Quartz filled concretion. Section through a concretion showing veins of quartz (silicon dioxide, white lines) that has been deposited inside dilation

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Quartz filled concretion. Section through a concretion showing veins of quartz (silicon dioxide, white lines) that has been deposited inside dilation cracks in what was probably originally a soft, water-containing mud-ball. The cracks were formed when the mud ball dried out to be transformed over time into a mudstone concretion. This specimen measures 110mm in diameter.

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Size: 4954px × 3583px
Photo credit: © DIRK WIERSMA/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: background, concretion, crack, cracks, crystal, crystals, cut, cut-outs, cutout, cutouts, deposit, deposits, dilation, dioxide, earth, fossil, fossilized, fossillised, geographical, geography, geological, geology, internal, mineral, mineralogy, minerals, mud-ball, mudstone, quartz, quartz-filled, rock, science, section, silica, silicon, stone, vein, veins, white