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Figure 1

From: Alteration of rocks by endolithic organisms is one of the pathways for the beginning of soils on Earth

Figure 1

Structure of endolithic system on gneiss as seen by µCT: (a) – vertical cross-section, (b) – horizontal cross-section, inverted false colors, the fissures and pores appear white, (c) – horizontal cross-section, pocket with biofilms and fine earth formed in situ, false colors, the fissures and pores appear black, (d) – horizontal cross-section, visualization of weathering zones with Fe-(hydr)oxides, clay minerals, both in close vicinities with biofilms. Qz – quartz, Fs – feldspars, Bt – minerals of biotite series, Hb – hornblende. Images b and c were deliberately processed in different color palletes to achieve better visualization of the fine details.

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