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What else can I help you with?
How can you tell that scoria is an extrusive rock?
It is fine grained to glassy and contains vesicles.
Texture would be most unlikely to occur in an extrusive igneous rock?
A coarse-grained texture is unlikely to occur in an extrusive igneous rock because it forms quickly at or near the surface, limiting the time for large mineral grains to grow. Instead, extrusive igneous rocks typically have fine-grained to glassy textures due to rapid cooling.
What is a glassy fine-graind extrusive rock?
obsidian
How can determine weather an igneous rock is of intrusive or extrusive origin?
To determine whether an igneous rock is of intrusive or extrusive origin, examine its texture and mineral grain size. Intrusive igneous rocks, formed from magma cooling slowly beneath the Earth's surface, typically display larger crystals and a coarse-grained texture. In contrast, extrusive igneous rocks, formed from lava cooling quickly on the surface, usually have a fine-grained or glassy texture with smaller crystals. Additionally, the presence of volcanic features like vesicles or a glassy surface can indicate extrusive origins.
Is rhyolite fine-grained and extrusive rock?
Yes
What type of texture does extrusive rock have?
coarser grained
What type of texture does extrusive rock?
coarser grained
What characteristics are used to classify igneous rocks?
Intrusive and extrusive factors of an igneous rock classify them. The other factors are if they are vesicular, coarse, fine grained, glassy, or very coarse
What is a glassy fine graned extrusive rock?
A glassy fine-grained extrusive rock is a type of volcanic rock that forms when lava cools rapidly upon reaching the Earth's surface, preventing the formation of large crystals. This rapid cooling often results in a glassy texture, characterized by its smooth and shiny appearance. An example of such a rock is obsidian, which is primarily composed of silica and can exhibit various colors depending on its mineral content. These rocks are typically found in areas with volcanic activity.
What type of rock is formed from the quick cooling of lava on the earth's surface?
The type of rock that is formed from the quick cooling of lava on the earth's surface is called extrusive igneous rock. This happens when lava cools and solidifies rapidly, resulting in fine-grained or glassy textures found in rocks such as basalt or obsidian.
How do you identify a extrusive rock?
Extrusive rocks are typically fine-grained due to rapid cooling at or near the Earth's surface. They often have visible gas bubbles, known as vesicles, and may display a glassy texture such as obsidian. Some common types of extrusive rocks are basalt, andesite, and rhyolite.
How can we tell if a rock is extrusive or intrusive?
To determine if a rock is extrusive or intrusive, examine its texture and grain size. Extrusive rocks, formed from lava that cools quickly on the Earth's surface, typically have a fine-grained or glassy texture with small crystals. In contrast, intrusive rocks cool slowly beneath the surface, resulting in a coarse-grained texture with larger, visible crystals. Additionally, the presence of gas bubbles in extrusive rocks can further indicate their formation from volcanic activity.
