An Evaluation of the Long-Term Stagnancy of Porewater in the Neogene Sedimentary Rocks in Northern Japan
Figure 12
Comparison of and : is defined as the He concentration without the effect of mantle He, as calculated by (10); is defined as the He concentration obtained by the multiplication of the accumulation rate of 4He by radiogenic effects (calculated in Section 5.2.2) and time (1.0 million years).
