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gneiss::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Type of | metamorphic rock |
Examples of gneiss
gneiss
Most of this region is underlain by Proterozoic granite-gneiss-schist terrains.
From the en.wikipedia.org
Baltistan is a mass of lofty mountains, the prevailing formation being gneiss.
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Most of the Outer Hebrides of Scotland have a bedrock formed from Lewisian gneiss.
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Rafts of metamorphosed sediments, older than the gneiss are embedded between them.
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Around the 6th century, the builders had moved from limestone to the harder gneiss.
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The base rock is primarily gneiss and granite that dates to the Precambrian period.
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The mountains are composed of granite, gneiss, marble, schists and quartzite.
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The soil of the South is made up primarily of metamorphic rock, particularly gneiss.
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The gneiss consists of alternating bands of light and dark colored minerals.
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- A laminated metamorphic rock similar to granite
- Gneiss ("nice") is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks.
- A rock approaching granite in composition, but more or less laminated, and really produced by the alteration of a sedimentary deposit after its consolidation.
- A type of metamorphic rock formed as older rocks recrystallize under heat and stress from pressure characterized by a layering of light and dark bands or streaks.
- A coarse-grained metamorphic rock with a characteristic type of layering resulting from alternating layers of light-colored and dark-colored minerals. Its composition is generally similar to that of granite.
- (pronounced "nice") a granite-like metamorphic rock used to build the exterior walls of the Capitol
- A banded metamorphic rock. Note that the bands only rarely relate to structure (e.g. bedding) within the original (pre-metamorphic) rock - they form due to mineral segregation during metamorphism and or concurrent deformation.
- Hard course grained metamorphic rock, not easily worked. It is also known as a type of granite, composed of mica, quartz, and schist, with additional iron, magnesium and silicates.
- A metamorphic rock composed, like granite, of quartz, feldspar or orthoclase, and mica but distinguished from it by its foliated or laminated structure
