Vesicles are rounded spaces that appear in igneous rocks from the solidification of the magma around gas bubbles. Pumice, scoria, and vesicular basalt are igneous rocks that contain vesicles.
The term is vesicles. These are small cavities or voids in igneous rocks formed by gas bubbles escaping as the magma cools and solidifies.
Vesicular rocks contain lots of small cavities, usually filled with air. Non- vesicular ones don't have these holes. Vesicles are formed when magma suddenly rushes out on to the surface and its dissolved gases come out of solution, blowing bubbles in the liquid rock which are preserved as it cools quickly and sets. An example of a vesicular rock is pumice.
A vesicular texture is one where there are small voids within the igneous rock. These tend to form in extrusive igneous rocks due to the loss of confining pressure which causes gasses dissolved in the molten material to come out of solution or exsolve. These gasses form bubbles within the cooling lava and can become trapped if the lava cools rapidly, leaving a permanent gas bubble or void space within the solidified igneous rock.
Rhyolite is a rock type that is categorized by mineral composition. Scoria is a textural rock type. Like, Rhyolite can be smooth, or it can be scoria (sharper, bumpier, lots of vesicles).Think of it as a rock adjective.
An intrusive igneous rock.
The term is vesicles. These are small cavities or voids in igneous rocks formed by gas bubbles escaping as the magma cools and solidifies.
An igneous rock can contain small holes called vesicles, which are formed by gas bubbles trapped in the rock during its cooling process. These vesicles can vary in size and density depending on the type of igneous rock and the amount of gas released during solidification.
Vesicular rocks contain lots of small cavities, usually filled with air. Non- vesicular ones don't have these holes. Vesicles are formed when magma suddenly rushes out on to the surface and its dissolved gases come out of solution, blowing bubbles in the liquid rock which are preserved as it cools quickly and sets. An example of a vesicular rock is pumice.
Extrusive igneous rock is formed from rapidly cooling lava.
A vesicular texture is one where there are small voids within the igneous rock. These tend to form in extrusive igneous rocks due to the loss of confining pressure which causes gasses dissolved in the molten material to come out of solution or exsolve. These gasses form bubbles within the cooling lava and can become trapped if the lava cools rapidly, leaving a permanent gas bubble or void space within the solidified igneous rock.
* Vesicular rock texture is generally displayed in extrusive igneous rocks which contain many vesicles of trapped air, such as pumice or scoria. * Igneous rocks containing holes which were produced as gases escaped from the upper part of lava flow.
Igneous rock is formed.
Rhyolite is a rock type that is categorized by mineral composition. Scoria is a textural rock type. Like, Rhyolite can be smooth, or it can be scoria (sharper, bumpier, lots of vesicles).Think of it as a rock adjective.
Obsidian is an igneous rock.
Igneous rock is formed when magma cools and becomes solid.
Cooling and solidifying magma turns into igneous rock.
Extrusive igneous rock such as basalt, rhyolite, pumice, and obsidian.