12.581 | Spring 2005 | Graduate

Phase Transitions in the Earth's Interior

Assignments

WEEK # STUDENT PRESENTATIONS

1

Phase Transitions in the Earth’s Mantle and Mantle Mineralogy (PDF) (Courtesy of Sandeep Rekhi. Used with permission.)

Topography of the Transition Zone Seismic Discontinuities

2

Iron Partitioning in a Pyrolite Mantle and the Nature of the 410-km Seismic Discontinuity (PDF) (Courtesy of Javier Santillan. Used with permission.)

The Effect of H2O on the 410-kilometer Seismic Discontinuity (PDF) (Courtesy of Huajian Yao. Used with permission.)

3

Testing Plausible Upper-mantle Compositions using Fine-scale Models of the 410-km Discontinuity

Elasticity of Forsterite to 16 GPa and the Composition of the Upper Mantle (PDF) (Courtesy of Sandeep Rekhi. Used with permission.)

4

Seismic Evidence for Olivine Phase Changes at the 410- and 660-kilometer Discontinuities (PDF) (Courtesy of Rosalee Lamm. Used with permission.)

The Post-spinel Transformation in Mg2SiO4 and its Relation to the 660-km Seismic Discontinuity (PDF) (Courtesy of Scott Lundin. Used with permission.)

5

Post-spinel Transition in Mg2SiO4 determined by High P-T in Situ X-ray Diffractometry (PDF) (Courtesy of Javier Santillan. Used with permission.)

Effect of Water on the Spinel-postspinel Transformation in Mg2SiO4 (PDF) (Courtesy of Sandeep Rekhi. Used with permission.)

6

The Effect of Alumina on Phase Transformations at the 660-kilometer Discontinuity from Fe-Mg Partitioning Experiments

Seismic Velocity and Density Jumps across the 410- and 660-kilometer Discontinuities (PDF) (Courtesy of Javier Santillan. Used with permission.)

7

Effects of an Endothermic Phase Transition at 670 km Depth in a Spherical Model of Convection in the Earth’s Mantle

The Interaction of a Subducting Lithospheric Slab with a Chemical or Phase Boundary (PDF) (Courtesy of Huajian Yao. Used with permission.)

8

Seismic Observations of Splitting of the Mid-transition Zone Discontinuity in Earth’s Mantle (PDF) (Courtesy of Rosalee Lamm. Used with permission.)

Tetragonal Structure of CaSiO3 Perovskite above 20 GPa (PDF) (Courtesy of Scott Lundin. Used with permission.)

9

Phase Transformations: Implications for Mantle Structure. In Earth’s Deep Interior: Mineral Physics and Tomography from the Atomic to the Global Scale (PDF)

Strength and Elasticity of SiO2 across the Stishovite-CaCl2-type Structural Phase Boundary (PDF) (Courtesy of Huajian Yao. Used with permission.)

10

Post-perovskite Phase Transition and Mineral Chemistry in the Pyrolitic Lowermost Mantle (PDF) (Courtesy of Rosalee Lamm. Used with permission.)

Ferromagnesian Postperovskite Silicates in the D" Layer of the Earth

11

Evidence for a Ubiquitous Seismic Discontinuity at the Base of the Mantle (PDF) (Courtesy of Scott Lundin. Used with permission.)

The D" Discontinuity and its Implications

12

The Effect of Temperature on the Seismic Anisotropy of the Perovskite and Post-perovskite Polymorphs of MgSiO3 (PDF) (Courtesy of Scott Lundin. Used with permission.)

Electronic Transitions in Perovskite: Possible Nonconvecting Layers in the Lower Mantle (PDF) (Courtesy of Javier Santillan. Used with permission.)

Course Info

As Taught In
Spring 2005
Level
Learning Resource Types
Presentation Assignments with Examples