Metamorphic rock the foliation is called "gneissosity"), granoblastic (includes granulite, some marbles and quartzite), and hornfelsic (includes hornfels and skarn). 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
The Heat Is On (album) release history of "The Heat Is On" was adapted from Discogs. Bibliography The Heat Is On (album) The Heat Is On is the thirteenth studio album by American soul and funk group The Isley Brothers, released June 7, 1975 on T-Neck Records and Epic Records. Written and produced entirely by the group, the album was recorded in 1975 at Kendum Recorders in Burbank, California. The group implemented many acoustic and electric instruments during its recording, including guitar, piano, and synthesizer. Primarily a funk and soul outing, "The Heat Is On" features musical elements of rock music, and it is divided