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A ''Zungenbecken'', also called a tongue basin or tongue-basin, is part of a succession of
A ''Zungenbecken'', also called a tongue basin or tongue-basin, is part of a succession of ice age
An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and gree ...
geological landforms, known as a glacial series The glacial series refers to a particular sequence of landforms in Central Europe that were formed during the Pleistocene glaciation beneath the ice sheets, along their margins and on their forelands during each glacial advance.snout of the glacier (German: ''Gletscherzunge'') recedes, which initially fills with
meltwater
Meltwater is water released by the melting of snow or ice, including glacial ice, tabular icebergs and ice shelves over oceans. Meltwater is often found in the ablation zone of glaciers, where the rate of snow cover is reducing. Meltwater can be ...
, forming a proglacial lake, and later may be filled with surface water
Surface water is water located on top of land forming terrestrial (inland) waterbodies, and may also be referred to as ''blue water'', opposed to the seawater and waterbodies like the ocean.
The vast majority of surface water is produced by prec ...
from streams or precipitation. When the glacier has more fully retreated this produces a finger lake or glacial piedmont lake (German: ''Zungenbeckensee'', known as a ''Gletscherendsee'' of the glacial series in the Alpine Foreland). The term ''Zungenbecken'' is of German origin, but used in English language sources.Charlesworth, J.K. (1966). ''The Quaternary Era: With Special Reference to its Glaciation'', in Two Volumes (Volumes 1–2)
Examples are the Tegernsee, Ammersee
Ammersee (English: Lake Ammer) is a Zungenbecken lake in Upper Bavaria, Germany, southwest of Munich between the towns of Herrsching and Dießen am Ammersee. With a surface area of approximately , it is the sixth largest lake in Germany. The lake ...
, Starnberger See
Lake Starnberg, or ''Starnberger See'' ) — called Lake Würm, or ''Würmsee'' , until 1962 — is Germany's second-largest body of fresh water, having great depth, and fifth-largest lake by area. It and its surroundings lie in three different Ba ...
, Lake Constance
Lake Constance (german: Bodensee, ) refers to three Body of water, bodies of water on the Rhine at the northern foot of the Alps: Upper Lake Constance (''Obersee''), Lower Lake Constance (''Untersee''), and a connecting stretch of the Rhine, ca ...
, Chiemsee
Chiemsee () is a freshwater lake in Bavaria, Germany, near Rosenheim. It is often called "the Bavarian Sea". The rivers Tiroler Achen and Prien flow into the lake from the south, and the river Alz flows out towards the north. The Alz flows in ...
, Tollensesee
Tollensesee is a ''zungenbecken'' lake in Mecklenburg-Vorpommern, Germany. It belongs to the Mecklenburg Lake District. At an elevation of 14.8 m, its surface area is 17.4 km². Its maximum depth is about 33 m. The lake is 10.4 km long an ...
and the Baltic Sea
The Baltic Sea is an arm of the Atlantic Ocean that is enclosed by Denmark, Estonia, Finland, Germany, Latvia, Lithuania, Poland, Russia, Sweden and the North and Central European Plain.
The sea stretches from 53°N to 66°N latitude and from ...
.
See also
*Glacier
A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its Ablation#Glaciology, ablation over many years, often Century, centuries. It acquires dis ...
* Drumlin
A drumlin, from the Irish word ''droimnín'' ("littlest ridge"), first recorded in 1833, in the classical sense is an elongated hill in the shape of an inverted spoon or half-buried egg formed by glacial ice acting on underlying unconsolidated ...
References
{{topography-stub Glacial landforms