Search results
Results from the WOW.Com Content Network
Glacial landforms are landforms created by the action of glaciers. Most of today's glacial landforms were created by the movement of large ice sheets during the Quaternary glaciations. Some areas, like Fennoscandia and the southern Andes, have extensive occurrences of glacial landforms; other areas, such as the Sahara, display rare and very old ...
Arête – Narrow ridge of rock which separates two valleys formed by glacial movement; Cirque – Amphitheatre-like valley formed by glacial erosion; Col – Lowest point on a mountain ridge between two peaks; Crevasse – Deep crack, or fracture, in an ice sheet or glacier; Corrie – Amphitheatre-like valley formed by glacial erosion or cwm
Fluvio-glacial landforms and erosional surfaces include: outwash plains, kames, kame terraces, kettle holes, eskers, varves, and proglacial lakes. [4] Meltwater streams and formed by glaciers, especially in warmer seasons. Supra-glacial streams, those above the glacial surface, and subglacial streams, those beneath the glacial surface. [5]
Glacial landform – Landform created by the action of glaciers; Drumlin – Elongated hill formed by glacial action; Esker – Long, winding ridge of stratified sand and gravel associated with former glaciers; Moraine-dammed lake – Type of lake formed by glaciation; Terminal moraine – Type of moraine that forms at the terminal of a glacier
The goal of glacial morphology is to gain a better understanding of glaciated landscapes and the way they are shaped. [2] Types of glaciers can range from massive ice sheets, such as the Greenland ice sheet, to small cirque glaciers found perched on mountain tops. [3] Glaciers can be grouped into two main categories:
The Lower Curtis Glacier in North Cascades National Park is a well-developed cirque glacier; if the glacier continues to retreat and melt away, a lake may form in the basin. Eventually, the hollow may become a large bowl shape in the side of the mountain, with the headwall being weathered by ice segregation, and as well as being eroded by ...
The term "glacial series" is restricted to landforms created by glaciers and classified by geomorphological rules, as opposed to the glacial sediments and sedimentary rocks associated with glaciers and classified by their geological features. A complete glacial series is formed when the edge of the ice sheet remains static for a long time and ...
The two known factors that must be present in order to create rock glaciers are low ice velocity and permafrost. Most glacial rock glaciers are created by the recession of debris covered glaciers. [citation needed] Glacial rock glaciers are often found in cirque basins where rocky debris falls off the steep sides and accumulates on ice glaciers ...