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The name of the crack in the earth's surface above a plate boundary?
The crack in the earth's surface above a plate boundary is known as a fault or a rift. These areas are where tectonic plate movement causes rocks to break and shift, resulting in seismic activity like earthquakes.
Definition for andesitic composition?
Andesitic composition refers to a type of igneous rock that is intermediate in composition between basalt and rhyolite. It typically contains minerals such as plagioclase feldspar, amphibole, and pyroxene. Andesitic rocks are commonly found in volcanic arcs and are associated with convergent plate boundaries.
What is source material for andesitic magma?
Andesitic magma is typically sourced from the partial melting of subducted oceanic crust and overlying mantle at convergent plate boundaries. This process results in the formation of a magma with intermediate silica content, giving rise to andesitic volcanic rocks.
How is a valcano different from a mountain?
A volcano forms where magma is close to the surface of the earth. It can be found where an oceanic plate goes underneath a continental plate, or at a hot spot. A volcano builds up pressure and explodes, sending out hot magma. A mountain is just built by plate tectonics, it does not emit magma.
When is the earh uh?
because the plate moves whitch causes a valcano to eurupt thats what makes the earth fall apart
Andesitic rocks have mineral compositions between those of basaltic rocks and?
granitic rocks. They are typically intermediate in silica content and often contain minerals such as feldspar, amphibole, and pyroxene. Andesitic rocks are associated with volcanic activity at convergent plate boundaries.
Where one tectonic plate is pushed under another magma forms and rises toward the surface form where the magma erupts as lava that builds up?
valcano
What are examples of magma?
Examples of magma include basaltic magma, andesitic magma, and rhyolitic magma. Basaltic magma is the most common type and is associated with oceanic volcanic activity. Andesitic magma has intermediate silica content and is found at convergent plate boundaries. Rhyolitic magma is highly viscous and contains high amounts of silica, commonly found in continental volcanic regions.
Where do more active volcuranos ocurr?
Active volcanoes are found on mainly plate margins, with the few examples of hot spots all over the place (e.g. Moana Loa on Hawaii). Volcanoes found at constructive plate margins are more effusive and erupt basaltic lava (e.g. Iceland) and volcanoes found NEAR destructive plate margins are explosive and erupt either andesitic or rhyolitic lava (e.g. Mount Saint Helens-however this volcano might not erupt for quite a while whereas the other two example erupt very frequently).
Which crustal plate can be found between nazca plate and south American plate?
The crustal plate found between the Nazca Plate and the South American Plate is the Antarctic Plate.
What kind of volcanoes are found along continental margins?
Volcanoes found along continental margins are typically stratovolcanoes or composite volcanoes. These volcanoes are characterized by their steep-sided appearance due to alternating layers of lava flows, ash, and volcanic rocks. They are formed where tectonic plates converge and one plate is forced beneath the other in a process known as subduction.
What plate can Sweden be found on?
what plate is Sweden on
