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End moraine size and shape are determined by whether the glacier is advancing, receding or at equilibrium. The longer the terminus of the glacier stays in one place, the more debris accumulate in the moraine. There are two types of end moraines: terminal and recessional. Terminal moraines mark the maximum advance of the glacier.
A terminal moraine, also called an end moraine, is a type of moraine that forms at the terminal (edge) of a glacier, marking its maximum advance. At this point, debris that has accumulated by plucking and abrasion, has been pushed by the front edge of the ice, is driven no further and instead is deposited in an unsorted pile of sediment.
A recessional moraine is a ridge of deposited debris that occurs when the glacier is stationary for an extended length of time. [27] This occurs when a glacier meaning the glacier is in equilibrium or has halted during retreat . The occurrence of end moraines can be useful for determining a pattern of advance, retreat, and equilibrium of a ...
Moraine: Built up mound of glacial till along a spot on the glacier. Feature can be terminal (at the end of a glacier, showing how far the glacier extended), lateral (along the sides of a glacier), or medial (formed by the merger of lateral moraines from contributory glaciers). Types: Pulju, Rogen, Sevetti, terminal, Veiki
A moraine-dammed lake, occurs when the terminal moraine has prevented some meltwater from leaving the valley. When a glacier retreats, there is a space left over between the retreating glacier and the piece that stayed intact which holds leftover debris . Meltwater from both glaciers seep into this space creating a ribbon-shaped lake due to the ...
PPhysiography of the Valparaiso Moraine. Valparaiso Moraine at Mink Lake, north of Valparaiso, Indiana. The Valparaiso Moraine is a recessional moraine (a landform left by receding glaciers) that forms an immense U around the southern Lake Michigan basin in North America. It is a band of hilly terrain composed of glacial till and sand.
Ground moraine with uncharacteristic reddish iron-rich sediments extended from St. Cloud, Minnesota, back northeastward. The glaciers produced a set of terminal moraines which extend from northwest of St. Cloud into the Twin Cities and up into central Wisconsin. They deposited reddish sands and gravels westward and southward in outwash plains.
1.5 Moraines of the Great Plains of the United States. 1.6 Moraines of the U.S. and Canadian Rocky Mountains. 2 Europe. 3 Antarctica. Toggle Antarctica subsection.