An Evaluation of the Long-Term Stagnancy of Porewater in the Neogene Sedimentary Rocks in Northern Japan

Figure 4

Depth profile of Cl⁻ concentration ³⁶Cl/Cl in the Koetoi and Wakkanai formations. Depth: the boundary of the Koetoi and Wakkanai formations is indicated as 0 m, and the relative depth from the boundary is indicated by the vertical axis.