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Sedimetary rocks can be formed from changes in igneous rock, and igneous rock can be from changes in sedimentary rock.

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Q: True or false sedimentary rock can be formed from changes in igneous rock but idneous rock cannot be formed changes in the sedimentary rock?
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Can high pressure can change an igneous rock into a sedimentary rock?

No, high pressure alone cannot change an igneous rock into sedimentary rock; however, the reverse is true. High pressure can change sedimentary rock into igneous rock.


What type of rocks cannot turn into sedimentary rocks?

No rock. Any rock can turn into sedimentary rock, such as granite (igneous rock) and slate (metamorphic rock). Even sedimentary rock can turn into other sedimentary rock.


Is sandstone intrustive or extrusive?

It cannot be describe as either. Intrusive and extrusive are terms used to describe igneous rocks. Sandstone is sedimentary.


Is a limestone mafic?

No. The terms mafic and felsic apply to igneous rocks. Limestone is a sedimentary/biochemical rock and so cannot be said to be mafic, felsic, or intermediate.


Why don't we find fossils in igneous and metamorphic rocks?

Fossils are remains or impressions of living organisms and they are found in the sediments in or near where they lived. Living organisms cannot live in a molten magma which cools to become an igneous rock. Metamorphic rocks used to be sedimentary and igneous rocks but they were buried very deep under mountains and any traces of fossils in the sedimentary layers have been removed by the heat and pressure which altered the rock.


Is the moon made of the same three kinds of rock as the earth?

No. Since the moon is not geologically active it cannot produce metamorphic rock and since it has no forces of erosion and deposition it cannot produce sedimentary rock. As a result, all the rocks on the moon are igneous


Is there anything that cannot become a sedimentary rock?

Probably no. Sedimentary rock can be formed from the weathering of igneous and metamorphic rock, from coral and shells, and even from peat and clay. Given enough time, pressure, and warmth just about anything might be compacted into becoming sedimentary rock. If it is soft, it just compacts more and takes longer before becoming stone.


If you found a rock with seashells in it would it be a sedimentary rock an igneous rock or a metamorphic rock?

It is definitely a sedimentary rock because you cannot find sea shells where metamorphic rocks are formed, nor can you find them in magma and lava. This is because metamorphic rocks are formed below the earths surface where the plates of the earth squash an existing rock even small to make it metamorphic, and igneous rocks are obviously formed in volcanoes where the heat and pressure would melt the fossil.


Why are sedimentary rocks the only rocks with fossils?

Fossils are the hard remnant material of living organisms and hard evidence can be found from the fossils of early phanerozoic. During the early stages of formation of the earth it is supposed to consist of Igneous rocks only. Refer to the major processes of fossilization and it is found that fossils are usually related to areas nearby streams and basins (organisms require water for survival) and hence the only form of rocks can be sedimentary. In the case of metamorphic rock the remnants cannot sustain temp. and pressure changes and deform leaving no traces.


Why igneous rocks cannot contain fossils?

It's due to the high temperature of magma. Igneous rock is formed from the cooling of lava and magma.


How do unconformities make it difficult to determine ages in rock layers?

Sedimentary rock is composed of the weathered remains of a variety of rocks of all ages. It would therefore only be possible to date specific components of a sample, none of which would equate to the age of the sedimentary rock as a unit. Sedimentary rock is dated by its association in the geologic column with igneous and metamorphic rock which can be dated by radioactive dating techniques.


Which process cannot happen in a rock cycle?

Sedimentary melting cooling and hardening Metamorphic