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Igneous rocks are formed from magma and were - at one time - hot enough to melt, then they often moved all over the place, once molten. Any fossil would have burned away or disintegrated by the movement. Organisms do not normally survive intact because of the intense temperatures.
Fossils are most unlikely to be found in igneous rocks because they cannot survive through the process of formation of magma.
Most fossils are preserved plant or animal bodies living in or near water. There are no animals or plants which can live in molten magma so you will never find them in cooled magma, which is an igneous rock. There are however, exceptions. For example, where a lava flow covers a tree. The tree is burnt but the impression of it remains in the rock.
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∙ 7y ago
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∙ 11y agoIgneous rock does not contain fossils because igneous rock is solidified lava, or lava that has cooled and hardend into rock. So since lava is really hot, the organism that wanders into it will be burned bones and all. That's why there are no fossils in igneous rock.
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∙ 13y agoFossils are the remains or impressions of living creatures or plants. Living things cannot exist in molten magma, which is what igneous rocks were before they cooled.
Metamorphic rocks do not contain fossils as they were buried, heated and put under great pressure which would remove any traces of once living organisms.
Wiki User
∙ 14y ago== == Igneous rocks are formed from magma. Organisms do not normally survive intact because of the intense temperatures. There are exceptions however. See the related link below.
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∙ 12y agoMs Whitty my science teacher and she says that the high temperature of the molten rock from which igneous rock forms destroys any trace of plants or animals
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∙ 12y agoNo. Igneous rocks do not contain fossils, because fossils cannot withstand the temperature during melting process, that leads to the formation of magma.
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∙ 12y agoIgneous rock was formed from cooling lava. Any organic matter that could have become fossilized would have melted.
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∙ 8y agoAny remains of organisms that come in contact with molten rock will be destroyed.
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∙ 13y agobecause its made from lava.
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∙ 12y agoBecause of how or when they were formed.
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What is the difference between the two types of igneous rocks?
Extrusive igneous rocks form from magma that erupted onto the surface as lava, where it cooled quickly. On the other hand, intrusive igneous rocks form from magma that cooled slowly, deep underground.Obsidian has tiny crystalsGranite has large crystalsIgneous rocks do not contain any fossils. This is because any fossils in the original rock will have melted when the rock melted to form magma.
Can metamorphic rocks form form igneous but not from sedimentary rocks?
Metamorphic rocks can form from both igneous and sedimentary rocks
Which igneous rocks form below earth's surface?
Intrusive igneous rocks form from cooled magma below Earth's surface.
Why are fossils preserved in sedimentary rocks not in igneous rocks?
igneous rock form from hardened lava so something would have to be caught in the lava flow which would destroy whatever was caught not allowing any time for it to fossilize.
What kind of rock do fossils form?
Sedimentary rock, its rarely found in metamorphic and never found in igneous rock because it would make the fossil of the animal worped and changed. It wouldn't be with the original form on metamorphic and igneous would destroy the whole fossil.
Does lamprophyre form fossils?
A lamprophyre is a type of ultramafic intrusive igneous rock. It is very rare for fossils to be formed in igneous rocks (and they usually only form as mold fossils in extrusive deposits). As such fossils will not form in lamprophyres.
What type of rock can form fossils?
a lot of rocks can sometimes can become a fossils. igneous rock
Why do rock fossils form in sedimentary rock and not in igneous rock?
because sedimentary rocks are on the top layer, while igneous rocks are were the magma is
Why do rock fossils form in sedimentary rock and not in igneous rock-?
Fossils are formed in sedimentary rock because the rock is formed at temperatures that do not destroy the fossils like the igneous rocks would.
Why do rock fossils form in sedimantry rock and not in igneous rock?
Fossils usually form when the remains of an organism are buried gently under sediments which later turn into stone. Intrusive igneous rocks form at depths within Earth where no life is found. Extrusive igneous (volcanic) rocks are so hot when they are deposited that any remains of organisms are usually incinerated. Fossils do occur in volcanic rocks, but very rarely.
What is the difference between the two types of igneous rocks?
Extrusive igneous rocks form from magma that erupted onto the surface as lava, where it cooled quickly. On the other hand, intrusive igneous rocks form from magma that cooled slowly, deep underground.Obsidian has tiny crystalsGranite has large crystalsIgneous rocks do not contain any fossils. This is because any fossils in the original rock will have melted when the rock melted to form magma.
When molten rocks cools what rocks form?
igneous rocks
Which of these can form fossils bones and leaves skin hair and muscles composite rocks and plants igneous and sedimentary rocks?
I think skin, hair, and muscles form a fossil
Why do the other two main types of rocks not contain fossils?
Igneous rocks form directly from a melt, hence there are no fossils contained within them. Metamorphic rocks are pre-existing rocks (sedimentary, igneous, or even metamorphic rocks themselves) which have undergone significantly increased pressures and/or temperatures. Any structure(s) or fossils which may have been present tend to be destroyed, reworked, or have their character diminished. Additionally, the presence or absence of water can often cause a wide variation in the mineral assemblages.
Can metamorphic rocks form form igneous but not from sedimentary rocks?
Metamorphic rocks can form from both igneous and sedimentary rocks
Can Metamorphic rocks can form from igneous but not from sedimentary rocks.?
Metamorphic rocks can form from both igneous and sedimentary rocks
Can metamorphic rocks can form from igneous but not from sedimentary rocks?
Metamorphic rocks can form from both igneous and sedimentary rocks
