10SUPRA-GLACIAL STREAMGlaciers can have streams on their surface!
11MOULINS Holes in glaciers that water flows through Connect surface streams to subsurface streamsSediment depositionforms kames
12SUB-GLACIAL STREAMSDeposition forms eskers Causes glacial surges
13ICE CAVE AT BOTTOM OF GLACIER Looking inside a sub-glacial stream;Can be 10-km in length or more
14CIRQUE a semicircular or amphitheater -shaped bedrock feature created as glaciers scour back into themountain. This is where the snowand ice forming the glacier firstaccumulates; it is the "headwaters“of a glacier.
15ARETE steep-sided, sharp-edged bedrock ridge formed by two glaciers eroding awayon opposite sides of the ridge
16HORN a pyramid-shaped mountain peak created by several glaciers eroding away at different sidesof the same mountain.
17COLa low spot or pass along a cirque or an arete.
18Result of abrasion by sand at bottom of glacier GLACIAL POLISHResult of abrasion by sand at bottom of glacier
19STRIATIONS lines etched in bedrock underlying glaciers as individual particlesembedded in the glacierscratch the underlyingbedrock.These lines indicatethe orientation ofGlacial flow.
20NUNATAKPeak surrounded by glaciersbut not itself glaciated
21TARN a glacial lake produced by scouring. These are often found in cirques.
22U-SHAPED VALLEY a glacially eroded valley; also called a glacial trough.
23a chain of lakes in a glacial valley. PATERNOSTER LAKESa chain of lakes in a glacial valley.
27DEPOSITIONMorainesMoraine: an accumulation of unconsolidated materialdeposited by glaciers. These accumulations tend tobe unsorted; that is, we find many different sizedparticles deposited in moraines, ranging from finesilt to large boulders. The sediment and rock materialin moraines also tend to have angular edges.There are many different types of moraines, anddepending on the type, the appearance of morainesmay vary.
28TILL Unconsolidated glacial deposits that compose moraines. Nutrient-rich but poor soiltexture for farmingMuch of NE USA
29TERMINAL OR END MORAINE an accumulation ofunconsolidated materialdeposited at the snout endof a glacierMarks the furthest advance ofa glacierRecessional moraines are endmoraines caused as a glacierretreats