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
Sort Of Sort Of Sort Of is the debut studio album by the avant-rock band Slapp Happy. It was recorded in Wümme, Germany in May and June 1972 with Faust as their backing band, and released on LP by Polydor Records in 1972. In 1980 Recommended Records released a limited edition of "Sort Of" on LP, and the album was reissued on CD by Blueprint Records in 1999 with one bonus track. All titles written by Peter Blegvad and Anthony Moore. "Sort Of" was released on CD by Blueprint Records in 1999 with an extra track (from the B-side of their single