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Photo ID: h0wmjtSubject: DunesDescription
Arid Environments; Coastal Dunes; Dune Structures; Eolian Features; Geomorphology; Namib Desert; Ripple MarksStar dunes along ridges of linear dunes. Note that the asymmetric ripples on the dune surface show the direction of wind from left to right. Such dunes occur where a supply of sand is large and the wind typically blows in one direction.
PhotographerLocation
USGS

Credit Line: Courtesy United States Geological Survey		Africa; Namibia; South Africa; Namib Desert
Photo Quality | Large 

Photo ID: h0wmobSubject: DunesDescription
Collapse Structures; Eolian Features; Erosional Feature; Geomorphology; Namib Desert; Sand Dunes; Slump Structures; Soft Sediment DeformationSlump lines occur on the face of a dune as sand accumulates to an oversteepened condition, becomes unstable, and slumps down the steep lee face in drape-like fashion.
PhotographerLocation
USGS

Credit Line: Courtesy United States Geological Survey		Africa; Namibia; South Africa; Namib Desert
Photo Quality | Large 

Photo ID: h0wmqeSubject: DunesDescription
Bedding Plane Irregularities; Eolian Environment; Erosion; Ripple Marks; Sedimentary StructuresThese current ripples show asymmetry in direction the current was flowing. Current ripples occur when wind or water flows consistently in the same general direction.
PhotographerLocation
USGS

Credit Line: Courtesy United States Geological Survey		Africa; Namibia; South Africa; Namib Desert
Photo Quality | Large 

Photo ID: h4vjd1Subject: Sedimentary RocksDescription
Bedding; Mountains; Paleozoic; Petrology; Sedimentary Structures; Sediments; Terrigenous MaterialsTable Mountain in Cape Town, South Africa. Paleozoic sedimentary rocks.

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PhotographerLocation
Bruce Molnia

Credit Line: Copyright © Bruce Molnia, Terra Photographics		Africa; South Africa; Table Mountain
Photo Quality | LargeAvailable for Commercial Use

Photo ID: h5h7xxSubject: Satellite ImageryDescription
Biota; Currents; Eddies; Indian; Marine; Oceanography; Oceans; PacificSatellite view of Cape Town, South Africa showing the ocean around the southern tip of Africa visibly green with abundant phytoplankton populations. The blooms help visualize eddies and other current patterns in the region.
PhotographerLocation
SeaWifs

Credit Line: Copyright © NASA SeaWiFS Project		Africa; South Africa
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hl4gqpSubject: MiningDescription
Archean; Gold; Kaapvaal Craton; Metal ores; Metallurgy; Metasedimentary rocks; Paleoplacers; Refining; Uranium; Witwatersrand BasinGold refinery in South Africa.

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PhotographerLocation
AJ Mandolesi

Credit Line: Copyright © AJ Mandolesi, American Geological Institute		Africa; South Africa; Free State Province; St. Helena Gold Mine
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hl4gsrSubject: MiningDescription
Archean; Gold; Kaapvaal Craton; Metal ores; Metallurgy; Metasedimentary rocks; Paleoplacers; Refining; Uranium; Witwatersrand BasinGold refinery in South Africa.

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PhotographerLocation
AJ Mandolesi

Credit Line: Copyright © AJ Mandolesi, American Geological Institute		Africa; South Africa; Free State Province; St. Helena Gold Mine
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hl4gv4Subject: MiningDescription
Archean; Gold; Kaapvaal Craton; Metal ores; Metallurgy; Metasedimentary rocks; Paleoplacers; Refining; Uranium; Witwatersrand BasinAt a gold refinery.

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PhotographerLocation
AJ Mandolesi

Credit Line: Copyright © AJ Mandolesi, American Geological Institute		Africa; South Africa; Free State Province; St. Helena Gold Mine
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hl4gxlSubject: MiningDescription
Archean; Gold; Kaapvaal Craton; Metal ores; Metallurgy; Metasedimentary rocks; Paleoplacers; Refining; Uranium; Witwatersrand BasinAt a gold refinery in South Africa.

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PhotographerLocation
AJ Mandolesi

Credit Line: Copyright © AJ Mandolesi, American Geological Institute		Africa; South Africa; Free State Province; St. Helena Gold Mine
Photo Quality | LargeAvailable for Commercial Use

Photo ID: hl4h01Subject: MiningDescription
Archean; Gold; Kaapvaal Craton; Metal ores; Metallurgy; Metasedimentary rocks; Paleoplacers; Refining; Uranium; Witwatersrand BasinRefining gold.

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PhotographerLocation
AJ Mandolesi

Credit Line: Copyright © AJ Mandolesi, American Geological Institute		Africa; South Africa; Free State Province; St. Helena Gold Mine
Photo Quality | LargeAvailable for Commercial Use

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