Obsidian
Smooth glassy lava is called obsidian. It forms when lava cools quickly, preventing crystals from forming, resulting in a glassy texture. Obsidian is typically black in color but can also appear in various shades of brown, green, or red.
Obsidian is formed from very rapidly cooling lava.
Obsidian is a type of volcanic rock that is extremely vesicular and glassy in appearance. It forms when lava cools quickly with minimal crystal growth, resulting in a smooth texture and shiny appearance.
Extrusive igneous rock is formed from the crystallization of minerals as the lava cools.
The smooth and shiny lava is called pahoehoe.
Smooth glassy lava is called obsidian. It forms when lava cools quickly, preventing crystals from forming, resulting in a glassy texture. Obsidian is typically black in color but can also appear in various shades of brown, green, or red.
Obsidian is an igneous rock that has a smooth glass-like texture. It is formed when lava cools rapidly without crystal formation, resulting in a glassy texture.
glassy texture
Obsidian is formed when lava cools very quickly, typically within a few hours, preventing crystallization. This rapid cooling prevents mineral crystals from forming, resulting in a smooth, glassy texture.
Obsidian is formed from very rapidly cooling lava.
Obsidian is formed when lava cools quickly on the Earth's surface, usually within a few days. The rapid cooling prevents the growth of crystals, resulting in a smooth and glassy texture. Obsidian is typically found near volcanic areas where lava flow has occurred.
The resulting texture is called glassy. This texture forms when lava cools so quickly that no crystals have time to grow, resulting in a smooth, glass-like appearance.
Obsidian is a type of volcanic rock that is extremely vesicular and glassy in appearance. It forms when lava cools quickly with minimal crystal growth, resulting in a smooth texture and shiny appearance.
The rock you are describing is likely obsidian. Obsidian is a naturally occurring volcanic glass formed during rapid cooling of lava. It is usually black in color and has a smooth, glassy texture.
Igneous rocks are formed when lava cools. After a eruption, the lava cools, and the igneous rock is formed.
Yes that is why it makes that glassy look to it.
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.