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

The preservation of this soil implies that the ice has been nonerosive and frozen to the bed for much of that time, that there was no substantial exposure of central Greenland once the ice sheet became fully established, and that preglacial landscapes can remain preserved for long periods under continental ice sheets.

From Science Magazine

When the dam was removed or cut to its base, the lake disappeared and drainage followed its preglacial course.

From Project Gutenberg

The consideration of the effects of glaciation and of subsequent river erosion are postponed, but it may be stated that within the area which was glaciated the post-glacial streams have been largely occupied in removing the drift deposited by the ice from the preglacial valleys, or in cutting new valleys in the drift.

From Project Gutenberg

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 Project Gutenberg

After the ice had melted, the mantle of drift which it left was sometimes so disposed as to completely obliterate preglacial valleys.

From Project Gutenberg