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Glacier morphology, or the form a glacier takes, ... Valley glaciers are outlet glaciers that provide drainage for ice fields, icecaps or ice sheets. [15]
Apart from the landforms left behind by glaciers, glaciers themselves are striking features of the terrain, particularly in the polar regions of Earth. Notable examples include valley glaciers where glacial flow is restricted by the valley walls, crevasses in the upper section of glacial ice, and icefalls—the ice equivalent of waterfalls.
Glaciers are categorized by their morphology, thermal characteristics, and behavior. Alpine glaciers form on the crests and slopes of mountains. A glacier that fills a valley is called a valley glacier, or alternatively, an alpine glacier or mountain glacier. [13]
The first approach is suitable for moraines associated with contemporary glaciers—but more difficult to apply to old moraines, which are defined by their particular morphology, since their origin is debated. Some moraine types are known only from ancient glaciers, while medial moraines of valley glaciers are poorly preserved and difficult to ...
Exact kame terrace morphology is dependent on the flow of the formative meltwater stream, and the angle between the ice margin and valley wall. [25] Kame terraces are useful tool to indicate past ice margins. [30] A kame terrace is a relatively flat surface of sediments that was deposited between the valley surface and the glacier. When a kame ...
Glaciers, while geographically restricted, are effective agents of landscape change. The gradual movement of ice down a valley causes abrasion and plucking of the underlying rock. Abrasion produces fine sediment, termed glacial flour. The debris transported by the glacier, when the glacier recedes, is termed a moraine. Glacial erosion is ...
Glaciers Terms : Ablation zone • Accumulation zone • Bergschrund • Crevasse • Glacier morphology • Moraine • Moulin • Randkluft • Rock glacier Valley glaciers : Aletsch Glacier • Baltoro Glacier • Fiescher Glacier • Glacier Blanc • Glacier Noir • Gorner Glacier • Mer de Glace • Morteratsch Glacier
The long axis of each drumlin is parallel to the direction of movement of the glacier at the time of formation. [12] Inspection of aerial photos of these fields reveals glacier's progress through the landscape. The Múlajökull drumlins of Hofsjökull are also arrayed in a splayed fan distribution around an arc of 180°. [13]