13 Facts About Quaternary glaciation

1.

Quaternary glaciation, known as the Pleistocene glaciation, is an alternating series of glacial and interglacial periods during the Quaternary period that began 2.

FactSnippet No. 1,026,248
2.

Since planet Earth still has ice sheets, geologists consider the Quaternary glaciation to be ongoing, with the Earth now experiencing an interglacial period.

FactSnippet No. 1,026,249
3.

The major effects of the Quaternary glaciation have been the erosion of land and the deposition of material, both over large parts of the continents; the modification of river systems; the creation of millions of lakes, including the development of pluvial lakes far from the ice margins; changes in sea level; the isostatic adjustment of the Earth's crust; flooding; and abnormal winds.

FactSnippet No. 1,026,250
4.

Evidence for the quaternary glaciation was first understood in the 18th and 19th centuries as part of the scientific revolution.

FactSnippet No. 1,026,251
5.

Problem with the theory is that these astronomical cycles have been in existence for many millions of years, but Quaternary glaciation is a rare occurrence.

FactSnippet No. 1,026,252
6.

Computer modelling shows that the uplift would have enabled Quaternary glaciation by producing increased orographic precipitation and cooling the surface temperatures.

FactSnippet No. 1,026,253
7.

Quaternary glaciation created more lakes than all other geologic processes combined.

FactSnippet No. 1,026,254
8.

Climatic conditions that cause Quaternary glaciation had an indirect effect on arid and semiarid regions far removed from the large ice sheets.

FactSnippet No. 1,026,255
9.

Major isostatic adjustments of the lithosphere during the Quaternary glaciation were caused by the weight of the ice, which depressed the continents.

FactSnippet No. 1,026,256
10.

The initial uplift following deQuaternary glaciation was rapid, and took place as the ice was being unloaded.

FactSnippet No. 1,026,257
11.

The total uplift from the end of deQuaternary glaciation depends on the local ice load and could be several hundred meters near the center of rebound.

FactSnippet No. 1,026,258
12.

Moraines and till deposited by Quaternary glaciation glaciers have contributed to the formation of valuable placer deposits of gold.

FactSnippet No. 1,026,259
13.

One of the best documented records of pre-Quaternary glaciation, called the Karoo Ice Age, is found in the late Paleozoic rocks in South Africa, India, South America, Antarctica, and Australia.

FactSnippet No. 1,026,260