Tom Gill alerted us to this study, saying “I’ve been a geology nerd for fifty-plus years. I was today years old when I learned that a type of rocks exists which is officially named… rauks.” The study is:
“Limestone Sea Stacks (Rauks) Record Past Sea Levels and Rocky Coast Evolution in the Baltic Sea (Gotland and Fårö Islands, Sweden),” Mateusz C. Strzelecki, Filip Duszyński, Sebastian Tyszkowski, and Łukasz Zbucki, Frontiers in Earth Science, 2022.