ultramafic
Americanadjective
Etymology
Origin of ultramafic
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.
On the figure above, the top row has both plutonic and volcanic igneous rocks arranged in a continuous spectrum from felsic on the left to intermediate, mafic, and ultramafic toward the right.
From Textbooks • Jan. 1, 2017
If this continues, the magma becomes increasingly silica-rich, turning ultramafic mantle into mafic magma, and mafic mantle into intermediate magma.
From Textbooks • Jan. 1, 2017
As has already been described, igneous rocks are classified into four categories, based on either their chemistry or their mineral composition: felsic, intermediate, mafic, and ultramafic.
From Textbooks • Jan. 1, 2015
As a result, kimberlite eruptive material is representative of mantle compositions: it is ultramafic.
From Textbooks • Jan. 1, 2015
The mantle includes several layers, all with the same overall ultramafic composition.
From Textbooks • Jan. 1, 2015
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
