EART 3 Geology of National Parks 10504

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EART3 Field Trip Natural Bridges Beach March 6,
2004
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EART3 Field Trip Natural Bridges Beach March 6,
2004
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EART 3- Geology of National Parks 3/8/04

• OUTLINE
• Basin and Range Province
• Deserts
• Death Valley NP
• Joshua Tree NP
• CONCEPTS
• Tensional forces
• Desert landforms

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Basin and Range Province
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Basin and Range Province

• Normal faulted mountain ranges alternating with
  sediment filled valleys
• Desert processes and landscapes

Normal Fault
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25 of worlds landmass is desert
-40
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Alluvial Fan- Fan shaped pile of sediment
accumulating at the base of a desert
mountain Bajada- Apron of sediment formed by the
coalescence of alluvial fans Pediment- Broad,
flat or sloping surface that develops as desert
mountains are eroded and filled in by
bajadas Playa- lake beds that are periodically
flooded and evaporated
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Alluvial Fan
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Bajada
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Black Mountains- east side of Death Valley
Panamint Mountains-west side of Death Valley
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Wineglass Canyon
-282 ft
Telescope Peak 11,000 ft
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Playa
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Desert Pavement
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Wineglass Canyon
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Fault Scarp
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Wineglass Canyon
-282 ft
Telescope Peak 11,000 ft
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Basin and Range Province
San Andreas Fault
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Pinto Mountain Fault