Given an appropriate relationship between an ice sheet and the terrain, the head of water in a moulin can provide the power and medium with which a tunnel valley may be formed.
42.
The course of a tunnel valley typically runs from thickest glacial ice to the glacier margin; as a result the glacial ice pressurizes the water such that it runs uphill toward its end.
43.
The " Volksdorfer Teichwiesen " ( literally Volksdorf pond meadows ) features the river Saselbek as well as a tunnel valley which was granted environment protection in 1993 and is home to many endangered species.
44.
The culture is named after a tunnel valley near the village of Ahrensburg, northeast of Hamburg in the German state of Schleswig-Holstein, where Ahrensburg find layers were excavated in Meiendorf, Stellmoor and Borneck.
45.
One of these tributaries east of the tunnel valley probably became the downstream portion of Cedar Creek, later capturing flow from the valley itself and then, finally, the entire upstream segment of the ancestral Eel.
46.
Hence the configuration of the various tunnel valleys formed by a specific glaciation provides a general mapping of the glacier thickness when the tunnel valleys were formed, particularly if the original surface relief under the glacier was limited.
47.
Hence the configuration of the various tunnel valleys formed by a specific glaciation provides a general mapping of the glacier thickness when the tunnel valleys were formed, particularly if the original surface relief under the glacier was limited.
48.
Hence the configuration of the various tunnel valleys formed by a specific glaciation provide a general mapping of the glacier thickness when the tunnel valleys were formed, particularly if the original surface relief under the glacier was limited.
49.
Hence the configuration of the various tunnel valleys formed by a specific glaciation provide a general mapping of the glacier thickness when the tunnel valleys were formed, particularly if the original surface relief under the glacier was limited.
50.
Ice melt from the Niagara Escarpment flowed through tunnel valleys beneath the ice expanded to form a west-to-east passage between the main Laurentide ice sheet and a mass of ice in the Lake Ontario basin.
