Gabbro is the product of slow cooling of mafic magma below the surface.
Basalt is formed from volcanic lava flows that cool quickly on the Earth's surface, while gabbro is formed from the slow cooling of magma deep underground. Both rocks contain similar mineral compositions, with basalt having fine-grained crystals and gabbro having coarse-grained crystals.
slowly
above
Rocks with small crystals form above ground, because when formed under ground the magma makes the rock cool slower causing more time for the crystals to grow. Above ground the rock cools faster, because the air isn't as hot under ground than above ground.
Give it a name.
Gabbro typically cools slowly beneath the Earth's surface, allowing large mineral crystals to form. This slow cooling process results in a coarse-grained texture in gabbro rocks.
Gabbro cools slowly because it forms beneath Earth's surface through the slow cooling and solidification of magma. This allows large mineral crystals to form, giving gabbro its characteristic coarse-grained texture.
understory
Gabbro cooled slowly underground, resulting in the formation of coarse-grained crystals in the rock. This slow cooling process allows large crystals to grow and develop in the molten rock.
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Gabbro forms when magma cools and solidifies beneath the Earth's surface. The exact time it takes to form gabbro can vary based on factors such as the cooling rate of the magma and the depth at which it solidifies, but it generally ranges from thousands to millions of years.
No. Molten rock under the surface is called magma. Molten rock above the surface is referred to as lava.