0 a time in the past when the temperature was very cold and glaciers covered large parts of the earth
The abrupt return to base line values of some excursion curves may reflect this glacial period and associated nondeposition.
Innumerable boulders, relics of the glacial period encumbered the track, the only sound we heard was the croak of the curlew the whistle of the golden plover.
They fear that the beginning of a second glacial period is upon them.
They are important in determining sea level rise since the last glacial period.
Low outcroppings of rock in the mown turf were grooved and scarred by the last glacial period.
Some of the plant species have survived the last glacial period by turning into relict organisms.
During the last glacial period, ice enclosed nearly all of these mountains.
The most important one is believed to be a result of the melting of continental ice sheets at the end of the last glacial period.
