Geochemistry, Petrology, Isotope geology, Subduction zones, Cascadia
Office: Phone: 604-822-3764
My current research focusses on the petrogenesis and geochemistry of evolved rocks from the Garibaldi Volcanic Belt.
The Garibaldi Belt is the northern end of the Cascade arc, which extends along the western edge of the North American continent, and it relatively poorly studied thus far in terms of geochemistry. I am currently investigating geochemical variations in Watts Point and Garibaldi Lake, Mt Garibaldi, Mt Cayley and Mt Meager volcanic complexes, extending northwards to Mt Silverthrone. I am also analysing country rocks from the surrounding areas to determine the effects of crustal contamination on arc lavas.
I am using state-of-the-art techniques in isotope and trace element analysis and measuring high-precision Sr, Nd, Hf, and Pb isotopic ratios in arc lavas and country rocks. Specifically I want to know how & when the evolved lavas of the GVB were formed, and the composition of the crustal terranes they were emplaced in.
Ph.D (in progress) - University of British Columbia
Msci Geology – University of Bristol 2011. My thesis focussed on the phase-relations of Mariana-arc sediments during subduction-zone melting.
Martindale, M., Skora, S., Pickles, J., Elliott, T., Blundy, J., Avanzinelli, R., (2013) High pressure phase relations of subducted volcaniclastic sediments from the west pacific and their implications for the geochemistry of Mariana arc magmas, Chemical Geology 342, 94-109.
Martindale, M., Mullen, E, K., Weis, D. Geochemistry of Garibaldi Lake andesites and dacites indicates crustal contamination involved in formation of Northern Cascade arc lava. Upcoming AGU conference 2013.