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  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Late-Glacial to Early Holocene Climate Changes from a Central Appalachians Pollen and Macrofossil Record

Late-Glacial to Early Holocene Climate Changes from a Central Appalachians Pollen and Macrofossil Record

Nasa, National Aeronautics and Space Adm

Paperback

Astronomy & Space

Currently unavailable to order

ISBN10: 1729305474
ISBN13: 9781729305478
Publisher: Independently Published
Published: Oct 26 2018
Pages: 46
Weight: 0.29
Height: 0.10 Width: 8.50 Depth: 11.00
Language: English
A Late-glacial to early Holocene record of pollen, plant macrofossils and charcoal, based on two cores, is presented for Browns Pond in the central Appalachians of Virginia. An AMS radiocarbon chronology defines the timing of moist and cold excursions, superimposed upon the overall warming trend from 14,200 to 7,500 C-14 yr B.P. This site shows cold, moist conditions from approximately 14,200 to 12,700 C-14 yr B.P., with warming at 12,730, 11,280 and 10,050 C-14 yr B.P. A decrease in deciduous broad-leaved tree taxa and Pinus strobus (haploxylon) pollen, simultaneous with a re-expansion of Abies denotes a brief, cold reversal from 12,260 to 12,200 C-14 yr B.P. A second cold reversal, inferred from increases in montane conifers, is centered at 7,500 C-14 yr B.P. The cold reversals at Browns Pond may be synchronous with climate change in Greenland, and northwestern Europe. Warming at 11,280 C-14 yr B.P. shows the complexity of regional climate responses during the Younger Dryas chronozone. Kneller, Margaret and Peteet, Dorothy Goddard Space Flight Center NSF ATM-94-17160...

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