Parameter Tree:
EARTH SCIENCE > CRYOSPHERE > GLACIERS/ICE SHEETS > ICE SHEETS

Definition:
A continuous sheet of land ice that covers a very large area and moves outward
in many directions.
This type of ice mass is so thick as to mask the land surface contours, in
contrast to the smaller and thinner highland ice. The continental glacier of
Greenland is sometimes called the Inland Ice. This term is often used to
describe the great ice masses that characterized the ice ages.


Reference:
American Meteorological Society Glossary of Meteorology.
http://amsglossary.allenpress.com/glossary/