gFlashcards

Percentage of the earths surface under desert

Form of erosion where sediment carried along the bottom of a glacier acts like sandpaper that smooths surfaces

How glaciers erode surfaces

Type of glacier formed in mountain areas

sharp edged ridges formed between two troughs

Bowl-like depression formed by frost wedging and plucking steep cliffs at edges.

Cracks formed in the top 150 feet of glacier.

alternating directions of layers in lithified sand dunes

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.

arid regions covering approximately 30% of the earth's surface

Streams that only run when there is precipitation and then dry up quickly

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

ice ages

Thick ice mass formed by the accumulation, compaction and recrystallization of snow

Tributary troughs which are higher in elevation than the main trough

sharp pyramid shaped peaks formed between more than two troughs

Large bodies of ice that form on continents and grow outward in all directions

mountain peaks buried in sediment

Wind-blown deposits of fine silt and mud laid down in broad layers