Where do meltwater flows and leaves deposit?
Much of the debris in the glacial environment of both valley and continental glaciers is transported, reworked, and laid down by water. Whereas glaciofluvial deposits are formed by meltwater streams, glaciolacustrine sediments accumulate at the margins and bottoms of glacial lakes and ponds.
Which of the following is sediment deposited by meltwater flowing out of a glacier?
As a glacier melts, till is released from the ice into the flowing water. The sediments deposited by glacial meltwater are called outwash. Since they have been transported by running water, the outwash deposits are braided, sorted, and layered.
What is a ridge like deposit of sediment at the edge of a glacier?
Supraglacial (on top of the ice) and englacial (within the ice) sediments that slide off the melting front of a stationary glacier can form a ridge of unsorted sediments called an end moraine. The end moraine that represents the farthest advance of the glacier is a terminal moraine.
What does the equilibrium line represent in a glacier?
Definition. The equilibrium-line altitude (ELA) marks the area or zone on a glacier separating the accumulation zone from the ablation zone and represents where annual accumulation and ablation are equal.
Where is the equilibrium line on a glacier?
The equilibrium line is at the boundary of the accumulation area and the ablation area, however, the elevation varies from year to year. The ice flows downhill from the accumulation zone towards the ablation zonewhere higher temperatures intensify the melting.
What is the equilibrium line and why is it important quizlet?
The equilibrium line separates the ablation zone and the accumulation zone; it is the altitude where the amount of new snow gained by accumulation is equal to the amount of ice lost through ablation.
What makes up till quizlet?
A mass of till (boulders, pebbles, sand, and mud) deposited by a glacier, often in the form of a long ridge.
Where are continental glaciers found today quizlet?
Continental glaciers now exist only on Antarctica and Greenland. (Carins notes: Antarctica and Greenland are both ice sheets, ice caps are much smaller than ice sheets, an example being the arctic islands.)
Where are continental glaciers mainly located today?
Today, continental glaciers are only present in extreme polar regions: Antarctica and Greenland (Figure 17.3). Historically, continental glaciers also covered large regions of Canada Europe, and Asia, and they are responsible for many distinctive topographic features in these regions (Section 17.2 and 17.3).