ice shelf - n. a floating sheet of ice attached to a landmass.
offshore - n. moving away from the shore toward the water
recipe - n. a way of doing something that will produce a particular result
glacier - n. a very large area of ice that moves slowly down a slope or valley or over a wide area of land
glaciologist - n. a person who studies glaciers
ice cap - n. a covering of ice over a large area, especially on the polar area of a planet.
bedrock - n. the solid rock that lies under the surface of the ground