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Dr. Greg Yaxley
Research Fellow
Research School of Earth Sciences
The Australian National University
Canberra 0200
AUSTRALIA
T: +61 2 6125 8334
F: +61 2 6125 4835
E: Greg.Yaxley@anu.edu.au
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PRISE Commercial and Collaborative Activities
- Major and trace element analysis and interpretation of
diamond indicator minerals (garnet, Cr-diopside, Cr-spinel, zircon,
perovskite etc).
More information about our capabilities is available here.
- Laser Ablation ICPMS - Trace element determinations of
geological and other materials using LA-ICPMS.
- Electronprobe microanalysis - Major and minor element
analysis of mineral phases and glass.
- High pressure experimentation - mineralogical or petrological
investigations of high pressure phase relations can be conducted using
the range of solid media high pressure apparatuses available at RSES.
Research Interests
- Development and application of the synchrotron-based
techniques XANES for determination of Fe 3+ /?Fe in garnet - application
to lithospheric oxygen fugacity and diamond stability.
Read more here.
- Melting of heterogeneous mantle - Compositional heterogeneities
are introduced into the convecting mantle by recycling of mafic materials
at convergent margins. Based on geochemical and fluid dynamic evidence
they may have a role in petrogenesis of many lavas including MORBs,
OIBs and flood basalts. But how does such heterogeneous mantle actually
melt, and what is the nature of the liquids produced?
- Melt inclusions in primitive lavas - Tiny samples of
melt trapped in phenocrysts in primitive magmas may be near primary
melts, providing important information about mantle melting and magma
sources. It is also possible that they reflect shallower processes
occuring in the plumbing systems of some magma systems. Our recent
investigations suggest the latter is important in the case of the Baffin
Island picrites.
- Petrogenesis of carbonatites and kimberlites
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