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. 2018 Dec 20;12(1):8. doi: 10.3390/ma12010008

Figure 2.

Figure 2

V1 and V2 bore samples. Depth of the borehole for the samples: (a) 2.6–3.0 m, (b) 3.0–3.7 m, (c) 3.7–4.2 m, and (d) 5.7–6.0 m.