The Publisher regrets that bar markers were unfortunately cut from micrographs in Figures 2 to 5, so the legends of these figures were not understandable by the readers. Please find new legend figures below.
Fig. 2 Cryo-FEG-SEM images of the sediment surface of the core incubated in the light and exposed to the air. Image width is approximately: (a) 0.24 mm; (b) 100 μ m; (c) 80 μ m; (d) 5 μ m; (e) 10 μ m; (f) 7.5 μ m; (g) 25 μ m; (h) 9 μ m. See text for explanations.
Fig. 3 Cryo-FEG-SEM images of the sediment surface of the core incubated in the light and immersed. Image width is approximately: (a) 0.24 mm; (b) 75 μ m; (c) 7 μ m; (d) 5.5 μ m; (e) 8 μ m; (f) 6.5 μ m; (g) 25 μ m; (h) 10 μ m. See text for explanations.
Fig. 4 Cryo-FEG-SEM images of the sediment surface of the core incubated in the dark and exposed to the air. Image width is approximately: (a) 0.27 mm; (b) 140 μ m; (c) 0.24 mm; (d) 10 μ m; (e) 25 μ m; (f) 27 μ m; (g) 6 μ m; (h) 75 μ m. See text for explanations.
Fig. 5 Cryo-FEG-SEM images of the sediment surface of the core incubated in the dark and immersed. Image width is approximately: (a) 0.24 mm; (b) 9 μ m; (c) 43 μ m; (d) 20 μ m; (e) 50 μ m; (f) 75 μ m; (g) 10 μ m; (h) 5 μ m. See text for explanations.