Locked away in geologically stable layers in a time of cataclysmic climate change. Maybe there's something to that and the oceans will acidify too much for bac

Locked away in geologically stable layers in a time of cataclysmic climate change. Maybe there's something to that and the oceans will acidify too much for bacteria to evolve to eat the plastic, and there will forever be a "plastic layer" in the geological record to mark this era. I was thinking more that the plastics in question are free-floating in a soluble medium and thus ripe for digestion by an opportunistic microbe.