Assistant Professor, Department of Earth
I am an experimental petrologist. I'm particularly interested in the origin,
incorporation, storage and processing of volatile elements in terrestrial
planets. My students are investigating the use of non-traditional stable
isotopes as tracers of mantle processes, the stability of nitrogen-bearing
phases at upper and lower mantle pressures, the hydrogen content of
nominally anhydrous minerals in sub-continental lithosphere and in
extraterrestrial objects, and the effects of composition and temperature on
the structure of silicate glass.
In my lab we use end-loaded piston cylinders for experiments at pressures up
to 3.5 GPa. We also have facilities for preparing experimental samples for
infrared and secondary ion mass spectroscopy, and high temperature furnaces
for glass making and for controlled-atmosphere experiments.
At Western we have a range of high-pressure experimental facilities that
span the entire pressure range of the Earth's interior, from crust to core.
Crustal pressure experiments are done in Dr Bob Linnen's cold-seal lab, Dr
Rick Secco's lab houses the largest capacity multi-anvil press in North
America, together with tetrahedral and Walker-style multi-anvil devices, and
Dr Sean Shieh has a laser-heated diamond cell facility for experiments at
even greater pressure.
For an up to date list of my publications, use one of the following
If the button doesn't work, here's the link
to my ResearcherID; the Google
Scholar version is usually more up to date.
I teach undergraduate courses in metamorphic petrology and the origin and
geology of the solar system. I also occasionally teach thermodynamics and
phase diagrams in igneous petrology, and sometimes give guest lectures in
mineralogy. I run a short course in planetary science for graduate
students, and a seminar series for graduate students in the collaborative
Earth and planetary science program at Western.
A few of my teaching tools can be found here.
Other things I do
I maintain code used for data acquisition, for data reduction and analysis
of spectroscopic data, and to perform other useful tasks.
Most of my code for Igor Pro is hosted at igorexchange.com
(user name: tony). In addition, a couple of online tools are linked below.
By popular demand, I've brought the water
fugacity calculator here from its former home. Here's a very compact python
version for your fugacity-calculating pleasure.
And here's the molar weight calculator.
Last revised: 2017