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Are metamorphic rocks only formed by igneous rocks?
No. Metamorphic rocks can also from front sedimentary rocks and from other metamorphic rocks.
What rock can only be formed from sedimenta rock or igneous rock?
Metamorphic rocks. With proper heat and pressure sedimentary and igneous rocks can form metamorphic rocks.
Why can’t fossils be formed in metamorphic rock and only in sedimentary rocks and igneous rocks as they cool?
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Are metamorphic rocks forms only by igneous rocks?
Metamorphic rocks can form from any type of rock, including sedimentary and igneous rocks. The key factor is that existing rocks undergo changes in texture, mineralogy, or chemical composition due to heat, pressure, or chemically active fluids.
Are metamorphic rock only made out of from igneous?
No, metamorphic can be formed by either igneous or sedimetary rock.
Can you melt metamorphic rocks?
no, the process only happens to igneous rocks
Are metamorphic rocks volcanic?
No. Only extrusive igneous rocks are volcanic.
Metamorphic rocks can only be formed from?
Metamorphic rocks can be formed from any pre-existing rock type (igneous, sedimentary, or other metamorphic rocks) that undergoes intense heat, pressure, or chemical changes without melting. This process causes the minerals in the rock to recrystallize and reorganize, resulting in a new metamorphic rock with different properties.
Why are metamorphic rocks different from igneous and sedimentary rocks?
The metamorphic processes of heat and pressure can alter the parent rock (sedimentary, igneous, metamorphic) chemically or structurally into a form of rock that can only be created under certain conditions. Metamorphic rocks are not created from sedimentation and lithification or from molten material.
Can metamorphic rocks be sedimentary or igneous rocks?
there are several ways such as heat & pressure, melting, chemical weathering, compression, compaction & cementation, but it depends on the kind of rock it is for what process it has to go through. -Cutegirl99
Is marble an extrusive or an intrusive rock?
Neither. The terms intrusive and extrusive apply to igneous rocks; marble is metamorphic.
Are the minerals which appear in metamorphic rocks largely the same as those in igneous rocks?
The minerals which appear are quite similar chemically but not physically. In metamorphic rocks, foliation can be seen-bands of rocks formed by great pressure, whereas in igneous rocks, this is never present because igneous rocks specifically need to have just previously melted, so therefore, these bands are disorganized and lost. Therefore, igneous rocks clearly don't seem to have any patterns unlike metamorphic rocks. Also, some minerals only form during metamorphism/melting+cooling. Therefore, the chemical composition is usually slightly different. E.g. Garnet is only formed under high-grade metamorphism-high temperatures and pressures. Also, the crystals sizes in igneous rocks depend on how long the rock has had to cool. So therefore, an igneous rock's crystals could be a lot bigger or smaller than a metamorphic rock's crystals. But then again, both rocks have interlocking crystals unlike sedimentary rocks, so in that way, at first glance, they can sometimes look very similar, (depending if it is intrusive of extrusive-metamorphic rocks will look a lot more like intrusive igneous rocks because of how the air affects the magma, (how magma looks when it cools), extrusive rocks look different, (blacker, smaller crystals etcetera).
