Yes. Many stratovolcanoes vary in the composition of what they erupt over time. They may cycle in the type of material. As the magma chamber cools, the magma somtimes becomes more felsic only to periodically receive and injection of fresh mafic magma from the mantle.
On average composite volcanoes are intermediate, but the magma composition will actually vary over time and from one volcano to another. The full range of magma compositions can be found at some composite volcanoes.
Yes. Stratovolcanoes often vary in what they erupt over time.
They have mafic lava
Shield volcanoes erupt mafic lava.
The 1980 eruption of Mount St. Helens produced dacite, which has an intermediate-felsic composition.
As a shield volcano, Mauna Kea erupts mafic lava.
They can. Composite volcanoes vary in what they erupt. Many composite volcanoes are composed of a mixture of mafic, felsic, and intermediate rock. However, in most cases intermediated or felsic rock predominates.
it has mafic and felsic duhhhhh
Like most cinder cones Paricutin was fed by mafic magma.
The 1980 eruption of Mount St. Helens produced dacite, which has an intermediate-felsic composition.
How are mafic and felsic igneous rocks different
As a shield volcano, Mauna Kea erupts mafic lava.
They can. Composite volcanoes vary in what they erupt. Many composite volcanoes are composed of a mixture of mafic, felsic, and intermediate rock. However, in most cases intermediated or felsic rock predominates.
it has mafic and felsic duhhhhh
Felsic minerals are Silicon-rich; whereas Mafic ones are low in Silicon, but contain Iron and Magnesium.
Like most cinder cones Paricutin was fed by mafic magma.
No. The most violent eruptions involve felsic magma.
Composite volcanoes can erupt both mafic and felsic material, but intermediate material is the most common.
Mafic rocks are denser than felsic rocks because they contain heavier compounds, minerals and other materials, they are ferromagnesian in composition.
Felsic rocks have a lower melting point than mafic rocks and felsic magma has a lower temperature. In other words, felsic magma is not hot enough to melt mafic rock while mafic magma is hot enough to melt felsic rock.
Shield volcanoes are formed from the extrusive igneous rock basalt.basalt