Namenda XR. Uses. Memantine is used to treat moderate to severe confusion (dementia) related to Alzheimer's disease. It does not cure Alzheimer's disease, but it may improve memory, awareness, and the ability to perform daily functions.
Where the plates meet, their relative motion determines the type of boundary: convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically ranges from zero to 100 mm annually.
The theory of plate tectonics tells us that earth's crust is broken up into plates. These plate-like sections of the earth's crust are known as tectonic plates, or lithospheric plates, and they very slowly float around on top of the hotter and more fluid asthenosphere. There are seven major tectonic plates.