
In the Geologic time scale used nowadays in Geology the term Diluvium has been replaced by Pleistocene. Diluvium is a term in geology for superficial deposits formed by flood-like operations of water, and so contrasted with alluvium or alluvial deposits formed by slow and steady aqueous agencies. The term was formerly given to the boulder clay dep...
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http://en.wikipedia.org/wiki/Diluvium

• (n.) A deposit of superficial loam, sand, gravel, stones, etc., caused by former action of flowing waters, or the melting of glacial ice.
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http://thinkexist.com/dictionary/meaning/diluvium/
Di·lu'vi·um noun ;
plural English
Diluviums , Latin
Diluvia . [ Latin
diluvium . See
Dilute ,
Deluge .]
(Geol.) A deposit of superficial loam, sand, gravel, stones, etc., caused by former action of flowing waters, or the melting of glacial ice. ...
Found on
http://www.encyclo.co.uk/webster/D/67

A deposit of superficial sand, loam, gravel, pebbles, etc.
Found on
http://www.legendsofamerica.com/

a coarse surficial deposit formerly attributed to a general deluge but now regarded as glacial drift.
Found on
https://www.infoplease.com/dictionary/diluvium
No exact match found.