We are presently in an Interglacial Period. Today, glaciers cover all of Antarctica and most of Greenland. If global warming continues, the glaciers will begin to melt and causing a rise in the levels of the oceans. If the global temperature increases just three degrees by the year 2050, the sea levels will rise 8 inches from the alpine glaciers alone. Aside from the sea level rising, the global temperatures and weather patterns would also change.
Deposition is the process of eroding sediment deposited elsewhere.
Deltas areas of built up from soil dumped when a river empties into a lake or ocean. Sand bars are offshore shoals of sand deposited with slower moving water. Moraines are formed by the upward force of material in front of the glaciers. The theory of Plate Tectonic as not widely accepted until the 1970's. Submitted by Mike Bezousek on April 13, 2001.