ultramafic


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Related to ultramafic: Intermediate Rock

ul·tra·maf·ic

 (ŭl′trə-măf′ĭk)
adj.
Ultrabasic.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

ultramafic

(ˌʌltrəˈmæfɪk)
adj
(Geological Science) geology (of igneous rock) composed of a very high percentage of magnesium and iron
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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References in periodicals archive ?
Alt's recent ten hole RC program reported here has confirmed the historical results intercepting broad zones of low-level gold in a series of ultramafic and mafic schists with sulphidic shales and cherts.
Extensive EM surveys are ongoing and a high-powered fixed loop EM (FLEM) survey has just been completed over the northern section of Cathedrals Belt, where ultramafic units are interpreted to extend down-dip to the north and northwest.
The Fork EXT target is hosted along the upper contact of the Russet Lake Ultramafic unit in an analogous geologic setting to the high grade 8 Zone of the Madsen deposit.
He said the project entailed assessment of Mafic, Ultramafic and Granitic Complexes.
Currently endemic in select regions of Mindanao, the plant is an erect shrub that grows directly from its stems on ultramafic, or igneous rich, soil.
The property geology contains the contact between Confederation and Balmer Assemblage rock units as well as folded mafic and ultramafic volcanics with mafic and felsic intrusives also present.
These units are mainly comprised of plutonic and/or volcanic rocks ranging from felsic through mafic to ultramafic composition and are over lain by volcanic and volcanosedimentary sequence (Tahirkheli et al., 1982; Bard, 1983; Searle, 1999).
The terrestrial, erect, cauliflorous shrub found in ultramafic soils stands up to 1.5 meters tall.
Petrochemistry of asbestos bearing rocks from Skhakot-Qila Ultramafic Complex, northern Pakistan.
They make it possible to apply magnetic and spectrometric geophysical methods as mafic and ultramafic igneous and metamorphic rocks normally contain the greatest quantity of magnetic minerals (high magnetic susceptibilities) and the least abundance of radiometric minerals.