Sound Velocities and Equation of State of Iron-Rich (Mg,Fe)O

• Main Author: Wicks, June Ki
• Format: Others
• Published: 2013
• Online Access: https://thesis.library.caltech.edu/7885/43/wicks_thesis_revised.pdf; https://thesis.library.caltech.edu/7885/1/Wicks_chapter1.pdf; https://thesis.library.caltech.edu/7885/7/Wicks_chapter2.pdf; https://thesis.library.caltech.edu/7885/14/Wicks_chapter3.pdf; https://thesis.library.caltech.edu/7885/15/Wicks_chapter4.pdf; https://thesis.library.caltech.edu/7885/21/Wicks_chapter5.pdf; https://thesis.library.caltech.edu/7885/13/Wicks_bibliography.pdf; https://thesis.library.caltech.edu/7885/34/Wicks_appendix.pdf; Wicks, June Ki (2013) Sound Velocities and Equation of State of Iron-Rich (Mg,Fe)O. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/Z94B2Z98. https://resolver.caltech.edu/CaltechTHESIS:06102013-152154645 <https://resolver.caltech.edu/CaltechTHESIS:06102013-152154645>

Ultralow-velocity zones (ULVZs) are small structures at the base of the mantle characterized by sound velocities up to 30% lower than those of surrounding mantle. In this thesis, we propose that iron-rich (Mg,Fe)O plays a key role in the observed sound velocities, and argue that chemically distinct, iron-enriched structures are consistent with both the low sound velocities and the measured shapes of ULVZs.