GEOLOGY & PLANETARY SCIENCE A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z                    HOME ABOUT CATEGORIES SITE MAP COPYRIGHT ADVERTISE CONTACT entire Web this site moraine August 1968 southwest-looking photograph of the surface of the Bucher Glacier, an outlet glacier of the Juneau Icefield, showing several glacier tables, several conical mounds of sediment-covered ice, and several small piles of sediment left on the ice surface marking the position of former mounds, Coast Mountains, Tongass National Forest, Alaska. Credit: USGS An accumulation of boulders and rock fragments carried or deposited by a glacier. Ground moraine is drift left in a sheet as a glacier retreats. Terminal moraine are ridges deposited when the ice is melting prior to the glacial retreat; a series of ridges may mark pauses in the retreat. Lateral moraines are formed of debris that falls onto the glacier: when two glaciers merge their lateral moraines may unite to form a medial moraine. Related category    • GEOLOGY AND PLANETARY SCIENCE Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) BACK TO TOP