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Which characteristic provides the best evidence that obsidian rock formed in an extrusive environment?
The glassy texture of obsidian is the best evidence that it formed in an extrusive environment. Obsidian is rapidly cooled lava with no time for crystal growth, resulting in a smooth, glass-like texture.
Where is each type of igneous rock formed?
The Extrusive igneous rock is formed on the earths surface while the Intrusive igneous rock is formed within or inside the earths crust.
Is coal an extrusive igneous rock?
Coal is not a intrusive igneous rock but is instead a form of Carbon. The carbon is heated and pressured from low grade metamorphism. Coal is formed mostly from marshes or swamps millions of years ago, think of an environment like the everglades in Florida. A igneous rock would be something like a gabbro or granite.
What is formed from the crystallization of magma?
When magma cools and solidifies, it forms igneous rocks such as granite, basalt, or obsidian. The specific type of rock that forms depends on variables such as the composition of the magma, cooling rate, and environment in which it solidifies.
What type of rock is formed when lava flowing from a volcano cools and hardens?
Igneous rock, specifically extrusive or volcanic rock, is formed when lava cools and hardens. This type of rock typically has small crystals due to the rapid cooling process and examples include basalt and rhyolite.
What provides the best evidence of the environment in which an igneous rock formed?
texture
What is Best evidence of the environment in which an igneous rock was formed?
Texture
What provides the best evidence of the environments in which an igneous rock was formed?
texture
What provides the best evidence of the environment in which an igneous rock was formed?
The mineral composition and texture of an igneous rock provide the best evidence of the environment in which it was formed. The type of minerals present, their sizes, and how they are arranged can give clues about the temperature and pressure conditions during its formation. Additionally, the presence of specific features like vesicles, crystals, or layering can also indicate the rock's formation environment.
Which characteristic provides the best evidence about the environment in which a rock was formed?
Mineral composition is a key characteristic that provides evidence about the environment in which a rock was formed. Different minerals form under specific temperature, pressure, and chemical conditions, offering valuable clues about the geological processes that shaped the rock.
The radiometric dating of an igneous rock provides .?
the date for which the rock formed
Which characteristic provides the best evidence that obsidian rock formed in an extrusive environment?
The glassy texture of obsidian is the best evidence that it formed in an extrusive environment. Obsidian is rapidly cooled lava with no time for crystal growth, resulting in a smooth, glass-like texture.
What characteristic provides the best evidence that obsidian rock formed in an extructive environment?
The characteristic that provides the best evidence that obsidian rock formed in an extrusive environment is its glassy texture. This texture indicates rapid cooling of molten lava, preventing the formation of large crystals. Additionally, the presence of gas bubbles or vesicles can further suggest that the lava cooled quickly upon exposure to the surface environment.
Type of rock formed from molten rock?
Igneous rock is formed when magma cools and becomes solid.
What is igneous rock formed from magma?
An igneous rock formed from magma is intrusive.
What describes rock that was formed when molten rock cooled down?
Igneous rock is formed.
What does igneous rock made of?
Igneous rocks are formed when lava cools. After a eruption, the lava cools, and the igneous rock is formed.
