All that nature can never do, part VIII: sedimentary structures
Article published on 8 June 2008

by Irna

A few examples of what Mr. Osmanagic would probably call "artifacts...

"Mud-cracks"

Southwestern Virginia, USA
Source
Lac du Salagou, Hérault, France
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St. George, Utah, USA
Photo Calvin J. Hamilton - Source
Klingenthal, Vosges, France
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Newfoundland, Canada
Photo John W.F. Waldron - Source

"Flute casts", "groove marks", "tool marks" and "load casts"

Load cast, Cheshmehanarak, Iran
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Flute cast, Nord-Est Iran
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Flute cast, Kadkan, Iran
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Flute cast, Tafilalt, Maroc
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Groove mark, Surenenpass, Suisse
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Groove mark, Rudawka Rymanowska, Pologne
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Tool mark, Liscomb Island, Canada
Photo John W.F. Waldron - Source
Flute casts, Gaspe Peninsula, Quebec, Canada
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Flute casts, Gaspe Peninsula, Quebec, Canada
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Flute casts, Salton Trough, southern California
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"Molds", imprints from concretions or crystals

Nova Scotia, Canada
Photo John W.F. Waldron - Source
Empreinte de cristaux dans du grès, France
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Jaizkibel, pays basque, Espagne
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