"Silicic" Quotes from Famous Books
 ... against the cooling effects of the atmospheric air, it melts together in thick, brown crusts. The solfatara of Danan is situated exactly south of that below, at the end of the ravine of the Kasiboi. The clay earth, from which the silicic acid has been washed out by the rains, is carried into the valley, where it forms a plain, the greater part of which is occupied by a small lake, Malaksan (sour), slightly impregnated with sulphuric acid. Its surface, which, by reason of the very flat banks, is protected against the weather, ...
— The Former Philippines thru Foreign Eyes • Fedor Jagor; Tomas de Comyn; Chas. Wilkes; Rudolf Virchow.
... LAVAS. Two classes of volcanic rocks may be distinguished,—those containing a large proportion of silica (silicic acid, SiO2) and therefore called ACIDIC, and those containing less silica and a larger proportion of the bases (lime, magnesia, soda, etc.) and therefore called BASIC. The acidic lavas, of which RHYOLITE and ...
— The Elements of Geology • William Harmon Norton |
