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At divergent boundaries is what metamorphism results from extrusion of basaltic lava?
A metamorphic rock formed from Basalt is Schist. a.k.a. Green Schist
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What kinds of magmas forms at divergent boundaries?
Usually a dense basaltic magma with low water content.
What type of boundary is along ocean ridges?
Constructive or divergent. The ridge formed is of basaltic rock type (though this is a generalisation), and is a source of volcanic activity. Iceland was formed as a result of the sea-floor spreading.
What are the tectonic settings associated with the formation of basaltic composition magmas?
Basaltic composition magmas are commonly associated with divergent plate boundaries where seafloor spreading occurs, such as mid-ocean ridges. They can also form in hot spots, such as Hawaii, where mantle plumes rise through the crust. Additionally, basaltic magmas can be generated at convergent plate boundaries where oceanic crust subducts beneath continental crust.
What type of volcanic rock is generally found at divergent plate boundaries?
Basalt is the most common type of volcanic rock found at divergent plate boundaries due to its low silica content, which allows it to flow easily and form extensive lava flows.
Why are basalts produced on divergent plate boundaries?
Basalts are produced on divergent plate boundaries because the extensional forces at these boundaries cause the mantle to melt, generating magma that rises to the surface and solidifies as basaltic rock. This process, known as decompression melting, occurs due to the reduced pressure on the mantle rocks as the tectonic plates move apart, leading to the formation of basaltic oceanic crust.
What types of volcanic rocks are generally found at divergent plate boundaries?
Basaltic rocks are generally found at divergent plate boundaries. These rocks form from the solidification of lava that erupts from mid-ocean ridges and oceanic rift zones, which are common features at divergent plate boundaries. Basaltic rocks have a low silica content and are dark in color.
What kinds of magmas forms at divergent boundaries?
Usually a dense basaltic magma with low water content.
What kind of magma is formed at divergent boundaries?
Usually a dense basaltic magma with low water content.
What happened at divergent boundaries?
divergent boundaries happen when 2 plates move apart or divide
This type of magma is dark in color?
This type of magma is called basaltic magma. It has a lower silica content, which gives it a darker color compared to other types of magma. Basaltic magma is commonly associated with volcanic activity at divergent plate boundaries.
What type of boundary is along ocean ridges?
Constructive or divergent. The ridge formed is of basaltic rock type (though this is a generalisation), and is a source of volcanic activity. Iceland was formed as a result of the sea-floor spreading.
What are the tectonic settings associated with the formation of basaltic composition magmas?
Basaltic composition magmas are commonly associated with divergent plate boundaries where seafloor spreading occurs, such as mid-ocean ridges. They can also form in hot spots, such as Hawaii, where mantle plumes rise through the crust. Additionally, basaltic magmas can be generated at convergent plate boundaries where oceanic crust subducts beneath continental crust.
Which would you expect to cause the greatest amount of contact metamorphism an intrusion of basaltic magma or an intrusion of rhyolitic magma?
An intrusion of basaltic magma would likely cause greater contact metamorphism compared to an intrusion of rhyolitic magma. Basaltic magma has higher temperatures and higher fluidity, allowing it to heat surrounding rocks more effectively and induce more intense metamorphic changes.
What type of volcanic rock is generally found at divergent plate boundaries?
Basalt is the most common type of volcanic rock found at divergent plate boundaries due to its low silica content, which allows it to flow easily and form extensive lava flows.
What is the midatlantic ridge?
The Mid-Atlanic Ridge is the divergent boundary that is responsible for seafloor spreading. Consisting mostly of divergent boundaries, with transform faults as well, this is the site where new oceanic crust is added, increasing the size of the ocean. This location is dotted with underwater volcanoes as igneous basaltic magma is added to fill in the gap left as the oceanic plates drift away.
Why are basalts produced on divergent plate boundaries?
Basalts are produced on divergent plate boundaries because the extensional forces at these boundaries cause the mantle to melt, generating magma that rises to the surface and solidifies as basaltic rock. This process, known as decompression melting, occurs due to the reduced pressure on the mantle rocks as the tectonic plates move apart, leading to the formation of basaltic oceanic crust.
What type of magma do you find at each of the different plate boundaries?
At divergent plate boundaries, you typically find basaltic magma. At convergent plate boundaries, where one plate is forced beneath another, you find andesitic to rhyolitic magma due to the melting of continental crust. At hot spots, which are unrelated to plate boundaries, you can find a variety of magma types depending on the composition of the mantle source.
