Andesite and dacite are produced by stratovolcanoes.
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.
Mount St. Helens is known for its layers of volcanic rocks, including basalt and andesite, with eruptions of dacite lava forming domes. These different types of volcanic rocks indicate the diverse magma compositions present beneath the volcano, leading to varying eruption styles and outcomes.
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.
Mount Pinatubo is composed of andesite, a type of volcanic rock, as well as dacite. It also contains layers of lahar deposits made up of volcanic ash, rocks, and debris from previous eruptions.
A mixture of dacite (65wt% SiO2) and basaltic andesite (53wt% SiO2).
In some cases, yes. However the most recent eruptions have produced dacite.
The main difference between dacite and andesite lies in their silica content. Dacite has a higher silica content than andesite, making it more viscous. Dacite also typically contains more quartz and less mafic minerals than andesite.
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.
Mount St. Helens is known for its layers of volcanic rocks, including basalt and andesite, with eruptions of dacite lava forming domes. These different types of volcanic rocks indicate the diverse magma compositions present beneath the volcano, leading to varying eruption styles and outcomes.
It varies in composition, but is usually andesite, dacite, or rhyolite.
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.
A mixture of dacite (65wt% SiO2) and basaltic andesite (53wt% SiO2).
Mount Pinatubo is composed of andesite, a type of volcanic rock, as well as dacite. It also contains layers of lahar deposits made up of volcanic ash, rocks, and debris from previous eruptions.
a lot
Mount Shasta is considered a potentially explosive stratovolcano due to its composition of andesite and dacite lava which can lead to explosive eruptions. However, its most recent eruptions have been relatively non-explosive with mainly effusive lava flows.
== == Rhyolite, basalt, pumice, obsidian, andesite, dacite, tuff, welded tuff, scoria.
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.