Tortonian

A Dictionary of Earth Sciences | 1999 | 390 words | Copyright

Tortonian
1. A Late Miocene age, preceded by the Serravallian, followed by the Messinian, and dated at 10.4–6.7 Ma ( Harland et al., 1989).

2. The name of the corresponding European stage, which is roughly contemporaneous with part of the Mohnian (N. America), Waiauan and lower Tongaporutuan (New Zealand), and the lower Mitchellian (Australia). The stratotype is at Tortona, Italy.

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AILSA ALLABY and MICHAEL ALLABY. "Tortonian." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 28 May. 2012 <http://www.encyclopedia.com>.

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AILSA ALLABY and MICHAEL ALLABY. "Tortonian." A Dictionary of Earth Sciences. 1999. Retrieved May 28, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-Tortonian.html

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