At this place the cliffs which overhang the southern bank presented a fine collection of basaltic columns.
No doubt the basaltic mountains once formed the side of the fjord.
The Marquesas Islands are small and, in contrast to the coral and basaltic formation of Tahiti, of volcanic origin.
The walls of the outer Alban crater are of peperino, while those of the inner are basaltic.
Phonolithic or basaltic pebbles made me suppose that we were near to a change of country.
On its outer edge it is fringed by a border of basaltic rocks.
Immediately west of the watershed are two small plateaus covered with basaltic dbris, near el-Jish and Kades.
It is cut up by gullies of basaltic rock, escarpments of which appear everywhere in the hills.
Of such soils, the first to be considered are those of basaltic origin.
The animal remains found beneath the basaltic cap are very numerous, and all of extinct species.
c.1600, from Late Latin basaltes, misspelling of Latin basanites "very hard stone," from Greek basanites "a species of slate used to test gold," from basanos "touchstone." Not connected with salt. Said by Pliny ["Historia," 36.58] to be an African word, perhaps Egyptian bauhan "slate." Any hard, very dark rock would do as a touchstone; the assayer compared the streak left by the alleged gold with that of real gold or baser metals. Hence Greek basanizein "to be put to the test, examined closely, cross-examined, to be put to torture."
A dark, fine-grained, igneous rock consisting mostly of plagioclase feldspar and pyroxene, and sometimes olivine. Basalt makes up most of the ocean floor and is the most common type of lava. It sometimes cools into characteristic hexagonal columns, as in the Giant's Causeway in Anterim, Northern Island. It is the fine-grained equivalent of gabbro.