the department of geology
seminar series 2022

seminar presented by:
dr. tobias stephan
guest postdoctoral scholar
department of geoscience, university of calgary

what stresses the canadian cordillera? - a statistical analysis of the
first-order intraplate stress field of western canada

tuesday, october 18, 2022
10:30 am – cb 3031

the department of geology
seminar series 2022

guest speaker:
moses angombe
phd candidate, department of earth and planetary sciences
mcgill university

friday, september 16, 2022
10:00 am
in cb 3031

_{abstract:  developing tools for estimating paleo-pore fluid pressure in faults is essential for understanding how the properties of fault rocks evolve during an earthquake cycle and over the lifetime of a fault. high pore pressure represents a weakening mechanism needed for fault slip, earthquake triggering, heat transport, and fluid / chemical cycling. it is also potentially a key to understanding the mechanical behavior of low-angle thrusts, which remains a great paradox in tectonics and fault mechanics. the muddy mountain thrust in southern nevada, usa, is part of the regional mid-late cretaceous sevier orogenic front and exposes evidence of paleoseismic slip. the thrust juxtaposed an imbricated paleozoic carbonate sequence above jurassic and cretaceous sandstones, molasse, and conglomerates. the thrust displays injections of gouge and breccia from the fault core into fractures in the hanging wall rocks. crosscutting relations between principal slip surfaces and injections indicate multiple seismic pressurization events. field observation and microstructure of the injection materials revealed the presence of poorly sorted assorted remnant clasts of quartz, microcline, foliated gouge, breccia, and cement. the mixed lithology clasts were sourced from the fault core below and pushed upward into the hanging wall injection site, possibly implying rapid emplacement through the injection of materials by thermal pressurization and fluidization during seismic slip. microstructural observations of cement and solution features will be used to infer the chemical characteristics and constrain density estimates and clast carrying capacity of the driving fluid. these observations will be used as boundary conditions to model the velocity and pressure of the driving fluid and the pore pressures required to drive injections. the modelled velocities and pressures will be related to co-seismic stress conditions associated with large earthquakes in the continental fold and thrust settings. our model attempts to understand the pore pressure limits on the fault, which we will compare to the pressurization required to propel thrust slip on the low angle fault and potentially provide the first quantitative observational constraints of paleo-pore pressure from a low angle thrust.}

the department of geology
seminar series 2022-2023

guest speaker:

mostafa khorshidi, p.eng.,
nwmo (nuclear waste management organization)

"update on site characterization activities"

tuesday, september 13, 2022
10:30 am
in cb 3031

 a  summary of the nwmo siting process, drilling program, and 2d seismic project in the ongoing site characterization of ignace with regards to the potential for a nuclear waste repository” 

department of geology 

thesis defense presented by

bailey drover

 "a record of transpression-related brittle-ductile deformation and associated alteration
within granitoid plutons of the wabigoon subprovince, superior province"

friday, may 27, 2022
zoom event - 1:00 pm

to participate email the contact as listed below for the zoom link/login & password
shay@lakeheadu.ca
kcarey@lakeheadu.ca

the centre of excellence for sustainable mining & exploration (cesme)
presents guest speaker:

frank racicot
consulting geologist and prospector

"low tech prospecting tips for prospectors and geologists"

friday, march 25, 2022
zoom event
2:30 pm

the department of geology
seminar series 2021-2022

graduate thesis proposal presentations
by:

sevgi goksen
assessing graphite precipitation mechanism of the albany deposit

sergio bautista
geochemistry and paragenesis of magnetite bearing gabbros at the lac des iles mine, northern ontario

friday, march 4, 2022
2:30 pm
zoom event

 (to participate email the contact as listed below for the zoom link/login & password)

shay@lakeheadu.ca
or 
kcarey@lakeheadu.ca

the department of geology
seminar series 2021-2022

graduate thesis proposal presentations
by:

tianna groeneveld
geochemistry and mineralization of the archean titan (roaring river) intrusion

connor caglioti
geochemistry and mineralization of the mesoproterozoic escape intrusion

thursday, december 2, 2021
10:30 am
zoom event

 _{(to participate email the contact as listed below for the zoom link/login & password)}

shay@lakeheadu.ca
or 
kcarey@lakeheadu.ca

geology department seminar

geological association of canada 2021 hutchison virtual lecture tour
presents:

dr. vincent van hinsberg (mcgill university)
2021 w.w. hutchison medalist

sending probes into the deep earth to understand subduction

tuesday, november 30, 2021
10:30 am zoom event

^{join zoom meeting
(to participate email the contact as listed below for the zoom link/login & password)
 contact:
dr. mary louise hill
mlhill@lakeheadu.ca}