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Basalt is a type of volcanic erock. It forms when lava that is low in silica and rich in iron and magnesium cools and hardens at or above Earth's surface, most often in the form of lava flows.
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∙ 9y ago
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∙ 8y agoBasalt lava flows occur when magma with a low silica content erupts on the surface. The low silica content means this basaltic lava is less viscous than other types of lava. Therefore it flows fairly easily across the surface.
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∙ 13y agoBasalt is formed by the rapid cooling and crystallization of mafic magma or lava.
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∙ 12y agopahoehoe flows
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How thick is basalt?
Basalt is a rock formed from rapid cooling of lava or magma. The thickness of basalt depends on how much lava is present during cooling. Basalt can be anywhere from a few centimeters thick to many tens of meters thick.
How could you tell if a volcano makes felsite or basalt lava?
Thin lava
How does pillow basalt form?
Pillow basalt is formed when lava extrudes from the ocean floor - perhaps into a sediment overburden (?) - such that each bolus of lava is separate from the others.
Is Scoria rock igneous?
Yes,Scoria (a type of Basalt) Basalt is a dark-colored rock that formed as lava cooled and hardened. Scoria is a type of basalt that's full of bubble holes. The bubbles formed as the lava was blasted out of a volcano, and were trapped as the lava cooled and hardened.
What rock is a obsidian and basalt?
Obsidian and Basalt are both Igneous rocks. They are made from hardened lava from volcanoes.
How would you connect the words lava and basalt?
Most lava forms a rock called basalt when it cools.
What kind of lava comes from Mt Fuji?
basalt lava
What is the lava of surtsey?
the magma and lava in Surtsey are of alkali olivine basalt, which is the type of basalt found in Vestmannaeyjar (Westman Islands)
What is the meaning ofBASALTIC?
Pertaining to basalt; formed of, or containing, basalt; as basaltic lava.
How thick is basalt?
Basalt is a rock formed from rapid cooling of lava or magma. The thickness of basalt depends on how much lava is present during cooling. Basalt can be anywhere from a few centimeters thick to many tens of meters thick.
What makes basalt?
cooling lava from volcanoes.
How could you tell if a volcano makes felsite or basalt lava?
Thin lava
Is Basalt intrusive or extrusive?
extrusive it forms when lava from a volcanic eruption cools on the surface.
Where is basalt born?
Basalt is formed when low-silica lava erupts from a volcano and later cools.
Is basalt igneous sedimentary metamorphic?
Basalt is an igneous rock . . . it is pretty much hardened lava.
How does pillow basalt form?
Pillow basalt is formed when lava extrudes from the ocean floor - perhaps into a sediment overburden (?) - such that each bolus of lava is separate from the others.
Where would you expect to find lava solidifying into basalt?
You would expect to find lava solidifying into basalt on the flanks of a volcano, most likely a shield volcano.
