Pleistocene varves in sedimentary rocks. A varve is a sedimentary lamina or sequence that is deposited in a body of still water within a years time. Often found as glacial lake features.
This view shows a glacial moraine holding lake at the base of the Granadier Range. Large blocks of glacially derived material were dumped at the down-valley side of the glacier when it was active. The moraine dammed meltwaters from the receding glacier to form a lake.
Large blocks of glacially derived material were dumped at the down-valley side of the glacier when it was active. The moraine dammed meltwaters from the receding glacier to form a lake.
The Bernese Alps form the centerpiece of this late summer view of Switzerland; Jungfrau, Moench, and Eiger are among the higher peaks of the Central Alps. North of the range is the city of Interlaken, flanked by the Thune See and Brienzer See (lakes); the long valley of the Rhone lies to the south. On the southern flank of the Jungfrau massif is the Aletsch glacier, meltwaters of which feed the upper Rhone; another source is the Rhone glacier at the eastern end of the valley. One estimate holds that roughly half the ice in glaciers of the European Alps has melted since 1850. U-shaped valleys carved by glaciers are clearly visible; some, such as that of the Rhone, have been modified by through-flowing rivers. This photograph was taken in September, 2001 by the crew of Space Shuttle mission 106.
Diablo Lake with glacial rock flour in the water, shown by the green hue of the water. View is to the southwest to views of Colonial, Snowfield and Pyramid Peaks. These mountains are carved from banded gneiss in the Skagit Gneiss Complex.
Meltwater from the glacial lake formed by Alaska's Nellie Juan Glacier escapes by breaching a terminal moraine. Tarns can be seen in the cirques on both sides of the glacier.