Gneiss
Definition of Gneiss
Pronunciation: nīs | n. | 1. | (Geol.) A crystalline rock, consisting, like granite, of quartz, feldspar, and mica, but having these materials, especially the mica, arranged in planes, so that it breaks rather easily into coarse slabs or flags. Hornblende sometimes takes the place of the mica, and it is then called hornblendic gneiss or syenitic gneiss. Similar varieties of related rocks are also called gneiss. |
Related Words
aa, abyssal rock, basalt, bedrock, block lava, brash, breccia, conglomerate, crag, druid stone, festooned pahoehoe, granite, igneous rock, lava, limestone, living rock, magma, mantlerock, metamorphic rock, monolith, pahoehoe, pillow lava, porphyry, pudding stone, regolith, rock, ropy lava, rubble, rubblestone, sandstone, sarsen, schist, scoria, scree, sedimentary rock, shelly pahoehoe, stone, talus, tufa, tuff
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Gnat catcher
Gnat flower
Gnat hawk
gnat owl
Gnat snapper
Gnat strainer
Gnathic
Gnathic index
Gnathidium
Gnathite
Gnathonic
Gnathopod
Gnathopodite
Gnathostegite
Gnathostoma
Gnathotheca
Gnatling
Gnatworm
Gnaw
Gnawer
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Gneissic
Gneissoid
Gneissoid granite
Gneissose
Gnew
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Gnomic Poets
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Gnomology
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Gnomonic projection
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