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Which extrusive rock has the same composition as andesite?
Dacite is an extrusive rock that has a composition similar to andesite. Both rocks are rich in silica and belong to the intermediate composition category. They form from the volcanic eruption of magma that is intermediate in composition between felsic and mafic.
What is the mineral composition of andesite?
basalt and dacite, and ranges from 57 to 63% silicon dioxide (SiO2)
What kind of rock andesite?
No. Andesite is classed as an 'intermediate' rock, being halfway in composition between a mafic and felsic rock. Mafic rocks are those that contain alot of ferromagnesian minerals (iron and magnesium) which give mafic rocks their dark colouring. Typical ferromagnesian minerals include olivine and pyroxene. Typical mafic rocks are basalt and gabbro. Felsic rocks, on the other hand, are low in magnesium and iron and are usually light in colour, such as granite and rhyolite. Andesite therefore typically contains a mixture of both felsic and mafic minerals and is classed as 'intermediate'.
What are some igneous rocks other than granite basalt pumice rhyolite and obsidian?
Other intrusive igneous rocks include gabbro, diorite, syenite, monzonite, granodiorite, monzodiorite, anorthosite, troctolite, peridotite, and pyroxeneite. Extrusive igneous rocks include dacite, andesite, phonolite, and trachyte when classified by composition, and tuff, and scoria in terms of texture.
What is the difference between tonalite and dacite?
Dacite is an extrusive rock while tontalite (along with granodiorite) is an iuntrusive equivalent. While dacite forms on the surface as the result of a volcanic eruption, tontalite forms when magma of a similar composition solidifies underground.
What rock types does the Cotopaxi volcano have?
The Cotopaxi volcano in Ecuador is primarily composed of andesite and dacite rock types. Andesite is a volcanic rock with an intermediate composition between basalt and rhyolite, while dacite has a similar composition to andesite but with more silica content.
What type of lava does the composite volcano has?
It varies in composition, but is usually andesite, dacite, or rhyolite.
Which extrusive rock has the same composition as andesite?
Dacite is an extrusive rock that has a composition similar to andesite. Both rocks are rich in silica and belong to the intermediate composition category. They form from the volcanic eruption of magma that is intermediate in composition between felsic and mafic.
What is the composition of magma of popocatepetl?
A mixture of dacite (65wt% SiO2) and basaltic andesite (53wt% SiO2).
What types of igneos rocks are found in Mount Tambora?
Mount Tambora in Indonesia primarily consists of andesite and dacite rocks. These igneous rocks were formed from the cooling and solidification of magma beneath the Earth's surface. Andesite is a fine-grained rock that is intermediate in composition between basalt and rhyolite, while dacite is a fine-grained volcanic rock with a similar composition to andesite but with higher silica content.
Which volcanoe have eruptions of andesite and dacite?
Andesite and dacite are commonly associated with stratovolcanoes, such as Mount St. Helens in the United States and Mount Merapi in Indonesia. Both of these volcanoes have experienced eruptions that involved andesitic and dacitic magma compositions.
What is dacite and rhyodacite?
Rhyodacite are both intermediate-felsic volcanic rocks. They form from the eruption of highly viscous silica rich magma. In terms of composition dacite is in between andesite and rhyolite while rhyodacite is in between dacite and rhyolite. They are similar rocks, generally erupting explosively but occasionally forming lava domes or very thick lava flows.
What kind of lava flows from Popocatepetl?
Popocat?petl produces a mixture of andesitic and dacite lava in the current cycle of activity. Andesitic, or Basaltic Andesite, is black volcanic rock that contains 55% silica. Dacite, on the other hand, is an igneous, volcanic rock that has a composition that is between Andesite and Rhyolite.
What is the mineral composition of andesite?
basalt and dacite, and ranges from 57 to 63% silicon dioxide (SiO2)
What type of magma does nevado del ruiz have?
Nevado del Ruiz is a stratovolcano, so the composition of the magma likely varies over time. The tragic eruption of 1985 involved magma of andesite or dacite composition.
What rock forms volcanic lava cools?
Extrusive igneous rock. To be more specific you have to know the composition of the lava. The most common type is basalt, but other types include andesite, dacite, and rhyolite.
What type of lava forms mt fuji?
The lava that formed Mount Fuji is primarily composed of dacite and andesite, which are intermediate in composition between basaltic and rhyolitic lava. This type of lava is viscous and flows relatively slowly, contributing to the steep slopes of Mount Fuji.
