Figure F26. Depth profiles of Mg/Ca, Sr/Ca, K/Mg and K/Ca, and Li/Mg and Li/Ca in interstitial waters from Hole 1256B. JDF = values observed at Juan de Fuca Ridge flank, representing basement fluid (long dashed lines). SW = seawater values (short dashed lines). Ca/Mg and K/Ca display diffusion between seawater and basement fluids. Sr/Ca values are larger than what is observed at Juan de Fuca Ridge flank, suggesting a strong influence of recrystallization taking place. Li/Mg and Li/Ca ratios are similar to the Ca/Mg profile.