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You are browsing the archive for greenstone belts Archives - AGU Blogosphere.

14 September 2018

Friday fold: Ferruginous sediments in Barberton Mountain Land

A trip back to Archean sedimentary rocks in Barberton, South Africa, reveals a few folds on the roadside…

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25 May 2017

Chert-slab conglomerate from the Fig Tree Group, Barberton

Deep in the Archean, things suddenly got violent in the deep water of the Mapepe Formation’s oceanic setting. What was a quiet precipitation of chert suddenly was torn apart and tumbled downslope. Was an earthquake to blame? A bolide impact? This is the result.

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2 May 2016

3D models to spin and twist

More 3D models: digital facsimiles of real rock samples. Check them out and explore! Clinker from the Powder River Basin, Wyoming: [sketchfab id=”afb351be49f04c8eab1acc29a8a2bcfb” start=”0″ spin=”” controls=”0″] Ripple marks from the Rose Hill Formation, West Virginia: [sketchfab id=”6b56924ee2f84dd2821c4cb30e4869f9″ start=”0″ spin=”” controls=”0″] Meta-komatiite from the Red Lake Greenstone Belt, northern Ontario, Canada: [sketchfab id=”53dc4d161c974d7b86f70639062551e0″ start=”0″ spin=”” controls=”0″]

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