GENERAL GEOLOGY

Detailed explanation-1: -Contact Metamorphism occurs when magma comes in contact with an already existing body of rock. When this happens the existing rocks temperature rises and also becomes infiltrated with fluid from the magma. The area affected by the contact of magma is usually small, from 1 to 10 kilometers.

Detailed explanation-2: -Contact metamorphism. This is metamorphism produced by intrusion of magma. Heat and fluids from the crystallizing magma cause chemical and mineralogical changes in the rocks being intruded.

Detailed explanation-3: -No matter how much pressure you apply, the grains will not align! Another type of metamorphism, contact metamorphism, occurs when hot igneous rock intrudes into some pre-existing rock. The pre-existing rock is essentially baked by the heat, changing the mineral structure of the rock without addition of pressure.

Detailed explanation-4: -Nonfoliated rocks can also form by metamorphism, which happens when magma comes in contact with the surrounding rock. Igneous rocks (derived from the Latin word for fire) are formed when molten hot material cools and solidifies. Igneous rocks can also be made a couple of different ways.