trachytic

One is overwhelmed by the contemplation of these innumerable sculptures, worked with delicacy and artistic feeling in a hard, intractable, trachytic rock, and all found in one tropical island.

The Malay Archipelago 2004

AN unfathomable gulf twenty-five miles long, and twenty miles broad was produced, but long before historic times, by the falling in of caverns among the trachytic lavas of the center of the island.

In Search of the Castaways 2003

Its double cone forms the limit of a trachytic belt which stands out distinctly in the mountain system of the island.

Journey to the Interior of the Earth 2003

It may easily be conceived what vast quantities of elastic gases, what masses of molten matter accumulated beneath its solid surface whilst no exit was practicable after the cooling of the trachytic crust.

Journey to the Interior of the Earth 2003

This central mass consists principally of a greyish trachytic porphyry, in some places rich in veins of silver-ore.

Anahuac : or, Mexico and the Mexicans, Ancient and Modern Edward Burnett Tylor

Mexico -- the concretionary silex of the trachytic lavas.

Anahuac : or, Mexico and the Mexicans, Ancient and Modern Edward Burnett Tylor

Leucogæi, and is the result of the metamorphosis of the trachytic tufa by the chemical action of the gases that rise up through the fumaroles, a very fine variety of porcelain -- known to collectors as

Roman Mosaics Or, Studies in Rome and Its Neighbourhood Hugh Macmillan

From Le Beage the trachytic mountain of +Mezenc+ (pronounce Mezing) is visited.

The South of France—East Half C. B. Black

Crossing some cultivated fields, a bold eminence of trachytic tufa, covered with scanty grass and tufts of brushwood, rises between you and the sea, forming part of a range of low hills, which evidently mark the ancient coast-line.

Roman Mosaics Or, Studies in Rome and Its Neighbourhood Hugh Macmillan

About here, some of the trachytic porphyry which forms the substance of the hills had happened to have cooled, under suitable conditions, from the molten state into a sort of slag or volcanic glass, which is the obsidian in question; and, in places, this vitreous lava -- from one layer having flowed over another which was already cool -- was regularly stratified.

Anahuac : or, Mexico and the Mexicans, Ancient and Modern Edward Burnett Tylor