Figure 11. Thin-section micrographs of Microfacies 2 sinter. (1) Branching spicules exhibiting projections (red arrow) on their sides. (2) Close-up of sinter laminae that become increasingly convex upwards. (3) Reinforcement (red arrow) or dampening (green arrow) of microspicules by the deposition of successive laminae. (4) Conical microspicules (red arrows) growing on a lamina (cf. Figure 5.6). New layers of silica (green arrow) have subsequently covered the microspicules. (5) Overview of sinter displaying alternating laminae on the lower portions that are light brown and dark green in colour (green arrow). (6) Close-up of green laminae present on the sinter surface (red arrow) and incorporated into the sinter body (green arrow).