Figure 3 | Scientific Reports

Figure 3

From: Enhanced terrestrial Fe(II) mobilization identified through a novel mechanism of microbially driven cave formation in Fe(III)-rich rocks

Figure 3

Light photography (a) of a hand sample taken from the wall of an IFC compared to a computed tomography (CT) slice through the same sample (b), with the surface oriented to the cave passage indicated. The images demonstrate the presence of BIF clasts within the canga, cementation of material on the cave face of the sample, and loss of structural goethite and increasing porosity deeper into the wall.

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