Volcanoes, including Mount Rainier, will aways erupt igneous rock.
A sedimentary rock is made from the products of the erosion of other rocks. These could be igneous, sedimentary or metamorphic rocks. If you wish to know the original rock from which sedimentary and metamorphic rocks came from, you have to go back to when the Earth formed. In this case, the answer would be an igneous rock.
Basically a bunch of rocks come together( are pressed together by heat and pressure) in a process called Lithification , those rocks can be either Sedimentary or Igneous rocks.
Magma
Igneous rocks, which come in many different forms.
A sedimentary rock changes into a metamorphic rock when there is heat, pressure, and time. -over a long period of time
Igneous, sedimentaty and metamorphic are all types of rocks. You would just write sentences to describe each, like "Igneous rocks come from volcanoes" and "Sedimentary rocks come from sediment."
Sediments come from the erosion of igneous, sedimentary, and metamorphic rocks.
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The main type of energy used to help convert metamorphic rocks into igneous rocks is heat. This heat can come from processes such as magma intrusion, volcanic activity, or tectonic movements, causing the metamorphic rocks to melt and recrystallize into igneous rocks.
Igneous rocks are formed when rocks reach the melting point becoming magma, then the magma starts to cool and crystallizes to form igneous rocks. Metamorphic rocks are made when they come in contact with a mass of magma but does not melt providing the energy to drive chemical reactions that recrystallize minerals.
Rocks are grouped by how they are formed. There are 3 types of rocks. Sedimentary, Metamorphic, and Igneous rock. Sedimentary rocks are made from broken down rocks, called sediment, which come from all three rocks. Metamorphic rocks come from existing rocks that are changed by heat and pressure. The Igneous rocks are formed from magma that rose up to the surface, also known as lava. When the lava cools and hardens it forms igneous rocks. That is a rock cycle. Rocks are grouped by how they are formed. There are 3 types of rocks. Sedimentary, Metamorphic, and Igneous rock. Sedimentary rocks are made from broken down rocks, called sediment, which come from all three rocks. Metamorphic rocks come from existing rocks that are changed by heat and pressure. The Igneous rocks are formed from magma that rose up to the surface, also known as lava. When the lava cools and hardens it forms igneous rocks. That is a rock cycle.
Answering "What process changes igneous rocks into metamorphic types?"Igneous rocks convert into metamorphic due to extreme pressure and heat, which can come from magma/lava or the movement of tectonic plates. For example, the igneous rock basalt eventually turns into the metamorphic rock granulite.
When metamorphic rock is deposited deep down in the earth, due to pressure and heat, it could be turned easily to lava. When this lava gets heated up the more, due to convection of heat it is force to come out. It cools off on the earth surface as igneous rock.
Igneous Rocks are formed. Obsidian is a volcanic glass, go to wikepidiea and search "list of rocks" and it will come up with all the different igneous, metamorphic, and sedimentary rocks and what they are.
Sedimentary rocks are formed when other rocks (igneous, metamorphic, or sedimentary) are weathered and eroded and their sediments are compacted and cemented together. Metamorphic rocks can be formed when heat and pressure is applied to any type of existing rock. Igneous rocks are formed when magma cools. The magma can be made up of melted rocks of any kind (sedimentary, igneous, or metamorphic). The cycle repeats itself all the time and all of the rocks can come from any other kind of rock.
metamorphic rocks become molten when over millions of years of compaction they come in contact with the magma which melts the rock and if near a volcano the volcano will remove it forming a igneous rock when cool
Rocks formed from high temperature and pressure include metamorphic rocks such as marble, schist, and gneiss. These rocks are created deep within the Earth's crust through the transformation of existing rock types under intense heat and pressure conditions.