Someone recently told me that we should expect a massive earthquake in Michigan because we haven’t had one for millions of years.
I gave up on trying to explain the stability of the region. There is an ancient rift valley under lake superior but the southern part of the state sits in a vast stone bowl that can be seen running north northeast from Greenbay, along the southern edge of the upper peninsula, curving down southward to create Georgian bay in Ontario.
Geology is pretty cool and I wish more people paid some attention to it.