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Trim line

Clear line on the side of a valley marking the most recent highest extent of the glacier From Wikipedia, the free encyclopedia

Trim line
For the variety of telephone set, see Trimline.
Not to be confused with Line trim.

A trim line, also written as trimline, is a clear line on the side of a valley formed by a glacier. The line marks the most recent highest extent of the glacier. The line may be visible due to changes in color to the rock or to changes in vegetation on either side of the line.

Thumb
A trim line marks the previous height of Tana Glacier in Alaska
Thumb
A trim line on Vihren peak, Pirin Mountain, Bulgaria

The term "trim line" is also used for similar looking phenomena caused by floods, volcanic activity, or tsunamis.[1]

References

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