Basalt
['bæsɔːlt;-(ə)lt] or [bə'sɔlt]
Definition
(noun.) the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene.
Checker: Rita--From WordNet
Definition
(n.) A rock of igneous origin, consisting of augite and triclinic feldspar, with grains of magnetic or titanic iron, and also bottle-green particles of olivine frequently disseminated.
(n.) An imitation, in pottery, of natural basalt; a kind of black porcelain.
Typist: Owen
Definition
n. a hard dark-coloured rock of igneous origin.—adj. Basalt′ic.
Typed by Agatha
Examples
- It was evident that subsequen tly to the formation of the basalt that portion of the coast containing the white stratum had been elevated. Walter Libby. An Introduction to the History of Science.
- He was quite positive that all basalt was of aqueous origin and of quite recent formation. Walter Libby. An Introduction to the History of Science.
- It rested on volcanic rocks and was itself covered with basalt, that is, lava which had crystallized under the sea. Walter Libby. An Introduction to the History of Science.
- Hutton believed that basalt, and the whinstones generally, are of igneous origin. Walter Libby. An Introduction to the History of Science.
- Similar results were obtained with regular basalts and different specimens of igneous rock. Walter Libby. An Introduction to the History of Science.
- Before Werner had begun his teaching career at Freiberg, Desmarest, the French geologist, had made a special study of the basalts of Auvergne. Walter Libby. An Introduction to the History of Science.
- Why do basalts, whin stones, and other supposedly volcanic rocks differ so much in structure from lava? Walter Libby. An Introduction to the History of Science.
Typed by Jody