glacier terms Flashcards
horn
a hard permanent outgrowth, often curved and pointed.
Arête
thin, jagged crest that separates two adjacent glaciers
tributary glacier
a small glacier that flows into a larger glacier
lateral moraine
glacially - transported rock and debris, they form on the side of glaciers or at the boundary between two tributary glaciers + often mark edges of an ice body.
terminal moraine
furthest point of sediment, which is formed into a large mound outlining the front edge of the glacier.
rock and boulders.
flood plain
a generally flat area of land next to a river or stream. stretches from the bank of the river to the outer edges of the valley.
drumlin
extended, oval hill or ridge of compacted sediment deposited + shaped by a glacier.
kame (small mound of hill)
a glacial land form, irregularly shaped hill/mound composed of sand, gravel. accumulates in depression on a retreating glacier, then deposited on land surface with further melting of glacier.
kettle holes
small depressions formed by the melting of remnant ice blocks that are permanently + periodically filled with water.
till (deposited material)
unsorted material deposited directly by glacial ice.
Esker
a long, narrow, winding ridge composed of stratified sand + gravel deposited by a subglacial meltwater stream.
ribbon lake
long and very deep, finger shaped lake usually found in glacial trough.
terminus
lowest end of a glacier
medial moraine
form where two tributary glaciers come together
crevasses
a deep, wedge-shaped opening in a moving mass of ice called a glacier
