Why Does Granite Have Bigger Crystals Than Basalt

Yes because granite is a slow cooling rock therefore the crystals have a lot of time to form while basalt is a fast cooling rock therefore thecrystals don t have much time to form and develop.

Why does granite have bigger crystals than basalt.

Why does granite have a lower melting point than basalt. This slow cooling gives time for crystals to grow making it more coarsely grained than an extrusive rock. This coarse grain makes granite a favorite of rock climbers. What s the most obvious difference between basalt and gabbro.

Like gabbro granite and diorite basalt is an igneous rock and is also the most abundant bedrock on earth including under the surface and within ocean basins. Obsidian and granite are igneous rocks so called because they were formed from the molten magma of volcanoes. Crystals have more time to grow to larger size. Yes because granite is a slow cooling rock therefore the crystals have a lot of time to form while basalt is a fast cooling rock therefore thecrystals don t have much time to form and develop.

The crystals in granite being intrusive in nature will be larger than those in basalt an extrusive igneous rock. It depends on the type of igneous rock. If magma cools quickly for example when basalt lava erupts from a volcano then many crystals form very quickly and the resulting rock is fine grained with crystals usually less than 1mm in size. Intrusive igneous rocks have cooled slowly from magma extrusive rocks have.

Beyond that their similarities end. Intrusive igneous rocks such as granite have large crystals extrusive igneous rocks may have small crystals as in basalt or no crystals as in pumice. Basalt on the other hand has a smooth texture from rapid cooling usually by water. Intrusive igneous rocks have cooled slowly from magma extrusive rocks have.

The crystals in granite being intrusive in nature will be larger than those in basalt an extrusive igneous rock. Granite is an intrusive rock that is formed when magma cools inside the crust.