Internet Encyclopedia of Science
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
COPYRIGHT
NEWSLETTER

  



till



till
The surface of the ground in this area adjacent to Sherman glacier is covered with a coarse glacial till. Chugach Mountains, Chugach National Forest, Alaska. Credit: USGS
Also known as boulder clay, the unsorted material left behind on the land after the retreat of a glacier. Till is a heterogeneous mixture of different sized material deposited by moving ice (lodgement till) or by the melting in-place of stagnant ice (ablation till). After deposition, some tills are reworked by water.

See also drift, drumlin, moraine.


Related category

   • GEOLOGY AND PLANETARY SCIENCE


Source: USGS


Also on this site:

Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History



BACK TO TOP