Thomas Stachel’s main research area is diamond geology. By studying the chemical and physical properties of diamonds (stable isotope composition, nitrogen contents and aggregation levels) and the geochemistry of their mineral inclusions, he seeks to define the conditions under which diamonds are formed and stored within the Earth’s mantle. Because diamonds form over a large depth interval extending from the deep lithosphere (>140 km depth) into the lower mantle (beneath the 660 km discontinuity), they provide a unique means of obtaining direct information on this otherwise inaccessible region of our planet
PhD and MSc projects are currently available in the following fields
- Systematic studies on diamonds and their mineral inclusions from mines in Canada and worldwide
- The evolution of cratonic roots (the origin of cratonic peridotites, eclogites, and pyroxenites).
- The mineralogy and geochemistry of the deep mantle (asthenosphere, transition zone and lower mantle)
Optical techniques in determinative mineralogy with particular emphasis on transmitted-light microscopy and its application to common rock-forming minerals. Mineral associations, textures and elementary ideas on the origin of igneous, metamorphic and sedimentary rocks. Prerequisite: EAS 224. [Faculty of Science]
Concepts in mantle petrology, geochemistry, volcanology, and diamond research that form the basis of modern exploration strategies for kimberlites and diamonds. Prerequisites: EAS 331 and EAS 332, which may be taken concurrently with permission of the instructor. [Faculty of Science]
Concepts in mantle petrology, geochemistry, volcanology, and diamond research that form the basis of modern exploration strategies for kimberlites and diamonds. Classes concurrent with EAS 461. [Faculty of Science]
Hogberg K., Stachel T., Stern R.A.
Lithos. 2016 January; 265
Stachel T., Luth R.W.
Lithos. 2015 January; 220-223
Ickert R.B., Stachel T., Stern R.A., Harris J.W.
Geochemical Perspectives Letters. 2015 January; 1