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Hydrogen in the Nominally Anhydrous Phases and Possible Hydrous Phases in the Lower Mantle


Abstract The transport of hydrogen to the Earth’s deep interior remains uncertain. The upper mantle minerals have very low hydrogen solubilities (hundreds of ppm). The hydrogen storage capability in the transition zone minerals (2 wt%) is high compared to those of the upper mantle. The hydrogen storage in the lower mantle is not well known. The main minerals in the lower mantle bridgmanite and ferropericlase have very low hydrogen storage capacities (less than 20 ppm). In order to further understand the hydrogen storage in the lower mantle, a series of experiments had been conducted to simulate the environment similar to the Earth’s mantle. The experiments with hydrous Mg2SiO4 ringwoodite (Rw) show that it converts to crystalline dense hydrous s... (more)
Created Date 2019
Contributor Chen, Huawei (Author) / Shim, Sang-Heon (Advisor) / Garnero, Edward (Committee member) / Bose, Maitrayee (Committee member) / Li, Mingming (Committee member) / Leinenweber, Kurt (Committee member) / Arizona State University (Publisher)
Subject Geophysics / Geology / Hydrogen / Hydrous Phases / Mantle / Nominally Anhydrous
Type Doctoral Dissertation
Extent 153 pages
Language English
Copyright
Note Doctoral Dissertation Natural Science 2019
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS


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Description Dissertation/Thesis