 When I was at the Geological Survey of Canada, I had the great fortune of working on a team that was doing really leading-edge work here in Canada and really globally leading-edge work on understanding how plate tectonics worked in the Perkambian period during which the Canadian Shield was formed. And I'd say we made a couple really fundamental discoveries of first-of-the-kind in the world. One of which in an area where I did my PhD working with a geological survey of Canada's scientists called Marc Saint-Vellage. We discovered the oldest oceanic crust on Earth, approximately two billion years old, that was sitting up on top of the continent in northernmost Quebec. Work that we did from there has shown that virtually all the attributes of continental margin and its collision with another continent can be found there. The work continues today, but it was really groundbreaking work and an exciting time to be walking on an area that had never been traversed before, in terms of geological mapping and discovering these things for the first time. I then worked with a team of scientists from across Canada, Geological Survey of Canada, provincial colleagues from Manitoba, Saskatchewan and the University of Researchers in Canada and internationally. And there we looked at the same concepts in the area around Flint, Long and Snow Lake, Manitoba. And we're able to demonstrate another type of ancient plate margin that not only gave rise to the world-class order closets there, but you need geology and we're able to apply some of the techniques used in oil and gas exploration, seismic techniques to image the deep parts of the continental crust and show that they had structural attributes similar to those that are found in active plate margins.