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A Subsoil Inspection in a Mangrove Habitat Using Electrical Resistivity Tomography66Marine Research of the National Academy of Marine ResearchDOI: 10.29677/MR.202406_4(1).0005Figure 6. In-situ borehole sampling photo.Figure 7. Complete borehole sampling at No. BH-1. A single borehole sampling was carried out at the northern boundary of the mangrove reserve to confirm the corresponding stratigraphic profile and core sampling analysis. A rotary drilling method was used for geological drilling. The borehole sampling depth was set up to 30 meters, using either NQ (a diameter of 47.6 mm) or HQ (a diameter of 63.5 mm) type sampling at No. BH-1 (Figure 6). The complete sampling area was continuously drilled downwards from the in-situ surface.
