glacial epoch in a sentence
- When the ice of the last glacial epoch had retreated so far that its front border lay on a northward slope, belonging to the drainage area of the Great Lakes, bodies of water accumulated in front of the ice margin, forming glacio-marginal lakes.
- A relict population of great basin sagebrush ( " Artemisia tridentata " ) is visible along Highway 33 at the Bear Canyon trailhead; several populations of this species are left over from the last glacial epoch, when it was more widespread due to the cooler climate then.
- The peninsula was not deglaciated until 6, 500 years ago ( 11, 500 years after the Last Glacial Maximum ) and is believed to have been the prehistoric centre from which the vast Laurentide Ice Sheet spread over most of North America during the last glacial epoch.
- It is noteworthy that the Clay-with-Flints is developed over an area which is just beyond the limits of the ice sheets of the Glacial epoch, and the peculiar conditions of late Pliocene and Pleistocene times; involving heavy rain, snow and frost, may have had much to do with the mingling of the Tertiary and Chalky material.