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``,: <br />4"' <br />~, <br />i <br />I:: <br />~~~ <br />~: <br />~, <br /> <br />9 <br />Table 2 <br />Summary of Holocene Climatic Episodes <br />in Eastern North America' <br />Dateb Episode Inferred Climate <br />100 BP to Recent Dry or very dry <br />Present <br />400 to Neo-Boreal Generally cooler <br />100 BP <br />850 to Pacific Dry <br />400 BP <br />1260 to Neo-Atlantic Somewhat moister <br />850 BP <br />1680 to Scandic Somewhat moister <br />1260 BP <br />5060 to Sub-Boreal Initially moister condition followed <br />2760 HP by increased desiccation <br />8490 to Atlantic Drier and/or warmer; northward <br />5060 BP expansion <br />9300 to Boreal Gradual warming period; vegetation <br />8490 BP border moving northward and <br /> grasslands expanding eastward <br />10,030 to Sub-Boreal Gradual warming period <br />9300 BP <br />Before Late Glacial Temperatures a few degrees cooler; <br />10,030 BP gradual shift from boreal forests <br /> to grasslands indicating a <br /> drying/and/or warming trend <br />°Source: Wendland (1978) <br />bBP years before present, with a present baseline of AD 1950 <br />