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.
Metamorphism must occur below the surface since it occurs as the result of a rock âadjustingâ to heat and pressure. For this reason there is no âintrusive/extrusiveâ distinction required. Some examples of metamorphic rocks are meta-quartzite, gneiss, and schist.