Obsidian
Igneous rock.(obsidian)
Igneous rock is a result of cooled lava or magma.
No, not all igneous rock is formed from lava that cooled on Earth's surface. Some igneous rocks are formed from magma that cooled below the surface, and these are called intrusive igneous rocks. These rocks cool more slowly than lava, allowing for larger mineral crystals to form.
When lava cools and solidifies, it is called igneous rock. The specific type of igneous rock formed depends on the composition of the lava and the cooling process. For example, basalt is formed from rapidly cooled lava, while granite is formed from slowly cooled magma beneath the Earth's surface.
Granite is formed from molten rock that has cooled. Since it forms underground, however, the molten rock that it forms from is called magma rather than lava.
Igneous rock is formed from solidified and cooled magma or lava.
Igneous rock.(obsidian)
Igneous rock is formed from lava that has cooled and, of course, hardened.
Cooled lava produces extrusive igneous rock.
Obsidian is a beautiful rock. It's description is pretty simple, it is a rock that formed out of cooled lava, and is black in color.
pumice
Igneous rock is a result of cooled lava or magma.
it is lava and when lava cools it forms igneous rock
No, not all igneous rock is formed from lava that cooled on Earth's surface. Some igneous rocks are formed from magma that cooled below the surface, and these are called intrusive igneous rocks. These rocks cool more slowly than lava, allowing for larger mineral crystals to form.
obsidian
When lava cools and solidifies, it is called igneous rock. The specific type of igneous rock formed depends on the composition of the lava and the cooling process. For example, basalt is formed from rapidly cooled lava, while granite is formed from slowly cooled magma beneath the Earth's surface.
Granite is formed from molten rock that has cooled. Since it forms underground, however, the molten rock that it forms from is called magma rather than lava.