silicic


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Related to silicic: silicic acid

silicic

[sə′lis·ik]
(petrology)
Describing magma or igneous rock rich in silica (usually at least 65); granite is a silicic rock. Also known as oversaturated; persilicic.
References in periodicals archive ?
Petrography, petrology, and K-Ar geochronology of hypabyssal mafic and silicic Mesozoic igneous rocks in southeastern New Hampshire.
In the study area, the outcropping lithologies were grouped into nineteen classes: 1--lower Ordovician sedimentary rocks, 2--Devonian conglomerates, sandstones and pelites, 3,4,5 and 6--carboniferous marine formations, 7, 10 and 11--granites, 8--granodiorites, 9--rhyolites, 12--mesosilicic and silicic volcanic and igneous complex, 13--multicolor tuff, 14--Miocene intrusive rocks, 15--Miocene argillites, 16 and 17--Pleistocene deposits, 18--silt, and 19--recent deposits.
The role of silicic acid in the renal excretion of aluminum.
This plant grows in warm and dry climate and on sandy and silicic soil.
Silicic anhydride, talc, calcium carbonate, perlite or other similar materials can also be used as fillers.
All holes drilled to-date have encountered significant intervals of favourable silicic or advanced argillic alteration, and should extend the El Victor pit north and west of the present Mulatos pit outline.
Recent observations, made with the powerful Lunar Reconnaissance Orbiter (LRO) optical cameras, have revealed geological features diagnostic not just of volcanism but also of much rarer silicic volcanism.
Among specific topics are extinct radionuclides and the earliest differentiation of the Earth and Moon, diffusion constraints on rates of melt production in the mantle, time constraints from chemical equilibrium in magmatic crystals, timescales associated with large silicic magma bodies, and timescales of magma degassing.
Thanks to this subterranean distillation of silicic granite from more basic ancestral rock, we live on a split-level planet.
These include silicic materials like quartz, with high silicon and oxygen content.