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medial moraine

a ridge of glacial drift formed by the junction of two converging valley glaciers. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for medial moraine
Historical Examples
  • On the medial moraine one mile from the front there was no measureable displacement.

    Travels in Alaska John Muir
  • The clouds were just coming up as we halted on the medial moraine.

    Mount Everest the Reconnaissance, 1921 Charles Kenneth Howard-Bury
  • When two glaciers unite, their inside lateral moraines join and form a medial moraine.

    Mount Rainier

  • A short distance above the glacier's terminus the medial moraine and the ever-broadening marginal bands come together.

    Mount Rainier

  • A medial moraine cannot be formed in this way, since no rock fragments can fall so far out from the sides.

    The Elements of Geology William Harmon Norton
  • When two glaciers flow together, one marginal moraine from each will coalesce to form a medial moraine.

    Geology William J. Miller
medial moraine in Science
medial moraine
See under moraine.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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