i need help with my assignment,indetify a range of metamorphic rocks and state the parent rock of each
Examples of Common Metamorphic Rocks: Quartzite is a coarse-grained metamorphic rock that comes from sandstone. Marble is a metamorphic rock that comes from metamorphosed limestone or dolomite. Slate is a fined grained metamorphic rock. It is made up of clay minerals primarily shale Phyllite is a fined grained metamorphic rock, also made from clay minerals. Shale can form phyllite as well. Schist is a course grained metamorphic rock that can also be formed by shale. Gneiss is a medium to course grained metamorphic rock, again formed by shale. Granite, can also make up the parent rock for gneiss. Now, slate, phyllite, schist and gneiss are all metamorphosed from shale. Different rocks can form depending on the degree of heat and pressure. Slate requires the least amount of heat followed by phyllite, schist and gneiss.
why not go to the library?
Certain exhaust systems will improve your horsepower and at the same time slightly increase your fuel mileage.
Metamorphic rock is the result of the transformation of an existing rock type, the protolith, in a process called metamorphism, which means change in form. The protolith is subjected to heat and pressure (temperatures greater than 150 to 200 °C and pressures of 1500 bars[1]) causing profound physical and/or chemical change. The protolith may be sedimentary rock, igneous rock or another older metamorphic rock. Metamorphic rocks make up a large part of the Earth's crust and are classified by texture and by chemical and mineral assemblage (metamorphic facies). They may be formed simply by being deep beneath the Earth's surface, subjected to high temperatures and the great pressure of the rock layers above it. They can be formed by tectonic processes such as continental collisions which cause horizontal pressure, friction and distortion. They are also formed when rock is heated up by the intrusion of hot molten rock called magma from the Earth's interior. The study of metamorphic rocks (now exposed at the Earth's surface following erosion and uplift) provides us with very valuable information about the temperatures and pressures that occur at great depths within the Earth's crust.
