Fig. 5From: Original composition and formation process of slab-derived deep brine from Kashio mineral spring in central JapanRelationship between δD and δ18O in water samples from the Kashio B well. The data is plotted in two categories: within 30 min from the start of the commercial pumping (or when the pumping was not conducted) (open circles) and after > 1.5 h of pumping (filled circles). Variation of the former is wider than that of the latterBack to article page