Grand Canyon Jared Appelbaum, Sydney Merkin, Andrew Gottsegen,
Izzy Calis
Slide 2
Geological Origins Colorado River formed the four plateaus
Colorado River formed the four plateaus Dry climate caused
erosional activities Dry climate caused erosional activities
Crystalline rocks formed Crystalline rocks formed Magma rose into
rocks, crystallizing to granite Magma rose into rocks,
crystallizing to granite Sediments and lava were deposited
Sediments and lava were deposited Mountain formation tilted the
rocks Mountain formation tilted the rocks Erosion left on the
tilted rocks on the canyon Erosion left on the tilted rocks on the
canyon Marine movements formed thick layers Marine movements formed
thick layers Widened from dry climate Widened from dry climate Lack
of moisture and storms created rock Lack of moisture and storms
created rock
Slide 3
Natural History Biome- semi-dry desert Biome- semi-dry desert
Climate- Climate- Summer (south rim) : 50-80 degrees F, (north rim)
: cooler, 40-70 degrees F, thunder storms, (inner canyon)
temperatures extremely high Summer (south rim) : 50-80 degrees F,
(north rim) : cooler, 40-70 degrees F, thunder storms, (inner
canyon) temperatures extremely high Winter (south rim): snowy,
foggy, (north rim): extreme snowfall Winter (south rim): snowy,
foggy, (north rim): extreme snowfall Spring/Fall: unpredictable-
snowy, windy, cool, warm days with cool nights Spring/Fall:
unpredictable- snowy, windy, cool, warm days with cool nights
Wildlife Wildlife Variety (bald eagle, golden eagle, mountain lion,
turkey vulture, coyote) Variety (bald eagle, golden eagle, mountain
lion, turkey vulture, coyote)
Slide 4
Endemic, Threatened, Endangered Species Endemic (lives in only
one place in the world) Endemic (lives in only one place in the
world) Sentry milk-vetch plant Sentry milk-vetch plant Agave (from
Greek word noble- imposing structure) (flower) Agave (from Greek
word noble- imposing structure) (flower) Agave utahensis (noble
from Utah)- Greek meaning (flower) Agave utahensis (noble from
Utah)- Greek meaning (flower) Arabis gracilipes (rock cress)
(flower) Arabis gracilipes (rock cress) (flower) Threatened
Threatened Goshawks Goshawks Spotted owls Spotted owls Endangered
Endangered Sentry milk-vetch plant Sentry milk-vetch plant
Slide 5
Human History Obstructed vision Obstructed vision Nitrogen and
sulfur Nitrogen and sulfur Mercury Mercury Biggest canyon, asthenic
value, habitat Biggest canyon, asthenic value, habitat National
Park Service Organic Act National Park Service Organic Act National
Park Service National Park Service Rich, diverse fossil Rich,
diverse fossil Geological, paleontological, archeological and
biological resources Geological, paleontological, archeological and
biological resources Ecosystems Ecosystems
Slide 6
Threats and Cures Threats Air pollution Poor air quality
Elevated ozone layers Uranium mining Cures Reduce the burning of
fossil fuels Anti-Uranium mining groups