Andesite sentence example

andesite
  • The lavas and ashes ejected by these volcanoes consist of liparite, dacite, andesite and basalt.
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  • All the volcanic rocks of these islands are submarine stratified tuffs which are penetrated here and there by andesite or diabase dikes.
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  • The most common eruptive rock is andesite.
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  • The rolled crystals of sapphire occur, with garnet and other minerals, in glacial deposits, and have probably been derived from dykes of igneous rocks, like andesite and lamprophyre.
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  • The bulk of the mountain consists of andesite, but porphyry, obsidian, trachyte, basalt, and.
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  • Very extensive layers of melaphyre and andesite, as also of conglomerates and volcanic tuffs, cover the middle portions of the peninsula.
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  • The Carboniferous beds contain numerous sheets and flows of basalt and andesite.
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  • There occur also quartz-porphyry (Sierra Morena, Pyrenees, &c), diorite, porphyrite, diabase (well developed in the north of Andalusia, where it plays a great part in the structure of the Sierra Morena), ophite (Pyrenees, Cadiz), serpentine (forming an enormous mass in the Serrania de Ronda), trachyte, liparite, andesite, basalt.
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  • In Minahassa, at the northern extremity, there is a large area of tuffs and agglomerates consisting chiefly of augite andesite, and in this area there are many recent volcanic cones.
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