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27 Cards in this Set
- Front
- Back
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Red Sea
E. African Rift Valley |
Active Divergent boundary
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Circum-Pacific
Alpine-Himalayan |
Cenozoic Orogenic Activity, 2 major mtn bldg events
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Circum-Pacific
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Cenozoic suduction zone, volcanism
Mtn building, continues now |
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Alpine-Himalayan
Alps, Atlas, Andes, Himalayas |
active convergent doundary, Africa collides w/ Eurasia, India collision.
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Hawaiian Archipelago
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Hot-spot formed during cenozoic. shield volcano
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NA Cordillera
-Laramide Orogeny |
Major thrust of the Rockies
Inland, vertical uplift, shallow subduction. Normal faulting |
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NA Cordillera
-Vertical Uplift/Shallow Subd. |
must be shallow to form mtn on the interior of the continent
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NA Cordillera
-Grand Tetons, Yellowstone |
Gt from normal faulting
YS modern hot spot |
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Farallon – San Andreas
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subuction zone to transform fault
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Basin and Range
-Normal Faulting, Minor Volcanism |
Normal faulting, Horst/Graben
Hign mtns, Valley of Fires NM |
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Colorado Plateau
-Stability, Uplift, Erosion |
Broad stable platform of Cenozoic, mesozoic sediments
wind erosion dominant in this era |
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Grand Canyon, Shiprock
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Colorado plateau, Colo river crosscuts preC basement. entrenched river.
Shiprock-Basalt (minor volcanism) remnants of miocene volcano |
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Colorado Plateau
-Minor volcanism |
Some bigger than MtSt Helens, up until 500kya
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Interior Lowlands
-Sedimentation |
Basin for sediments shed off of Appal/Rockies. Miss river drainage
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Interior Lowlands
-Devil’s Tower |
furthest subduction inertoir 1000m NE Wyoming, minor volcanism, columnar jointing
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Gulf Coastal Plain
-Sedimentation -Clastic |
Clastics-Recent and Cenozoic SS&SH, Gulf coast, oil, thick sediments
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Gulf Coastal Plain
-CaCO3 |
-CaClO3:limestone shallow marine, FL. No river to transport, 6000' of LS
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Columbia Plateau
-Basalt Flows – PNW |
Basalt flows from Miocene
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Pleistocene Glaciation
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Continental glaciation, cyclic patterns,
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Luis Agassiz
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Harvard-Swiss mathmatician found evidence of glaciation over europe
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Matterhorn
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Formed by glaciation
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Erratics
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Found displaced all over terrain
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End Moraines
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Linear ridge of glacial till that marked the end of the glacier
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Striations
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Striations cut into PreC Sheild by glacier
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Wave-cut terraces
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Recording of sea levels of the past.
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Drowned River Valleys
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Esuarty, combo of fresh/salt water
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Glaciation Causes
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Orbital Shape Changes
Wobbling axis Distance, equinox change Sunspot |
