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Why are the names intrusive and extrusive appropriate for the types of igneous rocks?
Because intrusive rock forms as magma cools below Earth's surface. Extrusive on the other hand, forms as lava cools on Eath's surface.
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Why are the names intrusive and extrusive appropriate for the two types of igneous rocks?
The names intrusive and extrusive are appropriate because they describe where the rocks form. Intrusive rocks form inside the Earth's crust from magma that cools slowly, resulting in a coarse texture. Extrusive rocks form on the Earth's surface from lava that cools quickly, resulting in a fine texture.
Some igneous rocks cool at the surface and some cool underground. What are the names of these two types?
Underground = intrusive/plutonic aboveground = extrusive/volcanic
Why can two igneous rocks have two same minerals but different names?
Although chemically equivalent, they would be different in their method of formation. Granite is an intrusive igneous rock, cooled from magma under the surface. The rock rhyolite is the chemical equivalent of granite, but formed on the surface, making it an extrusive igneous rock. Intrusive rocks have larger crystals.
Why can two igneous rocks have the same name minerals but different names?
Although chemically equivalent, they would be different in their method of formation. Granite is an intrusive igneous rock, cooled from magma under the surface. The rock rhyolite is the chemical equivalent of granite, but formed on the surface, making it an extrusive igneous rock. Intrusive rocks have larger crystals.
What are some names of extrusive igneous rocks?
== == Rhyolite, basalt, pumice, obsidian, andesite, dacite, tuff, welded tuff, scoria.
What are some names of intrusive igneous rocks?
Granite, Gabbro, Diorite, Syenite, Monzonite, Tonalite
What are the names of a plutonic solid?
Solid plutonic rocks are intrusive igneous rocks such as granite and gabbro.
Why can two igneous rocks have the same minerals but different names?
The rocks may have different textures
What type of rock is an igneous rock?
Igneous rocks are usually classified first by their color index. The color index is separated into four categories. Felsic rocks are the lightest and are composed of mostly quartz and potassium feldspar. Intermediate rocks are the second lightest and are made up of mostly plagioclase feldspar, pyroxene, amphibole, and biotite. Mafic rocks are made up of plagioclase feldspar, pyroxene, and amphibole. Ultramafic is made up of mostly olivine, with pyroxene and amphibole.
What are the names for volcanic rock?
well it could be igneous rock if you are talking about specific types (there are a lot) , but its called tephra and/or pyroclastic rock that is thrown from the volcano... the smallest of tephra is ash, then lapilli then bombs, then blocks.
What are other names for igneous rock?
Volcanic rocks
What are the names of the different types of igneous intrusions?
The main types of igneous intrusions are dikes (vertical tabular bodies), sills (horizontal tabular bodies), laccoliths (intrusions causing overlying strata to arch up), and batholiths (large, dome-shaped intrusive formations).
