Thick ice mass formed by the accumulation, compaction and recrystallization of snow
alpine or valley
Type of glacier formed in mountain areas
Type of glacier that spreads out over flatter land at base of mountains
Large bodies of ice that form on continents and grow outward in all directions
Action of ice that is at the bottom of glacier under pressure
Cracks formed in the top 150 feet of glacier.
abrasion and plucking
How glaciers erode surfaces
Form of erosion where ice at the bottom of a glacier picks up sediment, using the same process as ice wedging.
Form of erosion where sediment carried along the bottom of a glacier acts like sandpaper that smooths surfaces
Erosional feature left after a glacier recedes
Bowl-like depression formed by frost wedging and plucking steep cliffs at edges.
sharp edged ridges formed between two troughs
sharp pyramid shaped peaks formed between more than two troughs
Tributary troughs which are higher in elevation than the main trough
submerged glacial trough that formed when sea level was lower. Also called arm of the sea
All sediments deposited by a glacier, containing sediment of all sizes
mixed sediments deposited by a glacier
layers or ridges of till or drift formed along the edges of glaciers, where two glaciers meet or end
changes in the earth's orbit that create glacial-interglacial periods
Percentage of the earths surface under desert
arid regions covering approximately 30% of the earth's surface
Streams that only run when there is precipitation and then dry up quickly
Main weathering and erosion agent in the desert
temporary lakes in deserts where ephemeral streams collect and end, containing sizable deposits of evaporates
mountain peaks buried in sediment
Process that removes fine materials from the soil surface, leaving coarser materials behind, causing the whole surface to drop lower and become coarser over time.
Coarse veneer of pebbles and gravel that develops in the surface with deflation
Wind-blown deposits of fine silt and mud laid down in broad layers
Wind-blown deposits of sand sized particles laid down in ridges or mounds, typically asymmetrical.
alternating directions of layers in lithified sand dunes