Glaciations in a sentence

At least four major glaciations have occurred in the Sierra Nevada, locally called the Sherwin (also called the pre-Tahoe), Tahoe, Tenaya, and Tioga.

CO 2 models suggest that values were low in the late Cenozoic and Carboniferous Permian glaciations.

Emerging evidence suggests that the Earth underwent a number of glaciations during the Neoproterozoic, which would stand strongly at odds with the snowball hypothesis.

Extent and Chronology of Glaciations, Vol. 3 (Latin America, Asia, Africa, Australia, Antarctica).

Geology Sudetes Mountains in the Silesia region The geological structure of Poland has been shaped by the continental collision of Europe and Africa over the past 60 million years and, more recently, by the Quaternary glaciations of northern Europe.

However, the presence or absence of land masses at the poles is not sufficient to guarantee glaciations or exclude polar ice caps.

Later, during quaternary glaciations, as glaciers swept by, they further deepened those valleys which would eventually (at the end of the last glaciation) be invaded with sea and become calanques.

Negative feedback processes Ice sheets that form during glaciations cause erosion of the land beneath them.

Note that great uncertainty surrounds the dating of pre- Gaskiers glaciations.

Possibly as a consequence of the low-latitude position of most continents, several large-scale glacial events occurred during the Neoproterozoic Era including the Sturtian and Marinoan glaciations of the Cryogenian.

Some believe that the strength of the orbital forcing is too small to trigger glaciations, but feedback mechanisms like CO 2 may explain this mismatch.

The area was affected by sea level changes during the repeated Quaternary glaciations.

There is evidence that ocean circulation patterns are disrupted by glaciations.

The repeated glaciations of the Pleistocene were caused by the same factors.

These glaciations are believed to have been so severe that there were ice sheets at the equator—a state known as the " Snowball Earth ".

The upper boundary was set at the start of the Pleistocene glaciations.

This led to the problem that the proposed base of the Pleistocene was at 1.805 Mya, long after the start of the major glaciations of the northern hemisphere.

Within a long-term ice age, individual pulses of cold climate are termed " glacial periods " (or alternatively "glacials" or "glaciations" or colloquially as "ice age"), and intermittent warm periods are called " interglacials ".