Sinker logs are a thing - logs that were felled a century or more ago and have been at the bottom of a river, or in a bog, or what have you. They are old growth trees - some started growing before Columbus came across the ocean, felled in the 1800s or 1900s and which sunk for a variety of reasons.
Because they are old growth, they have a desirable grain and sell for obscene prices to people who want to make furniture or musical instruments or whatever. So yeah, wood can survive a long time when submerged.
They’ve been doing it for 300 million years and they’re still doing it. However, it’s only under special conditions that they go onto form fossil fuels. Most of them will have biodegraded and the carbon dioxide is released in the atmosphere and reused.
Coal, before it becomes compressed over time, starts off as peat bogs. Peat bogs are an excellent way to store carbon, so there has been a big push to stop peat farming.
Maybe Minnesota will have both of these extremes, some years.
I certainly won’t get the latter, and where I am (cool coastal breeze) it hardly gets above 100. So, maybe it will hit 100 more often. Now, when that seawater rises above 70 or so, yeah, we might feel more of it.
