"Unstriated" Quotes from Famous Books
 ... porphyroid trachyte. The roads leading to Quito cut through hills of pumice-dust. On the plain of Inaquito and in the valley of Esmeraldas are vast erratic blocks of trachyte, some containing twenty-five cubic yards, having sharp angles, and in some cases a polished, unstriated surface. M. Wisse does not consider them to have been thrown out of Pichincha, as La Condamine and others have judged. It is true, as he says, that they could not have come out of the present cone at a ...
— The Andes and the Amazon - Across the Continent of South America • James Orton |
