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Aurkjosen Cirque
The Aurkjosen Cirque is a mainly ice-free cirque marked by several old moraines, lying at the east side of Lake Unter-See in the Gruber Mountains of the Wohlthat Mountains, Queen Maud Land. It was discovered and plotted from air photos by the Third German Antarctic Expedition, 1938–39, re-plotted from air photos and from surveys by the Sixth Norwegian Antarctic Expedition, 1956–60, and named "Aurkjosen" ("the gravel cove"). References * Cirques of Queen Maud Land Princess Astrid Coast {{PrincessAstridCoast-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cirque
A (; from the Latin word ') is an amphitheatre-like valley formed by glacial erosion. Alternative names for this landform are corrie (from Scottish Gaelic , meaning a pot or cauldron) and (; ). A cirque may also be a similarly shaped landform arising from fluvial erosion. The concave shape of a glacial cirque is open on the downhill side, while the cupped section is generally steep. Cliff-like slopes, down which ice and glaciated debris combine and converge, form the three or more higher sides. The floor of the cirque ends up bowl-shaped, as it is the complex convergence zone of combining ice flows from multiple directions and their accompanying rock burdens. Hence, it experiences somewhat greater erosion forces and is most often overdeepened below the level of the cirque's low-side outlet (stage) and its down-slope (backstage) valley. If the cirque is subject to seasonal melting, the floor of the cirque most often forms a tarn (small lake) behind a dam, which marks the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
