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How can rocks appear at the top of mountains that were once under the sea millions of years ago?
There is something called plate tectonics at work. The entire crust of the earth is made up of different pieces, or plates, which move around slowly on top of a lower level called the mantle. As these plates move around, sometimes they move or "crash" into each other, and land that was once at a low level is pushed up higher and higher to form mountains.
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What kinds of rocks are mountains made of?
Mountains are made up of many different types of rocks. It also depends on the where the mountain is located and how it formed. For example, mountains formed by recent volcanic activity will be mostly composed of Igneous rock. Though most mountains and the like are made up of a combination of igneous, sedimentary and metamorphic rock.
How long does it take rocks to form?
Some extrusive rocks such as lava and ejecta form in minutes. Stalactites may form in a few tens of years, but commonly longer. Other rocks may take millions of years, and may have to be recycled through metamorphism to attain their final form.
How can rocks on high mountains have fossils?
The material on the mountains was not always up there. Mountains are generally created by what is called uplift. And places that were under water and then had remains laid down and fossilized can be uplifted through long periods of time to create mountains. The fossils are then found up there in the mountains. The geologic process is fairly well understood and modeled by geologists.
How mountains were made?
Mountain were made by huge segments of the earth's crust also know as tectonic plate. Over millions of year of volcanic activity under the earths crust forced these plates to shift. When to plates meet, the force of the volcanic pressure and the to plates may be pushed upward and create mountains.
What are complex mountains?
Complex mountains are formed when the crust is subjected to very large compressive forces. Under large compressive forces and moderately high temperatures and pressures, parts of the crust are bent into large folds and broken into slices that slide over underlying rocks. The slices of the rock slide away from the source of compression. GRADE 7 SCIENCE
How can rocks be changed?
usually, due to friction with sand ( in desert ), water ( in rivers ) and ice ( usually in mountains) that causes glaciers..thats the shape of them. if you mean the types of rocks..for millions of years ago, rocks as we know them where buried under layers of sand and with lots of different levels of heat and pressure, new types of rocks are formed
What force causes sedimentary rocks to be transformed into metamorphic rocks?
Pressure and heat from being buried under mountains.
What forces cause sedimentary rocks to transform into metamorphic rocks?
Pressure and heat from being buried under mountains.
Why metamorphic rocks appear to be flattened or crushed?
Becausethey are under a great pressure under the Earth's surface.
How did the mountains appear in Japan?
Japan is on the ring of fire, most of the mountains there are volcanos resulting from the subduction of the pacific plate under the asian plate.
Are the Rocky Mountains fold mountains?
No, the rocky mountains were not formed on a destructive plate. That is wrong, they are fold mountains, they were formed on a weakening in the plate, and millions of years ago the plate was under pressure and then it buckled and the Rockies were formed.
What kinds of rocks are mountains made of?
Mountains are made up of many different types of rocks. It also depends on the where the mountain is located and how it formed. For example, mountains formed by recent volcanic activity will be mostly composed of Igneous rock. Though most mountains and the like are made up of a combination of igneous, sedimentary and metamorphic rock.
Which type of rock is most commonly found buried deep under mountains or in the Earth's crust?
igneous rocks
How long does it take for each type of rock to form?
Igneous rocks can form quickly in days to months from cooling magma, sedimentary rocks can take hundreds to millions of years from weathering and deposition of sediments, and metamorphic rocks can form over millions of years from existing rocks under high heat and pressure.
Why do fold mountains have metamorphic rocks?
Most mountains are metamorphic due to the environment they are formed. The folding occurs deep below the surface where the rocks are only partially melted, and under increasing pressures and temperatures. This causes the rocks to bend (fold) and recrystallize into metamorphic versions of the origin rocks.
Are the Alps folded volcanic or fault block?
Fault Block. That is wrong, they are fold mountains, they were formed on a weakening in the plate, and millions of years ago the plate was under pressure and then it buckled and the Rockies were formed.
How long does it take rocks to form?
Some extrusive rocks such as lava and ejecta form in minutes. Stalactites may form in a few tens of years, but commonly longer. Other rocks may take millions of years, and may have to be recycled through metamorphism to attain their final form.
