The blood pressure decreases and complaints, such as fatigue and lassitude, make themselves felt. These symptoms may also occur after the meal because the blood gathers in the area of the digestive organs and is missing in the brain. Dizziness.
Metamorphic rocks have been modified by heat, pressure and chemical processes, usually while buried deep below Earth's surface. Exposure to these extreme conditions has altered the mineralogy, texture and chemical composition of the rocks. There are two basic types of metamorphic rocks. Foliated metamorphic rocks such as gneiss, phyllite, schist, and slate have a layered or banded appearance that is produced by exposure to heat and directed pressure.
Marble is another example of a metamorphic rock. It is formed from limestone. Metamorphic rocks sometimes contain fossils if they were formed from a sedimentary rock, but the fossils are usually squashed out of shape. Metamorphic rocks can be formed from any other type of rock-sedimentary or igneous.Remember these two examples of common metamorhpic rocks and where they come from:slate is formed from shale. marble is formed from limestone. 1  Page. 2  1. 3  2. 4  3. 5  4. 6  5.etamorphic rocks can be formed from any other type of rock-sedimentary or igneous. Remember these two examples of common metamorhpic rocks and where they come from: slate is formed from shale. marble is formed from limestone. 1  Page. 2  1. 3  2.