Interesting.
I've wondered for many decades how many of the roundish, crater-like, lakes and bays scattered around the globe will eventually be recognized as impact craters. I know several already have, like the gigantic one by the Yucatan. Sometimes a volcanic eruption (explosion) can seem similar, but the geology is usually much different.
If one uses Google Earth to just scan the planet, one can be amazed by the numbers of nearly circular depressions with nearly centralized upheavals (seen as an island) indicative of an impact. There are small ones, relatively, like Ungava in Quebec, but I suspect some of the large ones as well, like James Bay off Hudsons Bay, and maybe even Hudsons Bay. I've seen similar things on other continents too. It would be nice to know what really happened, but I doubt it will be proven in my lifetime.