True enough. The whole damn planet is a tectonic zone.
If I were to hazard a guess, I’d say that this area is still rebounding somewhat from the retreat of the ice over 13,000 years ago. Which isn’t that long in geological terms.
Good guess. Ill agree with that before I ever accept the lies of the anti fossil fuel “back to the cave “ bunch. If they want to go back to the cave ,I say get your A$$es moving. Not me. I have 5 cars and trucks and I love them all. I burn fossil fuel with great vigor on my farm. These hippocritic bastard$ fly around , like that damned Michelle Obamma. in a separate 757 from her damned husband and then tell us to go to a cave? No way.
“If I were to hazard a guess, I’d say that this area is still rebounding somewhat from the retreat of the ice over 13,000 years ago.”
You may well be correct. That part of Lake PDO was under a LOT of ice pushing down on the crust. Or, it could be a strike-slip fault like the BIG one at Mt. Borah.
Some of the great Lake Missoula floods flowed through that area. I’m sure that there are a lot of “silent” faults around here.
I live on Missouri Mountain in Sagle which is the granitic northern extension of the Idaho Batholith called the Kaniksu lobe. It felt like a giant helicopter was hovering over the house. Granite transmits Earthquake waves quite efficiently. There were fast vibrations with one big jolt at the end. I used to live in Alaska and I never felt one like this up there.