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Geologic Features of Glaciation

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Presentation on theme: "Geologic Features of Glaciation"— Presentation transcript:

1 Geologic Features of Glaciation

2 Horn Mountain peak formed by glacial erosion

3 Cirque Bowl shaped depression in a mountain formed by glacial erosion and frost wedging

4 Arete Sharp ridge between two cirques formed by glacial erosion of bedrock on mountain peaks

5 Esker Snake like deposit of gravel formed by glacier deposition in a meltwater stream

6 Lateral Moraine Narrow band of sediment along the outer sides of an alpine glacier formed by erosion of valley walls

7 Medial Moraine Narrow band of sediment within an alpine glacier formed when two lateral moraines meet

8 End Moraine Mound of unsorted sediment at the end of a glacier formed by glacial advancement which bulldozes sediment to a ridge

9 Ground Moraine Loose sediment found along flat terrain once covered by a glacier; formed when sediment is left behind by a retreating glacier

10 Kettle Lake Hole that fills with glacial water formed when ice breaks off glaciers and melts

11 Drumlin Elongated hill of sediment formed by deposition of a retreating glacier

12 Outwash Plain Accumulation of sediment in front of an end moraine formed by glacial deposition

13 Meltwater Rivers of glacial water filled with sediment formed when glaciers melt

14 U-Shaped Valley Alpine valleys shaped like a U due to glacial erosion

15 Erractics Transported rocks and boulders due to glacial movement and deposition

16 Till Unsorted glacial sediment due to glacial deposition

17 Kame Hill of sorted glacial deposits found on ground moraines; formed by deposits made by a retreating glacier

18 Truncated Spur Steep triangular shaped valley walls formed by alpine glacial erosions

19 Tributary Glaciers Small glacial rivers that eventually join a valley glacier; due to glaciers forming in small alpine regions

20 Braided Stream Stream of meltwater that flows towards an outwash plain; formed as glacier melts but rivers are choked with sediment

21 Glacial Striations Parallel scratches in bedrock due to glacial abrasion

22 Ogives Light and dark bands/ridges at the base of glacial ice falls; created by rapid glacial flow downhill (icefall)


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