medial moraine
geology
Quick Summary
Gornergletscher (Gorner Glacier
Medial moraine of Gornergletscher (Gorner Glacier) in the Pennine Alps near Zermatt, Switz.
A medial moraine is a ridge of glacial debris found in the middle of a glacier, running parallel to its sides. It typically forms when two glaciers merge, and their lateral moraines combine. This debris, known as till, can range from large boulders to sand and clay. The medial moraine is deposited as the glacier moves, marking the area where the two ice streams converged.12
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