Notes

Slide Show

Outline

1	Wind Processes and Desert Landscapes
2	Arid and Semiarid Regions
3	The Topography of Arid Lands Sparse Vegetation Running Water in Waterless Regions The Work of Wind Ergs, Regs, and Hamadas Flat areas
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6	Fluvial Processes Impermeable Rocks or Permeable Sediments
7	Flash Floods Fast collection of water at valley floor High Q (discharge)
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12	Desert Landforms
13	Dry Stream Beds Wash – arroyo - wadi Sediments - Alluvium Ephemeral/Intermittent
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15	Arroyo
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17	Playa – Dry Lake
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19	Alluvial Fan
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23	Death Valley
24	Inselbergs/Bornhardts Erosion-Resistant Rock
25	Inselberg
26	Bornhardt – rounded inselburg
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28	The Work of Wind Eolian Erosion/Transportation Eolian Depositional Landforms Loess Deposits
29	The Work of Wind
30	Ventifacts Wind abrasion
31	Yardang Streamlined by wind
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33	Sand Transport
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35	Aeolian Erosion Sand Transport
36	Sandy Regions of the World
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38	Sand Ripples
39	Sediment Transport by Wind
40	Formation of Cross Bedding
41	Dune Cross Section
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45	Major Dune Forms Wind direction & sand supply
46	Desert Dunes Barchan Sand starved Constant direction Seif Two dominant wind directions Common outside USA
47	Barchan Dune
48	Seif
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50	Star Dunes Sandy Giants of Desert
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52	Lithified Cross Bedding
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54	Dust Over the Red Sea
55	Loess Regions of the World Fine grain – lacks stratification From deserts or glaciers
56	"Soil component" Soil component
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59	Loess Deposits
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61	Erg Sand Sea Sahara Marzūq
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63	Blowout / Deflation Hollow
64	Oasis Deflation down to groundwater
65	Reg Stony Desert Deflation
66	Desert Pavement
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69	Hamada Rock Surface – Exposed Bedrock Can be similar to Reg but not from deflation Term not as common in usage in USA
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72	Differential Weathering
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82	Basin-and-Range Landscape
83	Basin and Range
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87	Zion National Park B Climate Colorado Plateau Primarily Sandstone Base of shale Cap of Limestone
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