3 Indianapolis Public Schools Substitute Teacher Salaries. Indianapolis Public Schools Substitute Teachers earn $30,000 annually, or $14 per hour, which is equal to the national average for all Substitute Teachers at $30,000 annually and 68% lower than the national salary average for âall working Americans.
Metamorphic grade is a general term for describing the relative temperature and pressure conditions under which metamorphic rocks form. As the temperature and/or pressure increases on a body of rock we say that the rock undergoes prograde metamorphism or that the grade of metamorphism increases.he original rock that has undergone metamorphism is called the protolith. Protolith can be any type of rock and sometimes the changes in texture and mineralogy are so dramatic that is difficult to distinguish what the protolith was.
Metamorphic grade refers to the temperature and pressure under which a rock was metamorphosed, considered low grade or high grade. Since metamorphic minerals in a rock form under specific conditions, they are used to identify the temperature and pressure of the metamorphic conditions. Metamorphic rock fabrics and textures