0
igneous rocks
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
What effect does a fast cooling rate have on grain size in igenous rocks?
Fast cooling lava or magma creates an aphanitic or small crystal (grain) textured igneous rock.
What is the rate of cooling in reference to magma and lava?
The rate of cooling is the speed at which magma or lava crystallizes. When the speed is slow it results in big crystals. When the speed is fast it results in small crystals.
Does fast cooling causes small grains?
Yes. Fast cooling of magma causes small crystal size or no crystal at all.
What causes holes in igneous rock?
Fast cooling lava can trap air bubbles, creating a bubbly or vesicular texture.
What 2 igneous are formed by fast cooling lava?
Rock and igneous plants
What are the igneous rocks that are formed by fast-cooling lava?
Extrusive
Is basalt cooled slowly?
In reference to the cooling of magma into rock, basalt is formed from rapid cooling.
Do obsidian rocks cool fast?
Obsidian is formed from very rapidly cooling lava.
What effect does a fast cooling rate have on grain size in igenous rocks?
Fast cooling lava or magma creates an aphanitic or small crystal (grain) textured igneous rock.
What is the rate of cooling in reference to magma and lava?
The rate of cooling is the speed at which magma or lava crystallizes. When the speed is slow it results in big crystals. When the speed is fast it results in small crystals.
Do intrusive igneous rocks form quickly or slowly?
Fast and slow are relative terms. If a heated igneous rock takes 3 hours to cool, is that fast or slow? During their formation, however, magma can solidify very slowly or very quickly. Rocks that have cooled quickly from magma are referred to as extrusive igneous rocks, such as obsidian and scoria. Rocks that have formed from slow cooling magma are called intrusive igneous rocks, such as granite and gabbro. The difference between the two types is in their grain size. Slow cooling magma produces large grained rock, and fast cooling magma produces fine-grained rock.
Smooth glassy rock that is formed when lava cools?
Obsidian
Does fast cooling causes small grains?
Yes. Fast cooling of magma causes small crystal size or no crystal at all.
What type of rock that forms from magma or lava is rock?
Igneous rock is formed from the cooling of magma or lava.
Which igneous rocks are fine grained to due to fast cooling?
Extrusive igneous rocks are fine grained due to fast cooling. They cool at a faster rate than most igneous rocks.
Does slow cooling of igneous rocks form large or small crystal grains?
Slow cooling of igneous rocks typically forms large crystal grains. This is because slow cooling allows more time for mineral grains to grow, resulting in larger crystals. Examples of rocks formed through slow cooling and having large crystal grains include granite and gabbro.
What is the main factor that affects the size of minerals in igneous rocks?
Crystal size is largely dependent on the time the magma takes to cool and solidify. Slow cooling equals large crystals. Fast cooling equals small crystals.
