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. 2020 Nov 10;11:5678. doi: 10.1038/s41467-020-19416-2

Fig. 4. Deformation of biogenic and geological calcite via uniaxial micro-pillar compression tests.

Fig. 4

SEM images of ad biogenic and eh geological calcite under sequential deformation steps, including the calcite a, e before compression, b, f immediately after yielding, and c after complete fracturing or g significant plastic deformation. White arrows in f show the initial slip-induced deformation in geological calcite. d, h High-magnification SEM images show d microcracking in the A. rigida biogenic calcite, and h slips in the geological calcite, respectively.