andesite
noun
a dark-colored volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals, as hornblende or biotite.
andesitic
-
a word derived from
andesite.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Liebske, C., Behrens, H., Holtz, F. & Lange, R. A. The influence of pressure and composition on the viscosity of andesitic melts.
From Nature ● Dec. 12, 2017
Most of them are massive granitic batholiths, but they're shot through with andesitic dykes.
From Scientific American ● Jun. 4, 2017
Great masses of granite, syenite and diorite were intruded at this period, and send tongues even into the andesitic tuffs.
From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 5 "Arculf" to "Armour, Philip" by Various
Silurian conglomerates and sandstones, with andesitic lavas, overlie the Dalradians, with marked unconformity, south of Leenane and round Lough Nafooey.
From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 4 "G" to "Gaskell, Elizabeth" by Various
They are often accompanied by volcanic rocks, which are mainly andesitic, and they commonly lie unconformably upon the older beds.
From Encyclopaedia Britannica, 11th Edition, Volume 2, Slice 7 "Arundel, Thomas" to "Athens" by Various
