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erathem
erathem The chronostratigraphic unit that is equivalent to the geologic-time unit era. An erathem comprises a number of systems grouped together and takes its name from the corresponding era, e.g. the Mesozoic Erathem would refer to the rocks laid down during the Mesozoic Era. At present it is a little used term.
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AILSA ALLABY and MICHAEL ALLABY. "erathem." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 13 Feb. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "erathem." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (February 13, 2012). http://www.encyclopedia.com/doc/1O13-erathem.html AILSA ALLABY and MICHAEL ALLABY. "erathem." A Dictionary of Earth Sciences. 1999. Retrieved February 13, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-erathem.html |
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erathem
erathem See era.
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Cite this article
MICHAEL ALLABY. "erathem." A Dictionary of Ecology. 2004. Encyclopedia.com. 13 Feb. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "erathem." A Dictionary of Ecology. 2004. Encyclopedia.com. (February 13, 2012). http://www.encyclopedia.com/doc/1O14-erathem.html MICHAEL ALLABY. "erathem." A Dictionary of Ecology. 2004. Retrieved February 13, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-erathem.html |
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