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The Maastrichtian (Late Cretaceous) climate in the Northern Hemisphere

By
Lena B. Golovneva
Lena B. Golovneva
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Published:
January 01, 2000

Abstract

This investigation of the Maastrichtian climate in the Northern Hemisphere is based on taxonomic and ecological studies of fossil floras, leaf physiognomy and the distribution of dinosaurian faunas. Fossil plant evidence indicates that the climate during Maastrichtian time was warm temperate at high and middle latitudes, and subtropical south of 40°N. Precipitation was relatively high (about 700–800 mm) and evenly distributed over the year. The annual range of temperatures was similar to that of modern maritime climates, but the latitudinal gradient was lower than at present. At high latitudes cold-month mean temperatures were about 3–4°C and probably never dropped below 0°C for extended periods. It seems that these comparatively mild winter temperatures in polar regions were a result of the heating of these areas by warm oceanic upwelling.

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Geological Society, London, Special Publications

Climates: Past and Present

Malcolm B. Hart
Malcolm B. Hart
Department of Geological Sciences, University of Plymouth, UK
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Geological Society of London
Volume
181
ISBN electronic:
9781862394292
Publication date:
January 01, 2000

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