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Why are the crystals in pillow basalt smaller than the crystals in basalt that forms in the ground?
Pillow basalt is formed from solidifying lava which erupts under the surface of a body of water. Because of this, it cools much faster, allowing less time for crystal growth.
Is an intrusive crystal bigger than an extrusive crystal?
Yes. Bigger crystals=Intrusive. Smaller crystals=Extrusive.
Do dykes have bigger crystals than plutons?
No.
What factor determines if an igneous rock has no crystals small crystals or large crystals?
it depends on the heat, if it cool very quick then it has small crystals but if it cool very slowly than it is bigger the slower the cooling period the bigger the crystals
What are two extrusive igneous rock that contain crystals?
Basalt and rhyolite both are extrusive igneous rock that contains mineral crystals. However, the mineral crystals are normally less than 1 mm in diameter, and are therefore not discernible without magnification.
What is basalt crystal size?
Basalt is 1mm
How does a basalt differ from gabbro?
Gabbro has much larger grains that basalt does. This is because basalt cools faster than gabbro and has less time to form crystals.
Why are the crystals in pillow basalt smaller than the crystals in basalt that forms in the ground?
Pillow basalt is formed from solidifying lava which erupts under the surface of a body of water. Because of this, it cools much faster, allowing less time for crystal growth.
Why are the crystals smaller in basalt pillows?
Pillow basalt forms underwater. Water absorbs heat from lava much more quickly than air does.
Why does Granite take much longer to form than Basalt?
hmmm, granite is intrusive, formed and cooled slowly at depth with larger individual crystals. Basalt is extrusive, fine grained (small crystals and cooled quickly. The intrusive equivalent of basalt is gabbro. For granite; rhylolite
Is an intrusive crystal bigger than an extrusive crystal?
Yes. Bigger crystals=Intrusive. Smaller crystals=Extrusive.
What rock has larger crystals than basalt and granite?
A pegmatite is a rock formed under certain favorable circumstances that enhance the crystal size of the rock. The crystals would be larger than those in basalt, an extrusive igneous rock, and granite, and intrusive igneous rock.
Do dykes have bigger crystals than plutons?
No.
What is different from crystals underground than above?
Underground crystals are bigger where as crystals formed on the surface are smaller.
What factor determines if an igneous rock has no crystals small crystals or large crystals?
it depends on the heat, if it cool very quick then it has small crystals but if it cool very slowly than it is bigger the slower the cooling period the bigger the crystals
Why are sea salt crystals bigger than table salt crystals?
The size of the grinders used by the packagers. It's not intrinsic.
What are two extrusive igneous rock that contain crystals?
Basalt and rhyolite both are extrusive igneous rock that contains mineral crystals. However, the mineral crystals are normally less than 1 mm in diameter, and are therefore not discernible without magnification.
