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Gneiss is a metamorphic rock that is formed when heat and pressure is applied to an igneous or sedimentary rock. The old rock does not melt completely but reorganizes it's minerals to form banks of foliation giving it the light/dark bands. Gneiss is formed when you have a parent rock that is rich in silica. Since most of the continental crust is silica rich, gneiss it a common rock. It is the highest grade of metamorphic rock in the metamorphic sequence. The sequence goes like this: slate - schist - phyllite - rock.
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What is a rock that forms from other rock due to heat and pressure beneath earths surface?
A rock that forms from other rocks due to heat and pressure beneath the Earth's surface is called a metamorphic rock. Examples include marble, slate, and gneiss.
How does gneiss feel?
A fractured surface--rough. A polished or worn surface--smooth.
What do we call a measure of height above earths surface?
Height above earths surface is called elevation
What is the name of earths surface layer?
The Earth's surface layer is called the crust.
Why are cobbles and boulders composed of Precambrian gneiss commonly found on top of the surface bedrock in the Catskills?
Cobbles and boulders composed of Precambrian gneiss are commonly found on the top of the surface bedrock in the Catskills because they were deposited there by glacial action during the last Ice Age. Glaciers transported these rocks from their original bedrock source areas and left them scattered across the region as they melted. The resistant nature of gneiss allows these rocks to remain on the surface long after the glaciers have retreated.
Where would gneiss be in the US?
Gneiss is a part of the earths lower crust. No matter where you drill you will eventually uncover gneiss.
What is a rock that forms from other rock due to heat and pressure beneath earths surface?
A rock that forms from other rocks due to heat and pressure beneath the Earth's surface is called a metamorphic rock. Examples include marble, slate, and gneiss.
What percent of the earths surface is the US?
100
How much of earths oceans cover earths surface?
70% or 80% of water covers the earths surface
Does the outer core cover earths surface?
No the crust covers earths surface
Why are map projecters needed?
to draw the earths surface.
Why are there are almost no extrusive ultra basic rocks in earths crust?
There are almost no extrusive rocks on the earths surface because they are all under the earths surface. They are mainly lower than the earths surface.
What forces below earth surface shape landforms?
The tectonic plates below earths surface shape earths landforms
What Continuous movement of water from Earths surface to the and back to earths surface?
it is water cycle
What is under the earths surface and in the earths crust?
mantle
What is true about plutons?
they form above earths surface (THIS ANSWER IS NOT CORRECT) They Form BELOW earths surface(:
What effect do sea floor and subduction have on earths surface?
They both can change the size of Earths Surface
