Ground moraine		a thick ice mass that forms over hundreds or thousands of years
Zone of accumulation		the most noticeable result of deflation in some places is shallow depressions called _____
Glacial erratics		streamlines asymmetrical hills composed of till
Steppe		These enourmous masses flow out in all directions from one or more centers and completly obscure all but the highest areas of underlying terrain
Aretes		second major erosional process
Blowouts		a way the wind erodes; the lifting and removal of loose material
Lateral moraines		gently rolling layer of till deposited as the ice front recedes
Rock flour		sharp, pyramid-like peaks
Glaciar		are formed when two advancing valley glaciers come together to form a single ice stream
Abrasion		deep, often spectacular, steep-sideded inlets of the sea that exist in man;y hihg-latitude areas of the world where mountians are adjacent ot the ocean
Ice shelves		Covering some uplands and plateaus are masses of glacial ice
Deflation		first major erosional process
Desert		The glacier widens, deepens, and straghtens the valley, so that what was once a narrow v shaped vally is transformed into a u shaped _____
Glacial Drift		the pulverized rock produced by the glacial " grist mill" is appropriately called _____
Desert pavement		sinuous, sharp-edged ridges
Ice sheets		steep-sided hills, like eskers, are composed largly of stratified drift
Plucking		after the ice has receded, the valleys of tributary glaciers are left standing above the main glacial trough and are termed _____
Eskers		stony veneer; may form as deflation lowers the surface by removing sand and silt from poorly sorted materials
Ephemeral streams		all embracing term for sediemnts of glacial origin, now matter how, where or in what form they were deposited
Horns		are deposits made by steams flowing in tunnels beneath the ice, near the terminus of a glacier
End moraine		snow accumulation and ice formation occur in the
Glacial Trough		when the ice at the bottom of a glacier contains large rock fragments, long scratches and grooves called ____ may be gouged into the bedrock
Kames		Along the portion of the Antarctic coast, glacial ice flows into the adjacent ocean, creating features called _____
Glacial striations		Boulders foun in the till or lying free on the surface are called _____
Hanging valleys		when glaciers waste away, these materials are left as ridges
Kettles		they carry water only in response to specific episodes of rainfall
Valley glaciers		also known as alpine glaciers
Ice caps		a ridge of till that forms at the terminus of a glacier
Medial moraines		often, end moraines, outwash plains, and vally trains are pocketmarked with basins or depressions known as _____
Drumlins		also known as arid
Fiords		also known as semi-arid