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i dont know thats why i am asking you do you know
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∙ 12y ago
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How does obsidian get its unusual texture?
The texture of a rock depends on the rate that it cools. Obsidian cools so quickly that no crystals can form, therefore giving it a glassy texture.
What igneous rock cools from lava?
obsidian
How is obsidian glass made?
Obsidian, or "volcanic glass," is made when molten rock comes out of a volcano and cools so quickly that no crystalline structure has time to form. This makes obsidian an extrusive igneous rock. The cooling occurs right at the surface.
Is obsidian a sedimentary rock igneous rock or a metamorphic rock?
obsidian is an igneous rock, it is not formed from sediment, or a rock going under heat and pressure for the second time it is formed when a volcano erupts and it cools very quickly giving it a smooth glossy surface like glass.
What type of rock froms when lava cools very quickly?
Volcanic rocks like obsidian is formed when lava undergoes very rapid cooling.
What is the obsidian rock type?
Obsidian is an extrusive felsic igneous rock.
When lava cools very quickly it sometimes turn into a glassey rock called?
As lava cools once exposed to air or water, there may be no time for crystal formation, and it produces an almost glass like substance called obsidian. Obsidian is prized as a gemstone and in jewelry making.
How can you tell obsidian is an igneous rock?
Obsidian is a form of glass. Glass can only form when material cools from a molten state.
What is the major process of surface rock formation on volcanoes?
rock cools quickly from melted rockRock cools quickly from melted rock.
Is obsidian a metamorphic rock?
Obsidian is an igneous rock.So the answer is YES.
What is the parent rock of obsidian?
the parent rock of obsidian is magma, because it is made from quickly-cooling magma after a volcanic eruption.
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.
