Quaternary Environments Overview. Scale of Variation.
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Transcript of Quaternary Environments Overview. Scale of Variation.
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Quaternary EnvironmentsOverview
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Scale of VariationScale of Variation
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Energy BalanceEnergy Balance
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Milancovich CyclesMilancovich Cycles
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Paleomagnetism
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http://www-istp.gsfc.nasa.gov/Education/Intro.html; Illustration by Steele Hill
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Ice Cores
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Marine Sediments
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Foramnifera, , Diatoms, Coccoliths, and Dinoflagellates
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Packrat Midden
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Lake Coring
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Macrofossil Seeds
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Phytolith Morphology
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Pollen Analysis
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Isochrones of Vegetation Migration
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Dendrochronology
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J.M.W Turner, England: Richmond Hill, on the Prince Regent’s Birthday, 1819
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1889 George Roskruge’s surveying party standing above Monkey Spring
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1962 Growth of shrubs and grasses including exotics Bermuda grass and Watercress
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1994 Plants have continued to encroach on the site with Velvet mesquite, one-seed Juniper, Gooding willow, and Fremont cottonwood being common
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View of a Hurricane through satellite imagery
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Paleoclimate Models
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Worldwide Megafaunal Extinctions
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Fig. 1-1 p. 2
World Population
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North America by Night
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Human Disturbance
Tropic of Capricorn
Equator
Predominantly naturalPartially disturbed
Human dominated
AntarcticCircle
Tropic ofCancer
ArcticCircle
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