S. Lorenzo, elevation of. —old salt formation of.
S. Mary, island of, elevation of.
S. Pedro, elevation of.
Salado, R., elevated shells of. —Pampean formation of.
Salines.
Salt, with upraised shell. —lakes of. —purity of, in salt lakes. —deliquescent, necessary for the preservation of meat. —ancient formation of, at Iquique. — —at S. Lorenzo. —strata of, origin of.
Salts, superficial deposits of.
Sand-dunes of the Uruguay. —of the Pampas. —near Bahia Blanca. —of the Colorado. —of S. Cruz. —of Arica.
Sarmiento, Mount.
Schmidtmeyer on auriferous detritus.