ALLUVIUM n.
Deposits of earth, sand, gravel, and other transported matter, made by rivers, floods, or other causes, upon land not permanently submerged beneath the waters of lakes or seas. Lyell.
BOWLDER; BOULDER n.
A mass of any rock, whether rounded or not, that has been transported by natural agencies from its native bed. See Drift. Bowlder clay, the unstratified clay deposit of the Glacial or Drift epoch, often containing large numbers of bowlders. -- Bowlder wall, a wall constructed of large stones or bowlders.…
ERRATIC a.
tic fever." Harvey. Erratic blocks, gravel, etc. (Geol.), masses of stone which have been transported from their original resting places by the agency of water, ice, or other causes. -- Erratic phenomena, the phenomena which relate to transported materials on the earth's surface.
GLACIAL a.
m; as acetic or carbolic acid. -- Glacial drift (Geol.), earth and rocks which have been transported by moving ice, land ice, or icebergs; bowlder drift. -- Glacial epoch or period (Geol.), a period during which the climate of the modern temperate regions was polar, and ice covered large portions of the northern hemi…