Determining Mantle Temperature and Composition from Discontinuities
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Higher order thinking skills goals for this activity
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Description of the activity/assignment
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Download teaching materials and tips
- Activity Description/Assignment
#1: "Hotspot" vs Ridge Temperature Activity (Microsoft Word 638kB Feb25 10)
#2: Student Handout for Temperature vs Composition Interpretations (PowerPoint 346kB Feb25 10)
#3: Phase Diagrams (Acrobat (PDF) 274kB Feb25 10)
- Instructors Notes:
For #1 above: Transition Zone Discontinuity Slides (PowerPoint 2.7MB Mar25 10). These slides include an overview of transition zone temperature and methods used to study mantle discontinuities.
For #2 and 3 above: Instructor Notes for Phase Diagram Interpretation (Microsoft Word 39kB Feb25 10). This document outlines the phase diagrams used for the temperature vs composition interpretations and suggests issues to address with students.
- Solution Set:
For #1 above: Excel Key for Temperature Activity (Excel 33kB Feb25 10)
Courtier, A. M., B. Bagley, and J. Revenaugh (2007), Whole mantle discontinuity structure beneath Hawaii, Geophysical Research Letters, 34, L17304, doi:10.1029/2007GL031006.
Katsura, T., et al. (2003), Post-spinel transition in Mg2SiO4 determined by high P-T in situ x-ray diffractometry, Physics of the Earth and Planetary Interiors, 136, 11–24.
Katsura, T., et al. (2004), Olivine-wadsleyite transition in the system (Mg, Fe)2SiO4, Journal of Geophysical Research, 109, B02209, doi:10.1029/2003JB002438.
Lawrence, J.F., Shearer, P.M., 2006. A global study of transition zone thickness using receiver functions. Journal of Geophysical Research 111. doi:10.1029/2005JB003973.
Lawrence, J.F., Shearer, P.M., 2008. Imaging mantle transition zone thickness with SdS-SS finite-frequency sensitivity kernels. Geophysical Journal International, 174:1, 143-158.
Li, X., Kind, R., Priestley, K., Sobolev, S.V., Tilmann, F., Yuan, X., Weber, M., 2000. Mapping the Hawaiian plume conduit with converted seismic waves. Nature 405, 938–941.
Shen, Y., C. J. Wolfe, and S. C. Solomon (2003), Seismological evidence for a mid-mantle discontinuity beneath Hawaii and Iceland, Earth and Planetary Science Letters, 214, 143– 151.