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

This fact explains, in part, why the glacier had little difficulty in altering the preglacial drainage, and how the change so effected became permanent.

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

The preglacial valleys of this slope were obliterated by being filled during the glacial epoch.

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

When preglacial valleys were filled by the drift in spots only, the postglacial streams followed them where they were not filled, only to leave them where the blocking occurred.

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

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.

The valley of the Ohio River will probably average a mile in width at its upper level and, deep as it is to-day, it was much deeper in preglacial times.

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