They are all extrusive igneous (i.e. volcanic) rocks of intermediate to felsic composition.
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There are rocks that are extrusive (formed quickly on the surface of the earth) or intrusive (formed within the earth under slow cooling). Both types of extrusive or intrusive rocks can vary in composition from mafic (high iron and magnesium content) to silicic (less heavy ions like Fe and Mg, but with more of the lighter elements like Ca, Na, K, etc.). Extrusive rocks range from most mafic to less mafic as such: Basalt, Andesite, Rhyolite (and are all fine-grained b/c they cooled quickly). Intrusive rocks that cool more slowly and have larger crystals range from most mafic to less mafic as such: Gabbro, Diorite, Granite. Basalt and gabbro have a similar composition, just the crystal size differs from different cooling rates (same for rhyolite and granite).
Strato volcanoes typically have viscous lava with high silica content, known as andesitic or dacitic lava. This type of lava tends to form steep-sided volcanic cones due to its ability to cool and harden quickly, leading to explosive eruptions.
fine grained extrusive rocks can contain Potassium and Plagioclase Feldspar, Quartz, Biotite, Amphibole, Pyroxene and Olivine. these are all the choices for every igneous rocks
Yes, rhyolite contains a significant amount of silicon dioxide (SiO2), which is the main component responsible for its high silica content. Silicon is present in the form of silicon dioxide in rhyolite.
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There are rocks that are extrusive (formed quickly on the surface of the earth) or intrusive (formed within the earth under slow cooling). Both types of extrusive or intrusive rocks can vary in composition from mafic (high iron and magnesium content) to silicic (less heavy ions like Fe and Mg, but with more of the lighter elements like Ca, Na, K, etc.). Extrusive rocks range from most mafic to less mafic as such: Basalt, Andesite, Rhyolite (and are all fine-grained b/c they cooled quickly). Intrusive rocks that cool more slowly and have larger crystals range from most mafic to less mafic as such: Gabbro, Diorite, Granite. Basalt and gabbro have a similar composition, just the crystal size differs from different cooling rates (same for rhyolite and granite).
Hekla has erupted all of the different compositions of magma. So you can find basalt, andesite, and rhyolite as well as all the intermediate rock types formed from the different lavas erupted by Hekla.
The main types of igneous rocks are basalt, granite, andesite, rhyolite, and obsidian. Basalt is fine-grained and forms from rapidly cooling lava, while granite is coarse-grained and forms from slow cooling magma. Andesite and rhyolite fall in between these two in terms of grain size, with obsidian being a volcanic glass with no crystals.
Strato volcanoes typically have viscous lava with high silica content, known as andesitic or dacitic lava. This type of lava tends to form steep-sided volcanic cones due to its ability to cool and harden quickly, leading to explosive eruptions.
fine grained extrusive rocks can contain Potassium and Plagioclase Feldspar, Quartz, Biotite, Amphibole, Pyroxene and Olivine. these are all the choices for every igneous rocks
Yes. All igneous rocks contain oxygen.
Yes, rhyolite contains a significant amount of silicon dioxide (SiO2), which is the main component responsible for its high silica content. Silicon is present in the form of silicon dioxide in rhyolite.
Three minerals commonly found with quartz in andesite rock are feldspar (specifically plagioclase), biotite mica, and amphibole (such as hornblende). These minerals are all typically present in andesite as part of the overall composition of the rock.
Shield volcanoes will erupt basaltic lava. Cinder cones erupt basaltic lava or basaltic andesite lava. Stratovolcanoes often erupt andesite lava, but may erupt basaltic or rhyolitic lava and all intermediate types as well.
Volcanic rocks can be classified into three main types: basaltic, andesitic, and rhyolitic. Basaltic rocks, like basalt, are the most common type of volcanic rock and make up the majority of volcanic landforms on Earth. Andesitic rocks, like andesite, have a composition between basalt and rhyolite. Rhyolitic rocks, like rhyolite, have a high silica content and are associated with explosive volcanic eruptions.
Obsidian, pumice, rhyolite, and granite are all types of igneous rocks that form from the cooling and solidification of molten material from within or on the earth's surface. They have different mineral compositions and textures based on their specific formation processes.