Ancient amber may contain traces of tsunamis
- Scientists discovered evidence of one or more ancient tsunamis in 115-million-year-old amber deposits from northern Hokkaido, Japan, published on May 15, 2025.
- The discovery followed analysis of deformed amber-rich silica sediments formed during the Early Cretaceous, interpreted as tsunami backwash rapidly transporting tree resin offshore.
- Supporting evidence includes flame structure deformation in amber, large plant debris on the seafloor without erosion, and signs of a contemporaneous landslide possibly triggered by an earthquake.
- Study co-author Aya Kubota emphasized that amber provides a valuable and timely record of sedimentary processes, demonstrating its potential to uncover evidence of ancient tsunamis.
- This research suggests that analyzing amber and terrestrial deep-sea sediments can improve identification of ancient tsunamis, which often remain difficult to distinguish from storms in the fossil record.
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Dinosaur age tsunami revealed from tiny chunks of Japanese amber, study finds
Amber deposits in Japan show unique deformations that suggest trees were swept out to sea during a tsunami about 115 million years ago, giving paleontologists a new way to identify past tsunamis.
·United States
Read Full ArticleAncient amber may contain traces of tsunamis
Amber deposits found in ancient deep-sea sediment may represent one of the oldest records to date of a tsunami, suggests research published in Scientific Reports. The study describes large amber deposits discovered on Hokkaido Island in northern Japan, and proposes that they were likely swept out from a forest to the ocean by one or more tsunamis between 116 and 114 million years ago.
·United Kingdom
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