Transcript American Megafauna

Colorado Plateau - Geography
Arizona Geography
GCU 221
Colorado Plateau - Geography
• Northwestern Colorado Plateau:
Landforms: Grand Canyon goodies
Humans: Route 66 and Kingman
• Northern Colorado Plateau:
Landforms: San Francisco volcanic field, and more GC
Humans: Flagstaff and Williams
• Northeastern Colorado Plateau:
Landforms: Monument Valley and Grand Falls
Humans: Navajo, Hopi (covered earlier)
Northwestern Colorado Plateau
Landforms - Western Grand Canyon
• Hurricane Fault – most active in Arizona
• Vulcan’s Throne – Volcanism and lava
dams in the Grand Canyon, 3 Ma to the
present
• Paleo-channels - that came from the
Mogollon Highlands
• Havasu Falls – continuous deposition of
calcium carbonate in the water causes
agradation and eventually waterfalls.
• Surprise Canyon Landslide – Largest in
Arizona
Humans Route 66 – Established 1926
Humans Kingman, AZ founded in 1882
History
• Founded part of an
early railroad,
Beale’s Springs
• Andy Devine - Actor
• Mojave County Seat
and big Hospital
Northern Colorado Plateau
Landforms – Northern Colorado Plateau
• San Francisco Volcanic Field – An active
volcanic field responsible for the Peaks,
SP Crater, Sunset Crater, from 6 million
years to present.
• Grand Falls – 150,000 years ago, a lava
flow from Merriam Crater poured into
the Little Colorado River, damming and
re-directing the river to flow around,
forming the water fall.
Humans Flagstaff, AZ founded in 1876
History
• Ponderosa Flag Pole
• Lowell Observatory
• Coconino County
Seat, Northern
Arizona University,
biggest hospital on
the Colorado Plateau
Humans Williams, AZ founded in 1876
History
• Originally a big
lumber town
• Route 66 stop
• Bypassed by I-40 and
saved by the Grand
Canyon Railway
Northeastern Colorado Plateau
Humans Navajo and Hopi
Landforms – Northeastern Colorado Plateau
• Monument Valley – Retreat of a layered
rocks as scarps, at different rates and
different resistance, generate the cool
buttes.
• Marble Canyon Reconstruction –
Moenkopi / Shinarump Scarp retreat,
and drainage reconstruction
Things to know:
• Northwestern Colorado Plateau:
Landforms: Grand Canyon goodies
Humans: Route 66 and Kingman
• Northern Colorado Plateau:
Landforms: San Francisco volcanic field, and more GC
Humans: Flagstaff and Williams
• Northeastern Colorado Plateau:
Landforms: Monument Valley and Grand Falls
Humans: Navajo, Hopi (covered earlier)
Help: Ask Dr. Douglass
Transition Zone - Geography
Arizona Geography
GCU 221
Transition Zone- Geography
• Western Transition Zone:
Landforms: Big Sandy River Highway 93
Vegetation: Joshua Trees Highway 93
Humans: Bagdad and Bullhead City
• Central Transition Zone:
Landforms: Agua Fria N.M. and Fossil Creek
Humans: Strawberry and Arcosanti
• Eastern Transition Zone:
Landforms: Black River and Big Lake
Humans: Alpine and Morenci
Things to know:
• Western Transition Zone:
Landforms: Big Sandy River Highway 93
Vegetation: Joshua Trees Highway 93
Humans: Bagdad and Bullhead City
• Central Transition Zone:
Landforms: Agua Fria N.M. and Fossil Creek
Humans: Strawberry and Arcosanti
• Eastern Transition Zone:
Landforms: Black River and Big Lake
Humans: Alpine and Morenci
Basin and Range- Geography
Arizona Geography
GCU 221
Basin and Range - Geography
• Western Basin and Range:
Landforms: Pinacate and Kofa Mountains
Humans: Yuma and Lake Havasu
• Central Basin and Range:
Landforms: Organ Pipe and Eagle Tail Mountains
Humans: Ajo and Gila Bend (Butterfield Trail)
• Eastern Basin and Range:
Landforms: Chiricahua and Catalina Mountains
Humans: Bisbee and Sierra Vista
Basin and Range - Geography
• Western Basin and Range:
Landforms: Pinacate and Kofa Mountains
Humans: Yuma and Lake Havasu
• Central Basin and Range:
Landforms: Organ Pipe and Eagle Tail Mountains
Humans: Ajo and Gila Bend (Butterfield Trail)
• Eastern Basin and Range:
Landforms: Chiricahua and Catalina Mountains
Humans: Bisbee and Sierra Vista