Member Since 2005
Michael J. Walter
Director, Carnegie Institution for Science
AGU Research
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The Onset of Carbonate Melt Formation and Connectivity in the Earth’s Upper Mantle
AGU 2024
volcanology, geochemistry and petrology | 12 december 2024
Emmanuel Codillo, Anne Pommier, Ming Hao, Michael ...
The presence and distribution of low-degree carbonate melts in the mantle can influence its geochemical and geophysical characteristics. These melts a...
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Inclusions in Diamonds Trace the Volatile-Induced Onset of Subducted Slab Mantle Melting at the Top of the Lower Mantle
AGU 2024
volcanology, geochemistry and petrology | 11 december 2024
Michael J. Walter, Steven B. Shirey, Peng Ni, Evan...
The compositions of silicate and oxide inclusions in many diamonds from the lower mantle are consistent with derivation in subducted, melt-depleted ma...
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H in Al-bearing stishovite and post-stishovite: substitution mechanism and quantification
AGU 2024
mineral and rock physics | 10 december 2024
Giacomo Criniti, George D. Cody, Jianhua Wang, Tim...
Nominally anhydrous minerals (NAMs) can store ppm to wt.% levels of H2O in their crystal structures as hydroxyl groups (OH) through lattice defects. H...
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Revisiting saturation gradient chemical diffusion: a thermodynamically-consistent numerical and experimental approach
AGU 2024
mineral and rock physics | 10 december 2024
Cian R. Wilson, Ming Hao, Anne Pommier, Emma Bullo...
The integration of laboratory experiments, transport models, and thermodynamics is a powerful method for inferring the physical and chemical propertie...
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Experimental Investigation of the Stability of Talc in Subduction Zones using Electrical Measurements Under Pressure and Temperature
AGU 2024
study of earth's deep interior | 10 december 2024
Emmanuel Codillo, Ming Hao, Kamirah Billups, Micha...
The thermal structure of subduction zones is fundamental to our understanding of mass transfer and chemical interactions that characterize slab seismi...
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Measurements of electrical conductivity of iron at Earth core conditions
AGU 2024
study of earth's deep interior | 09 december 2024
Zachary M. Geballe, Jing Yang, Vasilije V Dobrosa...
Earths core cooling rate is controlled by thermal conduction from the core into the mantle. One crucial piece of knowledge for modeling this process i...
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Hydration of the mantle transition zone during magma ocean solidification
AGU 2024
study of earth's deep interior | 09 december 2024
Longjian Xie, Michael J. Walter, Tomoo Katsura, Fa...
The mantle transition zone has a high water storage capacity and has been proposed to be hydrous (Ohtani, 2021). One mechanism for hydrating the mantl...
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Electrical Conductivity and Sound Velocities of Talc Under High Pressure and High Temperature Conditions and Application to the Subducting Cocos Plate
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
19 november 2024
Ming Hao, Nicholas Backhouse, Emmanuel Codillo, An...
Talc is expected to be an important water carrier in Earth's upper mantle, and understanding its electrical and seismic properties under high press...