Glaciation in a sentence

Both Polar and Nether-Polar Urals are typically Alpine; they bear traces of Pleistocene glaciation, along with permafrost and extensive modern glaciation, including 143 extant glaciers.

The onset of Antarctic glaciation occurred during the early Oligocene, and the effect of the Drake Passage opening on this glaciation has been the subject of much research.

The Port Askaig Formation, which is made up of layers of rock up to 1.1km thick, was likely to have been laid down between 662 and 720 million years ago during the Sturtian glaciation, research suggests.

A fall in the sea-level led to massive glaciation; consequently, grasslands abounded in nutritious forage.

A further difficulty in suggesting that BIFs marked the end of the glaciation is that they are found interbedded with glacial sediments.

A great change was in the cards, however, and sea levels fell steadily in accord with the cooling temperatures for ~30 million years leading up to the Hirnantian glaciation.

Although the boron variations may be evidence of extreme climate change, they need not imply a global glaciation.

Another factor is the increased aridity occurring with glacial maxima, which reduces the precipitation available to maintain glaciation.

Before this capture the Nive had deposited pebbles from the Mindel glaciation of medium to large sizes that slowed erosion of the hills causing the bottleneck at Bayonne.

Bornemann, Norris RD, Friedrich O, Beckmann B, Schouten S, Damsté JS, Vogel J, Hofmann P, Wagner T.,Isotopic evidence for glaciation during the Cretaceous supergreenhouse.

Climate Climates during the Tertiary slowly cooled, starting off in the Paleocene with tropical-to-moderate worldwide temperatures and ending before the first extensive glaciation at the start of the Quaternary.

Detractors argue that this kind of glaciation would have made life extinct entirely.

During a period of global glaciation, it must also be demonstrated that glaciers were active at different global locations at the same time, and that no other deposits of the same age are in existence.

During glaciation, water was taken from the oceans to form the ice at high latitudes, thus global sea level dropped by about 110 meters, exposing the continental shelves and forming land-bridges between land-masses for animals to migrate.

During the last glaciation, this area was covered by ice that strongly eroded Chilean relief structures.

During the Silurian, Gondwana continued a slow southward drift to high southern latitudes, but there is evidence that the Silurian icecaps were less extensive than those of the late Ordovician glaciation.

During the Wisconsin glaciation 10,000 years ago, ice covered the region at a thickness of convert.

Final closure of Panama and the onset of northern hemisphere glaciation.

For a while, it was thought that the glaciation of Antarctica may have significantly contributed to the cooling of the ocean, however, recent evidence tends to deny this.

Gernon et al. demonstrated that the increase in alkalinity over the course of glaciation is sufficient to explain the thickness of cap carbonates formed in the aftermath of Snowball Earth events.