Data from: Ice-VII inclusions in diamonds: evidence for aqueous fluid in Earth’s deep mantle
Tschauner, Oliver et al. (2019), Data from: Ice-VII inclusions in diamonds: evidence for aqueous fluid in Earth’s deep mantle, Dryad, Dataset, https://doi.org/10.5061/dryad.7145v
Water-rich regions in Earth’s deeper mantle are suspected to play a key role in the global water budget and the mobility of heat-generating elements. We show that ice-VII occurs as inclusions in natural diamond and serves as an indicator for such water-rich regions. Ice-VII, the residue of aqueous fluid present during growth of diamond, crystallizes upon ascent of the host diamonds but remains at pressures as high as 24 gigapascals; it is now recognized as a mineral by the International Mineralogical Association. In particular, ice-VII in diamonds points toward fluid-rich locations in the upper transition zone and around the 660-kilometer boundary.
National Science Foundation, Award: EAR-1634415,-1128-799, -1322082, -0318518, and DMR-0080065