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.
Non-foliated metamorphic rocks such as hornfels, marble, quartzite, and novaculite do not have a layered or banded appearance. Pictures and brief descriptions of some common types of metamorphic rocks are shown on this page. Hornfels is a fine-grained nonfoliated metamorphic rock with no specific composition.
Metamorphic rocks were originally igneous or sedimentary, but due to movement of the earth's crust, were changed. Metamorphic rocks are rocks that have been transformed by great heat or pressure. Marble is an example of a sedimentary rock that has been changed into a metamorphic rock. If you squeeze your hands together very hard, you will feel heat and pressure.