Basalt

(noun.) the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene.

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• It was evident that subsequen tly to the formation of the basalt that portion of the coast containing the white stratum had been elevated. 李贝. 西洋科学史.
• He was quite positive that all basalt was of aqueous origin and of quite recent formation. 李贝. 西洋科学史.
• It rested on volcanic rocks and was itself covered with basalt, that is, lava which had crystallized under the sea. 李贝. 西洋科学史.
• Hutton believed that basalt, and the whinstones generally, are of igneous origin. 李贝. 西洋科学史.
• Similar results were obtained with regular basalts and different specimens of igneous rock. 李贝. 西洋科学史.
• Before Werner had begun his teaching career at Freiberg, Desmarest, the French geologist, had made a special study of the basalts of Auvergne. 李贝. 西洋科学史.
• Why do basalts, whin stones, and other supposedly volcanic rocks differ so much in structure from lava? 李贝. 西洋科学史.

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