Post-Perovskite. The Last Mantle Phase Transition. Geophysical Monograph Series

  • ID: 2489258
  • Book
  • 288 Pages
  • John Wiley and Sons Ltd
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Published by the American Geophysical Union as part of the Geophysical Monograph Series, Volume 174.

Discovery of the perovskite to post–perovskite phase transition in MgSiO3, expected to occur for deep mantle conditions, was first announced in April 2004. This immediately stimulated numerous studies in experimental and theoretical mineral physics, seismology, and geodynamics evaluating the implications of a major lower mantle phase change. A resulting revolution in our understanding of the D″ region in the lowermost mantle is well underway. This monograph presents the multidisciplinary advances to date ensuing from interpreting deep mantle seismological structures and dynamical processes in the context of the experimentally and theoretically determined properties of the post–perovskite phase change; the last silicate phase change likely to occur with increasing pressure in lowermost mantle rocks.

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PrefaceCharles T. Prewitt vii

An Introduction to Post–Perovskite: The Last Mantle Phase TransitionKei Hirose, John Brodholt, Thorne Lay, and David A. Yuen 1

Section I: Mineral Physics (Experimental)

Review of Experimental Studies on Mantle Phase TransitionsTakehiko Yagi 9

Discovery of Post–Perovskite Phase Transition and the Nature of D” LayerKei Hirose 19

Effect of Iron on the Properties of Post–Perovskite SilicateWendy L. Mao, Andrew J. Campbell, Vitali B. Prakapenka, Russell J. Hemley, and Ho–kwang Mao 37

Electronic Transitions and Spin States in the Lower MantleJie Li 47

Lattice–Preferred Orientation of Lower Mantle Materials and Seismic Anisotropy in the D” LayerDaisuke Yamazaki and Shun–ichiro Karato 69

Section II: Mineral Physics (Theoretical)

Thermodynamic Properties and Stability Field of MgSiO3 Post–PerovskiteRenata M. Wentzcovitch, Koichiro Umemoto, Taku Tsuchiya, and Jun Tsuchiya 79

The High–Temperature Elasticity of MgSiO3 Post–PerovskiteStephen Stackhouse and John P. Brodholt 99

Effect of Chemistry on the Physical Properties of Perovskite and Post–PerovskiteRazvan Caracas and Ronald E. Cohen 115

Section III: Seismology

Reconciling the Post–Perovskite Phase With Seismological Observations of Lowermost Mantle StructureThorne Lay and Edward J. Garnero 129

Predicting a Global Perovskite and Post–Perovskite Phase BoundaryDaoyuan Sun, Don Helmberger, Xiaodong Song, and Stephen P. Grand 155

Seismic Anisotropy of Post–Perovskite and the Lowermost MantleJames Wookey and John–Michael Kendall 171

Constraints on the Presence or Absence of Post–Perovskite in the Lowermost Mantle From
Long–Period SeismologyChristine Houser 191

Section IV: Dynamics

Mantle Dynamics and the D″ Layer: Impacts of the Post Perovskite PhaseW.R. Peltier 217

Influence of the Post–Perovskite Transition on Thermal and Thermo–Chemical Mantle ConvectionPaul J. Tackley, Takashi Nakagawa, and John W. Hernlund 229

The Dynamical Influences From Physical Properties in the Lower Mantle and Post–Perovskite

Phase TransitionDavid A. Yuen, Ctirad Matyska, Ondr¡ej C¡adek, and Masanori Kameyama 249

Deformation–Induced Mechanical Instabilities at the Core–Mantle BoundaryNick Petford, Tracy Rushmer, and David A. Yuen 271

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Kei Hirose
John Brodholt
Thorne Lay
David Yuen
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