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Why are fossils formed in sedimentary rocks but not in igneous rocks?
Wiki User
∙ 12y ago
Because sedimentery rock is formed under the sea, sediment collects at the bottom of the ocean, and so does a few dead sea creatures, then t gets squashed by other sediment, igneous rock is formed by lava cooling, so there is no fossils in it.
Wiki User
∙ 12y ago
Wiki User
∙ 12y agoFossils are the remains of once-living organisms which lived on, in or near to sediments where their remains could be buried. If they were found in igneous rocks they would have had to have lived in molten lavas or similar magmas which is clearly impossible. The few fossils found in solid lavas tend to be charred remains of trees caught in a lava flow.
Wiki User
∙ 11y agoOrganisms and their traces are more easily preserved in the soft sediments that lead to the creation of sedimentary rock.
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What is the difference between igneous and sedimentary rocks?
Igneous rock is formed from the solidification of magma or lava. Sedimentary rock is formed from the lithification of sediments, generally.
What are the three types of rock and their formation?
there are 4 bill bob and jerry and the one in abi's head she likes to call a brain Igneous, Sedimentary, and Metamorphic.
True or false sedimentary rock can be formed from changes in igneous rock but idneous rock cannot be formed changes in the sedimentary rock?
False Sedimetary rocks can be formed from changes in igneous rock, and igneous rock can be from changes in sedimentary rock.
What are 2 things that can change rocks to other types of rocks?
There are three main types of rocks: igneous, sedimentary, and composites. Igneous rocks are formed when sedimentary or composite rocks experience extremes of heat and pressure. Sedimentary rocks are formed when smaller particles are overlaid for extended periods of time. Composite rocks are formed a mixture of elements under pressure.
What rocks are formed from molten rock that has solidified?
Igneous rocks, which come in many different forms.
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 can’t fossils be formed in metamorphic rock and only in sedimentary rocks and igneous rocks as they cool?
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Which rocks contain fossils sedimentary or igneous?
sedimentry
Do igneous rocks usually contain fossils?
Igneous rock is composed of lava or magma that has cooled and solidified. Fossils are only found within the various strata of sedimentary rock.
What do sedimentary rocks have more often than metamorphic or igneous rocks?
Sedimentary rocks have numerous fossils
More often than metamorphic or igneous rocks sedimentary rocks have what?
Sedimentary rocks have numerous fossils
Does igneous sedimentary and metamorphic rocks contain fossils?
No. In general, there are no fossils in igneous or metamorphic rocks, because the high heat and pressure involved would destroy any fossils. Fossils are almost always found in sedimentary rock.
What kind of rock are fossils found in?
Igneous rocks.
What types of stones are most likely to contain fossils?
There are three basic types of rock; sedimentary, igneous and metamorphic. Igneous rocks are formed by volcanic action and don't contain fossils. Sedimentary rocks are formed, usually under water, by eroded material accumulating. Metamorphic rocks are formed when sedimentary rocks are changed by heating and/or pressure. From this, you can see that sedimentary rocks are the most likely to contain fossils, although metamorphic rocks also can contain fossils. Any sedimentary rock can contain fossils, but some make fossil hunting easier. Shales and mudstones are particularly good; chalk is pretty much entirely made of fossils - it's formed of skeletons of small organisms, but its difficult to see the individual fossils.
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
Do sedimentary rocks contain fossil?
yes fossils are found in sedimentary rocks but not in igneous and metamorphic rocks. hope this helps
What does the rock cycle have anything to do with fossils?
Sedimentary rocks are rocks that are formed by layers of different things compacting very tightly. These layers can have a lot of different things in them, like fossils. So, sedimentary rocks are partially made up of fossils.
