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. Metamorphic rocks are other rocks (igneous and sedimentary) that have undergone high amount of pressure and temperature deep within the Earth. Metamorphism is the result of solidification of material under high temperature and pressure. There are two types of metamorphism, contact and regional.