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Shale
Shale
Sample of drill cuttings of shale while drilling an oil well in Louisiana, United States. Sand grain = 2 mm in diameter
Sample of drill cuttings of shale while drilling an oil well in Louisiana, United States. Sand grain = 2 mm in diameter
Color chart for shale based on oxidation state and organic carbon content
Color chart for shale based on oxidation state and organic carbon content
Shale in Potokgraben, the Karawanks, Austria
Shale in Potokgraben, the Karawanks, Austria
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A thin section of a clast (sand grain), derived from a basalt scoria. Vesicles (air bubbles) can be seen throughout the clast. Plane light above, cros
A thin section of a clast (sand grain), derived from a basalt scoria. Vesicles (air bubbles) can be seen throughout the clast. Plane light above, cross-polarized light below. Scale box is 0.25 mm.
Claystone from Montana
Claystone from Montana
Conglomerate
Conglomerate
Breccia. Notice the angular nature of the large clasts
Breccia. Notice the angular nature of the large clasts