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extrusive ingeneous rocks
Extrusive, Igneous rocks possibly lavas or ignimbrites.
When lava cools, it forms what is known as an extrusive igneous rock. Volcanoes are also associated with alteration from heat and fluids. Therefore you would expect to find extrusive rocks as well as altered rocks.
extrusive igneous rock
You would find extrusive igneous rocks. Beyond that it depends on the volcano.
Lava slowly flowing out of a fracture in the Earth's surface :)
extrusive ingeneous rocks
Extrusive, Igneous rocks possibly lavas or ignimbrites.
When lava cools, it forms what is known as an extrusive igneous rock. Volcanoes are also associated with alteration from heat and fluids. Therefore you would expect to find extrusive rocks as well as altered rocks.
Slow cooling in the upper mantle
Slow cooling in the upper mantle
Slow cooling in the upper mantle
You would find extrusive igneous rocks. Beyond that it depends on the volcano.
extrusive igneous rock
You would find extrusive igneous rocks. Beyond that it depends on the volcano.
Because as an intrusive rock cools underground, it will normally cool more slowly than an extrusive (surface) rock. The slow cooling allows more time for the crystals to grow.
Because intrusive rocks cool more slowly which makes the rocks larger.