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What determines whether igneous rock is intrusive or extrusive A. the density of the rock B. the chemical composition of the rock C. where crystals in the rock are found D. where the rock was formed?
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The three rock groups are classified?
Igneous: These rocks are volcanic in nature. They are split into two categories in where they cool/crystallize: intrusive (internal) and extrusive (external). Intrusive volcanic rocks cool slowly, so they contain (usually) large crystals, like granites. Extrusive rocks are quite the opposite, in which they cool very quickly. This is where you get your obsidian glass and basalts. Sedimentary: These rocks are depositional and categorized by the kind of sediment it is made up of. Metamorphic: This can be the offspring rock of either a morphosed igneous or sedimentary rock. This metamorphism is accomplished by heat and/or pressure, and during a great length of time.
What rock does magma form when it cools?
Magma forms coarse crystalline intrusive igneous rocks such as granite or gabbro, depending on the chemical composition of the magma.
Do Granite and Gabbro have the same chemical composition?
No. Gabbro is a mafic rock (magnesium and iron silicates) while granite is a felsic rock (referring to lighter elements such as potassium in feldspar). Felsic rock contains fewer heavy elements than mafic rocks. The chemical equivalent to gabbro is basalt, as both are mainly pyroxene and plagioclase feldspar. The difference is that gabbro is intrusive rock and basalt is extrusive.
What determines the form of a substance?
The temperature and the pressure of this substance; also the chemical composition and structure.
Is flint intrusive or extrusive?
Flint is a chemical sedimentary rock formed from the precipitation of silica rich solutions in layers of marine sediments.
Which intrusive and extrusive rocks have the same chemical composition?
Intrusive: Extrusive Equivalent Granite: Rhyolite Diorite: Andesite Gabbro: Basalt
The extrusive counterpart of granite?
The extrusive chemical equivalent of intrusive granite is rhyolite.
Are mafic rocks solely intrusive or extrusive?
No. The terms felsic and mafic refers to the relative content of certain minerals in the magma or rock. A mafic rock can be extrusive like basalt, or intrusive like gabbro. Basalt and gabbro can be identical in chemical composition.
Is silica intrusive or extrusive?
The terms intrusive and extrusive apply to the formation of igneous rocks. Silica is a chemical component of a wide variety of minerals found in many types of igneous, metamorphic, and sedimentary rock. All igneous rocks, both intrusive and extrusive, contain silica.
Is the following is an intrusive igneous body Pyroclast Lava Flow Lahar Batholith?
No. A lahar is a mudflow formed by extrusive igneous material.
What is the difference between rhyolite and granite?
The difference is the size of grains. Rhyolite is the felsic igneous rock with fine-grained size. Whereas, granite is the equivalent in composition but with coarse-grained size.
What are two properties used to classify igneous rock?
Igneous rocks are usually classified by their chemical composition (acidic or basic), and by whether they formed underground (intrusive, characterised by large mineral crystals) or on the surface (extrusive, made of tiny, microscopic crystals). For instance, basalt is a basic, extrusive rock, and granite is an acidic, intrusive rock.
Are the crystal caves in Bermuda intrusive or extrusive?
These terms do not apply to the situation. Intrusive and extrusive are types of igneous rock and like most caves these have been formed in limestone, a sedimentary rock. The chemical action of rain water, which contains dissolved carbon dioxide, was responsible for hollowing them out. The crystalline formations have resulted from the evaporation of watery solutions seeping through the rock.
The three rock groups are classified?
Igneous: These rocks are volcanic in nature. They are split into two categories in where they cool/crystallize: intrusive (internal) and extrusive (external). Intrusive volcanic rocks cool slowly, so they contain (usually) large crystals, like granites. Extrusive rocks are quite the opposite, in which they cool very quickly. This is where you get your obsidian glass and basalts. Sedimentary: These rocks are depositional and categorized by the kind of sediment it is made up of. Metamorphic: This can be the offspring rock of either a morphosed igneous or sedimentary rock. This metamorphism is accomplished by heat and/or pressure, and during a great length of time.
What determines the way a massive star dies?
the star's mass, chemical composition, and size of it when it is born
What characteristics determines the chemical composition of an igneous rock?
An igneous rock is any crystalline or glassy rock that forms from cooling of a magma. Color and texture help determine the chemical composition of the rock.
What rock does magma form when it cools?
Magma forms coarse crystalline intrusive igneous rocks such as granite or gabbro, depending on the chemical composition of the magma.
