What are igneous rocks? Geological Survey -

What are igneous rocks? Geological Survey - igneous rock Andesite Andesite is an extrusive igneous rock that is higher in silica than basalt and lower than rhyolite or felsite Click the photo to see wwwtherock88com The meaning of IGNEOUS ROCK is rock formed by solidification of a molten magma

wwwtherock88com หินที่เกิดจากการเย็นตัวและตกผลึกของหินหนืด โดยสามารถจำแนกหินอัคนีตามการกำเนิดหินออกเป็น 2 ประเภทหลัก ได้แก่ Intrusive Rock or Plutonic Rock

rocket raccoon 1 Fig : Intrusive igneous rocks form at some depth within the crust due to slow cooling of magma, resulting in formation of large crystals Individual Extrusive igneous rocks Extrusive igneous rocks are formed at the Earth's surface as a result of the partial melting of rocks within the mantle and crust The