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How do you classify igneous rocks from other types of rock?
Igneous rocks are identified by first looking at the color index. Felsic igneous rocks contain mostly potassium feldspar. Intermediate igneous rocks contain mostly plagioclase feldspar. Mafic igneous rocks contain pyroxene, olivine, and plagioclase feldspar. Ultra mafic igneous rocks contain mostly olivine. Then igneous rocks are identified based on texture. For example, the texture of igneous rocks can be aphanitic, pegmatitic, phaneritic, glassy, vesicular, etc.
Why are igneous rocks not contain fossils?
yes
Which rocks contain fossils sedimentary or igneous?
sedimentry
Why can't geologist use the carbon-14 method to date igneous rocks?
Igneous rocks do not contain much carbon.
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.
Do igneous rocks contain evaporites?
No. Evaporites are found in sedimentary rocks.
What kind of rocks do not have layers?
Igneous rocks, non-foliated metamorphic rocks, and evaporites do not have layers.
How do you classify igneous rocks from other types of rock?
Igneous rocks are identified by first looking at the color index. Felsic igneous rocks contain mostly potassium feldspar. Intermediate igneous rocks contain mostly plagioclase feldspar. Mafic igneous rocks contain pyroxene, olivine, and plagioclase feldspar. Ultra mafic igneous rocks contain mostly olivine. Then igneous rocks are identified based on texture. For example, the texture of igneous rocks can be aphanitic, pegmatitic, phaneritic, glassy, vesicular, etc.
Rocks which contain a variety of minerals are examples of a?
Igneous Rocks
Is primarily made up of igneous rocks.?
mantle
Why are igneous rocks not contain fossils?
yes
How are igneous and sedimentary alike?
Both are composed of minerals. Some sedimentary rocks contain pieces of igneous rocks.
Does an igneous rock contain iron?
Most igneous rocks would likely contain a varying amount of iron.
Which rocks contain fossils sedimentary or igneous?
sedimentry
Why can't geologist use the carbon-14 method to date igneous rocks?
Igneous rocks do not contain much carbon.
Volcanic islands in the deep ocean are composed primarily of what igneous rock type?
Basaltic Igneous Rocks
Diamond falls under which category of rocks?
Igneous rocks are the category of rocks that contain diamonds. The two types of igneous rocks that form diamonds are kimberlites and lamproites.
