Boulders in the valley of Cachapual.

Horizontal elevation of the Cordillera.

Formation of valleys.

Boulders moved by earthquake-waves.

Saline superficial deposits.

Bed of nitrate of soda at Iquique.

Saline incrustations.

Salt-lakes of La Plata and Patagonia; purity of the salt; its origin.

The space between the Cordillera and the coast of Chile is on a rude average from eighty to above one hundred miles in width; it is formed, either of an almost continuous mass of mountains, or more commonly of several nearly parallel ranges, separated by plains; in the more southern parts of this province the mountains are quite subordinate to the plains;in the northern part the mountains predominate.