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Sub-Atlantic
Sub-Atlantic A colder, wetter climatic phase which followed more continental Sub-Boreal times. The change from Sub-Boreal to Sub-Atlantic conditions in Britain is roughly coincident with the transition from Bronze to Iron Age cultures. The Sub-Atlantic marks a period of renewed peat growth on bog surfaces that in late Sub-Boreal times were sufficiently dry and humified to support heath vegetation, e.g. Calluna vulgaris (ling, heather). This renewed peat growth gives a major recurrence surface, the Grenz horizon, which in Britain defines the Zone VIIb/Zone VIII (Sub-Boreal/Sub-Atlantic) boundary of the standard pollen stratigraphy. See pollen analysis; and pollen zone.
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Cite this article
AILSA ALLABY and MICHAEL ALLABY. "Sub-Atlantic." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>. AILSA ALLABY and MICHAEL ALLABY. "Sub-Atlantic." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-SubAtlantic.html AILSA ALLABY and MICHAEL ALLABY. "Sub-Atlantic." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-SubAtlantic.html |
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sub-Atlantic
sub-Atlantic A colder, wetter climatic phase which followed more continental sub-Boreal times. The change from sub-Boreal to sub-Atlantic conditions in Britain is roughly coincident with the transition from Bronze to Iron Age cultures. The sub-Atlantic marks a period of renewed peat growth on bog surfaces that in late sub-Boreal times were sufficiently dry and humified to support healthy vegetation (e.g. Calluna vulgaris, ling, heather). This renewed peat growth gives a major recurrence surface, the Grenz horizon, which in Britain defines the zone VIIb/zone VIII (sub-Boreal/sub-Atlantic) boundary of the standard pollen stratigraphy (see pollen zone).
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Cite this article
MICHAEL ALLABY. "sub-Atlantic." A Dictionary of Ecology. 2004. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "sub-Atlantic." A Dictionary of Ecology. 2004. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O14-subAtlantic.html MICHAEL ALLABY. "sub-Atlantic." A Dictionary of Ecology. 2004. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-subAtlantic.html |
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sub-Atlantic
sub-Atlantic A colder, wetter climatic phase which followed more continental sub-Boreal times. The change from sub-Boreal to sub-Atlantic conditions in Britain is roughly coincident with the transition from Bronze to Iron Age cultures. The sub-Atlantic marks a period of renewed peat growth on bog surfaces that in late sub-Boreal times were sufficiently dry and humified to support healthy vegetation, e.g. Calluna vulgaris (ling, heather). This renewed peat growth gives a major recurrence surface, the Grenz horizon, which in Britain defines the zone VIIb/zone VIII (sub-Boreal/sub-Atlantic) boundary of the standard pollen stratigraphy (see POLLEN ZONE).
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Cite this article
MICHAEL ALLABY. "sub-Atlantic." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "sub-Atlantic." A Dictionary of Plant Sciences. 1998. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O7-subAtlantic.html MICHAEL ALLABY. "sub-Atlantic." A Dictionary of Plant Sciences. 1998. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O7-subAtlantic.html |
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