Large amber deposits discovered in northern Japan were likely swept out from a forest to the ocean by one or more tsunamis between 116 and 114 million years ago (Early Cretaceous epoch), according to new research led by the Geological Survey of Japan and Chuo University. Amber deposit from Shimonakagawa Quarry in northern Hokkaido, Japan. Image credit: Kubota et al., doi: 10.1038/s41598-025-96498-2. Traces of ancient tsunamis are hard to identify,...
