Andesite cools quickly because it forms from material erupted onto the surface, and so is composed to a cool environment.
Lava will cool quickly compared to underground magma.
Andesite is a type of igneous rock that can form both intrusively (inside the Earth's crust) and extrusively (on the Earth's surface). When andesite forms intrusively, it typically cools slowly and can create large crystals.
slowly
Some common igneous rocks include granite, basalt, andesite, and rhyolite. These rocks form from the solidification of molten magma beneath the Earth's surface or from volcanic eruptions. Igneous rocks can be classified as intrusive (plutonic) if they cool slowly beneath the surface, or extrusive (volcanic) if they cool rapidly on the surface.
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Andesite is a type of igneous rock that is typically light to dark gray in color. It forms when magma from the Earth's mantle solidifies and cools relatively quickly. Andesite is commonly found in volcanic regions such as the Andes Mountains in South America.
Igneous rocks that cool above ground are called extrusive or volcanic rocks. Examples include basalt, andesite, and rhyolite. These rocks form when magma erupts onto the Earth's surface and cools rapidly.
No. Andesite is a volcanic rock.
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Andesite is a type of extrusive igneous rock with moderate levels of silica. Andesitic is an adjective used to describe volcanic material with the composition of andesite. For example, andesitic lava will cool to form andesite.
After a volcano erupts, rocks like basalt, andesite, and dacite are commonly found. Basalt is a dark-colored igneous rock that forms from rapidly cooling lava, while andesite and dacite are intermediate to felsic rocks that cool more slowly. Volcanic ash and pumice, which are both types of volcanic glass, may also be present in the aftermath of an eruption.
Andesite is not any age in particular. Some deposites of andesite may be hundreds of millions of years old. However, since andesite is volcanic, some andesite rocks may only be minutes old.