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