Universität Bayreuth
Experimental Constraints on Silicate Perovskite Forming Reactions and Elastic Properties: Geophysical Implications for Chemical Heterogeneity in the Deep Mantle
Abstract
dc:description.abstractThree experimental investigations have been performed in order to understand how the composition of the mantle may influence mineral stability and elastic properties and how these may influence seismic properties of the deep mantle. The phase relations of calcium perovskite have been studied in high pressure and temperature experiments to examine the effect of its formation on seismic discontinuity features at 520 km depth in the mantle. The effect of varying composition on the compressibility of magnesium silicate perovskite has been examined in order to understand the geophysical consequences of chemical heterogeneity in the lower mantle. Calorimetric measurements of the pyrope-majorite garnet solid solution have been made to provide essential thermodynamic data for modeling the formation reactions of both magnesium and calcium silicate perovskite.
Degree
thesis:*- Level thesis:degree_level
- thesis.doctoral
- Grantor dc:publisher
- Universität Bayreuth
- Year
- 2008
Author and committee
dc:creator, dc:contributor.*- Author dc:creator
-
- Ashima, Saikia
- Contributors dc:contributor
-
- Rubie, David C. Prof
Identifiers
dc:identifier.*- Repository record source_url
- https://epub.uni-bayreuth.de/id/eprint/617/
- OAI identifier oai:identifier
- oai:epub.uni-bayreuth.de:617