Kansan Glacial Stage

Kansan Glacial Stage

      major division of Pleistocene deposits and time in North America (the Pleistocene Epoch began about 2,500,000 years ago and ended about 10,000 years ago). The Kansan glaciation followed the Aftonian Interglacial Stage and preceded the Yarmouth Interglacial Stage, both periods of moderate climatic conditions. The Kansan Glacial Stage was named for deposits studied in northeastern Kansas, although more representative and complete deposits exist near Afton, Iowa.

      The Kansan glaciations appear to have been very extensive. Away from the ice margins, in present Kansas and southern Indiana, well-developed forests and mammalian faunas existed. Areas that are now generally arid or semi-arid were clearly moister. The Kansan fauna was diverse and abundant and essentially modern in composition. Animal ranges and distributions, however, were much different. Characteristic fossil forms of the Kansan Glacial Stage include the mammoth, musk-ox, moose, and extinct giant beaver. In the Midwest a widespread volcanic ash bed, the Pearlette Ash, is an important horizon marker; the Pearlette Ash was probably produced by volcanic eruption in the western Cordilleras.

* * *


Universalium. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Elsterian Glacial Stage — ▪ Pleistocene deposits and time, northern Europe       major division of Pleistocene deposits and time in northern Europe (the Pleistocene Epoch began about 2,500,000 years ago and ended about 10,000 years ago). The Elsterian followed the… …   Universalium

  • Aftonian Interglacial Stage — ▪ geology       major division of Pleistocene deposits and time (1,600,000 to 10,000 years ago) in North America. The Aftonian Interglacial, a time of relatively moderate climatic conditions, followed the Nebraskan Glacial Stage and preceded the… …   Universalium

  • Glacial history of Minnesota — The glacial history of Minnesota is most defined since the onset of the last glacial period, which ended some 10,000 years ago. Within the last million years, most of the Midwestern United States and much of Canada were covered at one time or… …   Wikipedia

  • Pre-Illinoian Stage — The Pre Illinoian Stage is the name currently used for early and middle Pleistocene glacial and interglacial deposits within North America. As the oldest stage in the North American nomenclature, it precedes the Illinoian Stage.Hallberg, G.R.,… …   Wikipedia

  • Yarmouth Interglacial Stage — ▪ geology       major division of Pleistocene deposits and time (1,600,000 to 10,000 years ago) in North America. The Yarmouth Interglacial was named for deposits that were studied in the region of Yarmouth, Iowa, and is equivalent to the Mindel… …   Universalium

  • Anglian Stage — The Anglian Satge is the name for a middle Pleistocene stage used in the British Isles. It precedes the Hoxnian Stage and follows the Cromerian Stage in the British Isles. The Anglian Stage is equivalent to the Elsterian Stage of Europe and… …   Wikipedia

  • Anglian (stage) — The Anglian Stage is the name for a middle Pleistocene stage used in the British Isles. It precedes the Hoxnian Stage and follows the Cromerian Stage in the British Isles. The Anglian Stage is equivalent to the Elsterian Stage of northern… …   Wikipedia

  • Beestonian stage — The Beestonian Stage is the name for an early Pleistocene stage used in the British Isles. It precedes the Cromerian Stage and follows the Pastonian Stage. This stage consists of alternating glacial and interglacial phases instead of being a… …   Wikipedia

  • Cromerian Stage — The Cromerian Stage is the name for a middle Pleistocene stage used in the in the British Isles that is known as the Cromerian Complex in Europe. It precedes the Anglian Stage and follows the Beestonian Stage in the British Iles. The Cromerian… …   Wikipedia

  • Hoxnian Stage — The Hoxnian Stage is a middle Pleistocene stage of the geological history of the British Isles. It precedes the Wolstonian Stage and follows the Anglian Stage. The Hoxnian Stage corresponds to the Holstein Interglacial (or Stage ) in northern… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”