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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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How does gneiss feel?
A fractured surface--rough. A polished or worn surface--smooth.
How does weathering and erosion shape earths surface?
Weathering and erosion shape earths surface by changing earths surface by having extreme forces that change earth.
What is the process that breaks up rock on earths surface?
weathering breaks rocks on earths surface
Do cirrus clouds form near or far from earths surface?
They form far above the earths surface.
What is true about all plutons?
they form above earths surface (THIS ANSWER IS NOT CORRECT) They Form BELOW earths surface(:
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.
How does gneiss feel?
A fractured surface--rough. A polished or worn surface--smooth.
Is gneiss smooth and shiny?
Gneiss is a foliated metamorphic rock, displaying bands of light and dark minerals.
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.
What forces below earth surface shape landforms?
The tectonic plates below earths surface shape earths landforms
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.
How does weathering and erosion shape earths surface?
Weathering and erosion shape earths surface by changing earths surface by having extreme forces that change earth.
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
