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What happens when you have divergent boundaries by submarine eruptions and intrusions of rhyolitic magma?
Wiki User
∙ 9y ago
Divergent boundaries by submarine eruptions and intrusions of rhyolitic magma will form new crusts of the ocean. This commonly takes place in the hydrosphere.
Wiki User
∙ 9y ago
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Are geological features created by rhyolitic magma Rhyolitic magma promotes eruptions?
Lava domes are large geological features created by rhyolitic magma. Rhyolitic magma promotes plinian eruptions. Plinian eruptions can happen very quickly and shoot lave several miles into the air.
What type of volcanic rock is generally found at divergent plate boundaries?
If the divergent boundary is located between two ocean plates, the lava that erupts will likely be called mafic. This lava is relatively low in silica but high in magnesium and iron.
What melts to form rhyolitic magma?
Rhyolitic magma is a gas. The rhyolitic magma usually has to largest gas contents.
What type of eruptions do mafic magmas cause?
Basaltic magmas are associated with fissure eruptions creating lava flows spilling out from cracks in the crust. This is because basaltic magmas are more viscous and contain a lower concentration of gases than rhyolitic magma and therefore are unable to build up sufficient pressure to produce explosive eruptions.
What type of lava flow does Yellowstone volcano have?
Yellowstone has produced both basaltic and rhyolitic lava flows. It is better known for its ecplosive eruptions, which produce large ash clouds and pyroclastic flows rather than lava flows.
Are geological features created by rhyolitic magma Rhyolitic magma promotes eruptions?
Lava domes are large geological features created by rhyolitic magma. Rhyolitic magma promotes plinian eruptions. Plinian eruptions can happen very quickly and shoot lave several miles into the air.
What type of volcanic rock is generally found at divergent plate boundaries?
If the divergent boundary is located between two ocean plates, the lava that erupts will likely be called mafic. This lava is relatively low in silica but high in magnesium and iron.
Where does obsidian rock cools down?
Obsidian is an glassy, extrusive, igneous rock that is found in areas that have experienced rhyolitic eruptions. Obsidian is formed when the rhyolitic lava comes into contact with water. This quick-cooling results in the glassy texture of obsidian.
What melts to form rhyolitic magma?
Rhyolitic magma is a gas. The rhyolitic magma usually has to largest gas contents.
What is a pumice source?
Pumice is produced in the lava from certain volcanic eruptions. It forms from gas-rich andesitic or rhyolitic lava and has so many gas bubbles that some pumice can float on water.
What type of eruptions do mafic magmas cause?
Basaltic magmas are associated with fissure eruptions creating lava flows spilling out from cracks in the crust. This is because basaltic magmas are more viscous and contain a lower concentration of gases than rhyolitic magma and therefore are unable to build up sufficient pressure to produce explosive eruptions.
What type of lava flow does Yellowstone volcano have?
Yellowstone has produced both basaltic and rhyolitic lava flows. It is better known for its ecplosive eruptions, which produce large ash clouds and pyroclastic flows rather than lava flows.
What is the difference between basalt and rhyolite?
Basaltic magma is hotter, denser, and less viscous than most other types of lava. It is poor in silica and rich in iron and magnesium. Eruptions involving it are typically non explosive or only mildly explosive. Many eruptions will form glowing red rivers of lava that cool to form black rock that sometimes turns red when weathered. Rhyolitic magma is cooler, less dense, and much more viscous than basaltic magma. It is rich in silica, sodium, and potassium. Because of its high gas content eruptions involving it are often highly explosive, producing huge clouds of ash and pumice rather than lava flows. Roks formed from rhyolitic magma are usually light in color.
How would volcanoes affect the climate?
Depending on the emissions, volcanoes can either cause warming or cooling. Effusive eruptions of basaltic lava tend to produce carbon dioxide, which warms the climate. Explosive eruptions of rhyolitic or dacitic ash and pumice tend to produce sulfur dioxide, which causes cooling. In both cases the eruption needs to be exceptionally large to have a noticeable effect on climate.
What type of lava flows the slowest?
Rhyolitic
What type of lava does mauna loa have felsic-rhyolitic intermediate-andesitic mafic-basaltic?
Mauna Loa exhibits non-explosive eruptions (like many in the Hawaiian islands) in the form of low viscosity (more fluid) lava due to poor silica content.
Which set of magma conditions produces the most explosive eruptions?
Magma is a hot fluid from deep within the Earth's crust. The set of magma conditions that produce the most explosive eruptions are high viscosity and the presence of dissolved gases.
