when the lava cools quickley it is fine-grained
A fine grained igneous rock forms from Lava that escapes from the earth crust to the surface and cools and solidifies rapidly.
Yes. Exactly, they do have both, fine grained and coarse grained rocks.
A fine-grained igneous rock would likely weather faster than a coarse-grained igneous rock. This is because the smaller grains in a fine-grained rock provide more surface area for weathering processes to act upon, leading to quicker breakdown and erosion.
Well that will be intrusive igneous rocks, extrusive forms inside the earths crust
A peridotite is a dense, coarse-grained igneous rock
*fine-grained *coarse-grained
Two examples of fine-grained igneous rocks are basalt and rhyolite. Basalt is a dark-colored rock with a composition rich in iron and magnesium, while rhyolite is light-colored and has a high silica content. Both rocks form from the cooling and solidification of molten magma.
Fine-grained igneous rocks are formed when magma cools quickly at or near the Earth's surface, resulting in rapid crystal formation. This rapid cooling prevents large mineral crystals from forming, giving the rock its fine-grained texture. Examples of fine-grained igneous rocks include basalt and rhyolite.
Methods of formation. If crystalline (igneous or metamorphic) they would most likely have had differing rates of cooling. If sedimentary, they would most likely have had differing depositional environments (higher energy for larger grain sizes).
Basalt
It is an igneous (volcanic rock).
A fine-grained igneous rock forms from magma cooling quickly at or near the surface of the Earth. This rapid cooling prevents large mineral crystals from forming, resulting in a fine-grained texture with small mineral grains. Examples of fine-grained igneous rocks include basalt and rhyolite.