Glaciers Notes

Continental Glacier - an ice sheet covering a considerable part of a continent.

Alpine (Valley) Glacier - form in high mountains and travel through valleys

U-shaped valleys - carves out the bottom and sides of a valley

Finger lakes - carved U-shaped valleys where deposits of gravel damned streams and caused the depressions to become lakes.

Striations - parallel scratches in rock

Glacial grooves - larger particles that scratch bedrock

Cirques - bowl-shaped depression

Aretes - where 2 cirques meet, a sharp narrow ridge

Horns - glaciers on three or more sides of a mountain

Moraines - sediment at the bottom of a glacier

Eskers - winding ridge of sediment

Drumlins - elongated landforms

Erratics - large boulders found where they did not form

Outwash plains - occur in front of melting glaciers

How do KETTLE LAKES FORM? Blocks of ice get stuck in the sediment. They eventually melt to form lakes.