Stephen Michalchuk

@stephenmichalchuk.com

394 Followers 97 Following

🇨🇦 Post Doctoral Research Geologist #pseudotachylyte #mylonite #shearzone #garnet #plagioclase #geothermal https://www.stephenmichalchuk.com IG: @powphotog

EBSD orientation map of plagioclase
PhD thesis flip through
The boogie auditorium with François Renard
Crossed polarized light micrograph of a pseudotachylyte
Purple and pink sunrise over the University of Oslo
Thin section of a quartz mylonite cross polarized light with lambda plate in. Grain size is variable, with some super fine grained material mixed with micas, and coarse grained ribbons that are annealed and recrystallized.
Plane polarized light microscopy image of a corona of garnet enveloping (a weird) biotite within an anorthosite from Lofoten, Norway
Top left is a microtomography volume of a pseudotachylyte (PST) and the adjacent damage zone. Porosity is concentrated in the PST, while the damage zone is efficiently healed. Highwr amounts of porosity is around garnet due to densification during garnet recrystallization growth.
Coronas of garnet around foxy brown biotite and coronas of garnet & OPx around olivine in the damage zone of a pseudotachylyte vein (black very fine grained vein with suspended clasts at the bottom of the view)