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Fig. 8 | Geothermal Energy

Fig. 8

From: Modeling fracture cementation processes in calcite limestone: a phase-field study

Fig. 8

Comparison of simulated vein morphologies with natural samples. The sketches of natural samples (in gray scale) are drawn from the natural samples of calcite veins in Jurassic limestones from southern England, shown in Fig. 1. a Euhedral, b partially open, c elongate-blocky and d fibrous veins. The wall rock (gray) in the sketch of fibrous vein is not contained in the sample, but it is towards the base of the image. The simulated veins exhibit strong resemblance with the natural samples suggesting a pronounced role of crack opening rates and initial crack width in the formation of different vein textures

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