preglacial

American  

[pree-gley-shuhl] / priˈgleɪ ʃəl /

adjective

Geology.

1. prior to a given glacial epoch, especially the Pleistocene.

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preglacial British  

/ priːˈɡleɪsɪəl /

adjective

1. formed or occurring before a glacial period, esp before the Pleistocene epoch

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Etymology

Origin of preglacial

First recorded in 1850–55; pre- + glacial

Example Sentences

See Examples For:

preglacial

The largest eastern tributary, Beaver Brook, is in a preglacial valley now converted into a swamp the location and size of which are due entirely to a belt of limestone.

From Drainage Modifications and Glaciation in the Danbury Region Connecticut State of Connecticut State Geological and Natural History Survey Bulletin No. 30 by Sawyer-Harvey, Ruth

Here in subsequent time, the river has cut through the drift-filling of the preglacial valley, developing a passage about twenty rods wide and thirty-five feet deep.

From The Geography of the Region about Devils Lake and the Dalles of the Wisconsin by Atwood, Wallace W.

Great as were the changes made by the carrying power of moving ice, still greater were those made in preglacial times; not, however, from the action of moving ice, but from running water.

From Nature's Miracles, Volume 1 Familiar Talks on Science—World-Building and Life. Earth, Air and Water. by Gray, Elisha

The preglacial course of the Wisconsin south of the dalles has never been determined with certainty, but rational conjectures as to its position have been made.

From The Geography of the Region about Devils Lake and the Dalles of the Wisconsin by Atwood, Wallace W.

More commonly it filled preglacial valleys at certain points only.

From The Geography of the Region about Devils Lake and the Dalles of the Wisconsin by Atwood, Wallace W.