A tarn (or corrie loch) is a mountain lake, pond or pool, formed in a cirque (or "corrie") excavated by a glacier. A moraine may form a natural dam below a tarn. [1] The word is derived from the Old Norse word tjörn ("a small mountain lake without tributaries") meaning pond.

2018年2月9日 · Tarns are lakes that form in glacially-carved cirques. They are often dammed by moraines. If they are still associated with moving glaciers, tarns are often full of tiny, glacially-ground sediment that scatter light and can make the water appear colorful.

2017年12月7日 · A mountain pool or lake formed in the cirque of a glacier is known as a tarn, a rock-basin lake, or a corrie loch. A tarn is created when either river or rainwater fills up a cirque. The depressions that have been carved out from weak rocks are then occupied by a series of rock-basin lakes.

tarn, a small mountain lake, especially one set in a glaciated steep-walled amphitheatre known as a cirque (q.v.). This article was most recently revised and updated by Amy Tikkanen.

2018年2月9日 · Cirques are bowl-shaped, amphitheater-like depressions that glaciers carve into mountains and valley sidewalls at high elevations. Often, the glaciers flow up and over the lip of the cirque as gravity drives them downslope. Lakes (called tarns) often occupy these depressions once the glaciers retreat. How can glaciers flow uphill?

2018年6月3日 · A tarn is small mountain lake that is located in a cirque (a steep-walled amphitheater-shaped landform formed at the mouth of a valley glacier). In some places like Northern England, the term tarn is used in a broader sense to refer to all ponds in Northern England’s upland areas.

The southern flank of the fell comprises Tarn and Greathead Crags, the backdrop to the popular picnic spot of Easedale Tarn. Much larger than Codale, this tarn is around 70 ft (20 m) deep and contains perch, eel and trout. [1] Across the tarn are the crags of Blea Rigg.

Many cirques are so scoured that a lake forms in the base of the cirque once the ice has melted. These lakes are called tarns. In the image below the tarn can be seen in the base of the cirque.

Tarn is lakes that are formed in glacially carved cirques. They are obstructed by moraines below a tarn. Tarns are often full of tiny, glacially-ground sediment that pass the light and make the watercolour.

In geology, a proglacial lake is a lake formed either by the damming action of a moraine during the retreat of a melting glacier, a glacial ice dam, or by meltwater trapped against an ice sheet due to isostatic depression of the crust around the ice. [1]