Metamorphic rock Metamorphic rock Metamorphic rocks arise from the transformation of existing rock types, in a process called metamorphism, which means "change in form". The original rock (protolith) is subjected to heat (temperatures greater than 150 to 200 °C) and pressure ( or more), causing profound physical or chemical change. The protolith may be a sedimentary, igneous, or existing metamorphic rock. Metamorphic rocks make up a large part of the Earth's crust and form 12% of the Earth's land surface. They are classified by texture and by chemical and mineral assemblage (metamorphic facies). They may be formed simply by being deep beneath
Heat transfer vinyl is available anywhere from small sheets, to large "master" rolls, that can be up to 60" x 50 yards. Typical sizes are 15" and 19" wide rolls in 1 yard, 5 yard, 10 yard, 25 yard, and 50-yard lengths. Heat transfer vinyl is used on products like shirts, hats, koozies, tote bags, jerseys, and headbands. Heat transfer vinyl must be used on products that can take the heat and pressure necessary to transfer the vinyl onto the substrate. Each heat transfer vinyl manufacturer will list what products can be used for each type of vinyl. Fabrics such as cotton, cotton/polyester