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Metamorphic rocks can only be formed from?
Well, metamorphic rocks can be formed from sedimentary rock OR igneous rock OR other metamorphic rock that has been pushed far beneath the crust of the earth.
Where can you find metamorphic rock?
== == Metamorphic rocks can be found at great depths within the Earth's crust, at the base of mountains, or in contact zones where plutonic intrusions have metamorphosed the host rock via high temperatures. Metamorphic rocks can indeed be found at great depths within the crust, but for a rockhound, finding them elsewhere is not a problem. Areas that have experienced previous glaciation (as far south as Central Illinois in the last period of glaciation) are full of metamorphic erratic rocks, transported and dropped by the ice. Visitors to Colorado can find an abundance of metamorphic rocks in the eroded Rocky Mountains, many dating to the Pre-Cambrian. Californians, too can collect meta's in eroded mountains and in formations such as the San Onofre Breccia. No glaciation? Look around eroded mountains.
How might the surface of the earth be different if it was not divided into techtonic plates?
There might not be any mountain ranges, and the rocks on Earth's surface would be much older. There would also be far less volcanic activity, so there would be fewer igneous rocks.
How far down in the earth can be dug?
So far the farthest down someones gone is 12 km.
When large masses of magma solidify far below earth's surface they form igneous rocks that have what kind of texture?
clastic texture
Metamorphic rocks can only be formed from?
Well, metamorphic rocks can be formed from sedimentary rock OR igneous rock OR other metamorphic rock that has been pushed far beneath the crust of the earth.
What is the most important information on sedimentary rocks?
Probably that they are sedimentary. =] They are made of sediments, and, unlike igneous and metamorphic rocks, are so far unaffected by magma/lava.
Where can you find metamorphic rock?
== == Metamorphic rocks can be found at great depths within the Earth's crust, at the base of mountains, or in contact zones where plutonic intrusions have metamorphosed the host rock via high temperatures. Metamorphic rocks can indeed be found at great depths within the crust, but for a rockhound, finding them elsewhere is not a problem. Areas that have experienced previous glaciation (as far south as Central Illinois in the last period of glaciation) are full of metamorphic erratic rocks, transported and dropped by the ice. Visitors to Colorado can find an abundance of metamorphic rocks in the eroded Rocky Mountains, many dating to the Pre-Cambrian. Californians, too can collect meta's in eroded mountains and in formations such as the San Onofre Breccia. No glaciation? Look around eroded mountains.
How do metamorphic rocks form from igneous rocks and sedimentary rocks?
If any kind of rock-igneous or sedimentary- is far enough beneath the surface, the pressure can change it into a metamorphic rock. Also heat - the effects differ. It doesn't have to be ever so deeply buried, geologically, since metamorphism is usually a orogenic process in the affected sedimentary rock.
How far is the Earth's crust?
the earth's crust is 2100 ki. down the earth.
How do igneous rocks form from sedimentary and metamorphic rocks?
If any kind of rock-igneous or sedimentary- is far enough beneath the surface, the pressure can change it into a metamorphic rock. Also heat - the effects differ. It doesn't have to be ever so deeply buried, geologically, since metamorphism is usually a orogenic process in the affected sedimentary rock.
Do volcanoes have organisms in them?
In some cracks in the rocks and in hydrothermal springs, yes. But not down to the point where magma is present as magma is far too hot to sustained any form of life on earth.
What are the sources of the heat that help metamorphic rock form?
The origin of the heat that creates metamorphic rock can be from friction caused by colliding plates, but by far the vast majority of the heat has originated in Earth's interior, caused by radioactive decay, remnant heat from Earth's formation, and pressure. And butt trolol
How do you know that the earth is in layers?
how do we know about the earth's layers when we never drilled that far down?
How do you know what is under the Earth's surface?
Because people have been far down and we have special tools to see down into the earth.
Why do you think that the Pacific NW is know as a mecca or popular destination for geologists from around the world?
Because of the cascades there are a lot of igneous and metamorphic rocks. Oregon caves is a great example of metamorphic rocks. It is made from marble. I would expect mostly sedimentary and some metamorphic rocks near the ocean since it is fairly far from the cascade range. The volcanoes there are some of the most active. They are responsible for much mineralization due to heat, hydrothermal vents and lava flows. I don't know Oregon very well except the extreme southwest. You would probably do better in the geology section.
When large masses of magma solidify far below earth's surface they form igneous rocks that have?
Coarse-grained texture
