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5.<$rst><$n>. The Earth’s Deep Water Cycle

Water is as important to the lithosphere as it is to the biosphere because it has dramatic effects on melting and mechanical behavior. The proportion of H2O in the Earth is estimated at about 0.025% by weight (Bodnar et al., 2013). Figure 5.<$rst><$n:figure:waterpie> shows the distribution of H2O among various reservoirs; surprisingly, the amount contained in the solid Earth (the geosphere) may be roughly the same as that contained in ...