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Basaltic lava flows form from mafic magmas located blow the earth's surface. These lava flows, when crystallized, will produce rhyolite and dacite. Intermediate compositions-- that is, a mixture of felsic and more of mafic magmas-- will produce andesitic rock. Types: Tholeiitic basalt: poor in silica, poor in sodium. Found mostly in the ocean floor, large oceanic islands, and places such as the Columbia River Plateau. High Alumina basalt: silica-undersaturated or over-saturated. It's relative richness in aluminum is based on rocks without phenocrysts of plagioclase. Alkali basalt: poor in silica, rich in sodium. May contain alkali feldspar, phlogopite, and/or feldspathoids.
Boninite: high-magnesium form of basalt (or andesite) that is found usually at places where subduction zones/island arcs are forming.
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What are the three types of lava flows associated with basaltic lava?
basaltic lava can form a'a, pahoehoe, or pillow lava.
Does basilic lava have low silica?
Yes, basaltic lava has low silica content compared to other types of lava. Basaltic lava is typically rich in iron, magnesium, and calcium, which contribute to its low silica content. This low silica content also makes basaltic lava less viscous and more likely to flow easily.
What type of lava comes from what volcano?
Shield volcanoes will erupt basaltic lava. Cinder cones erupt basaltic lava or basaltic andesite lava. Stratovolcanoes often erupt andesite lava, but may erupt basaltic or rhyolitic lava and all intermediate types as well.
Is lava butte basaltic or granitic lava flow?
A lava butte is generally basaltic lava. Granitic lava flows (called rhyolitic when they form at the surface) are rare and do not cover much ground.
What are gentle slopes of basaltic lava flow?
Gentle slopes of basaltic lava flow refer to the gradual incline created by the movement of low-viscosity basaltic lava. These lava flows can extend over long distances and form smooth, undulating terrain due to their ability to spread out easily and flow for extensive distances before solidifying. This results in a characteristic gentle slope that is distinctive to basaltic lava flows.
What are three different types of lava?
Basaltic, andesitic and rhyolitic
Does basaltic or rhyolitic lava flow faster?
Basaltic lava flows much faster than ryholitic lava.
What are the three types of lava flows associated with basaltic lava?
basaltic lava can form a'a, pahoehoe, or pillow lava.
Does basilic lava have low silica?
Yes, basaltic lava has low silica content compared to other types of lava. Basaltic lava is typically rich in iron, magnesium, and calcium, which contribute to its low silica content. This low silica content also makes basaltic lava less viscous and more likely to flow easily.
What type of lava comes from what volcano?
Shield volcanoes will erupt basaltic lava. Cinder cones erupt basaltic lava or basaltic andesite lava. Stratovolcanoes often erupt andesite lava, but may erupt basaltic or rhyolitic lava and all intermediate types as well.
Is lava butte basaltic or granitic lava flow?
A lava butte is generally basaltic lava. Granitic lava flows (called rhyolitic when they form at the surface) are rare and do not cover much ground.
What are gentle slopes of basaltic lava flow?
Gentle slopes of basaltic lava flow refer to the gradual incline created by the movement of low-viscosity basaltic lava. These lava flows can extend over long distances and form smooth, undulating terrain due to their ability to spread out easily and flow for extensive distances before solidifying. This results in a characteristic gentle slope that is distinctive to basaltic lava flows.
What type of basaltic lava flow has a fairly smooth unfragmented ropy surface?
Pahoehoe lava flows exhibit a fairly smooth, unfragmented, and ropy surface. This type of basaltic lava flow has a characteristic appearance due to its low viscosity, which allows it to flow and solidify in a smooth manner.
Does basalt or rhyolite flow faster?
Basaltic lava flows much faster than ryholitic lava.
Which type of lava-basaltic lava or rhyolitic lava flows faster and why?
Basaltic flows much faster than rhyolite. Rhyolite is higher viscosity. Find a video of a basaltic lava flow like Hawaii, it flows like water when it's hot. Rhyolite eruptions usually act more like toothpaste if they're slow, or an explosion if fast.
Why are there different types volcanoes?
there are different types of volcanoes for different reasons. how they form has alot to do with the type of lava said volcano produces. fluid basaltic lava tends to create shield volcanoes. spatter cones tend to form when hot erupting lava contains just enough explosive gas to prevent the formation of a lava flow, but not enough to shatter it into small fragments. hot expanding gas tears the lava into hot fluid clots.
Is it basic lava or basaltic lava?
It's basaltic lava, not basic.
