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What is the composition of magma of popocatepetl?
A mixture of dacite (65wt% SiO2) and basaltic andesite (53wt% SiO2).
Is dacite a metamorphic rock?
No. Dacite is an extrusive igneous rock.
Is dacite intrusive or extrusive?
Dacite is extrusive. Its intrusive equivalent is granodiorite.
Which volcanoe have eruptions of andesite and dacite?
Andesite and dacite are produced by stratovolcanoes.
How is dacite formed?
Dacite is an extrusive igneous rock; in other words a volcanic rock. It forms when magma of an intermediate-felsic composition erupts from a volcano and cools at the surface. Because if its high viscosity and generally high gas content it usually erupts explosively, forming ash and pumice rather than lava flows. When this is laid down it forms what can be called dacite tuff. In some instances it will erupt in a non-explosive fashion, forming lava domes or extremely slow lava flows.
What is the composition of magma of popocatepetl?
A mixture of dacite (65wt% SiO2) and basaltic andesite (53wt% SiO2).
What is the dacite rock used for?
Dacite rock can be used for filler in aggregate. It is used to build roads but not on concrete areas because it has a high silica content. Ancient civilization used the dacite rock to make tools.
Is dacite a metamorphic rock?
No. Dacite is an extrusive igneous rock.
Is dacite intrusive or extrusive?
Dacite is extrusive. Its intrusive equivalent is granodiorite.
Which volcanoe have eruptions of andesite and dacite?
Andesite and dacite are produced by stratovolcanoes.
What is the dacite's habitat?
Dacite does not have habitat because it is not a living thing; it is a kind of rock. Specifically, dacite is a volcanic rock, so it will be found on and near volcanoes, typically stratovolcanoes.
How is dacite formed?
Dacite is an extrusive igneous rock; in other words a volcanic rock. It forms when magma of an intermediate-felsic composition erupts from a volcano and cools at the surface. Because if its high viscosity and generally high gas content it usually erupts explosively, forming ash and pumice rather than lava flows. When this is laid down it forms what can be called dacite tuff. In some instances it will erupt in a non-explosive fashion, forming lava domes or extremely slow lava flows.
Is dacite foliated or non-foliated?
Neither. Foliation is a term that applies to metamorphic rocks. Dacite is igneous.
What is the difference in composition between a dacite and an andesite?
Dacite is more felsic in composition, containing more silica.
What is chemical formula of quartz?
Silica (silicon dioxide, SiO2)
What is the approximate energy content of a litre of petrol?
35 MegaJoules
What is the approximate oxygen content of air?
twenty per cent
