1 doctor agreed: 1  Chest pain...: This could be a musculoskeletal pain that happens after a workout or a sudden movement . If this is associated with a cough, shortness of breath or fever, i would recommend having a chest xray to exclude some lung diseases like pneumonia, pleural effusion...Etc. ...Read more.
Metamorphic Rocks are rocks that have changed form due to heat and pressure. Metamorphic comes from the Greek words meta and morph. Meta means change and morph means form. So we get metamorphic meaning to change form. Metamorphic rocks were once sedimentary, igneous or even other metamorphic rocks that have been changed by heat and pressure. There are three kinds of metamorphism.
The 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. zNote that diagenesis and weathering are also a changes in form that occur in rocks.