Kilbourne K. H. auteur aut IRD Weil-Accardo Jennifer auteur aut IRD Feuillet N. auteur aut IRD Deschamps Pierre auteur aut IRD Xu Y. Y. auteur aut IRD Shen C. C. auteur aut IRD Sun H. L. auteur aut IRD Halley R. B. auteur aut IRD Atwater B. F. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Uranium-series dates from coral boulders constrain the timing of a medieval tsunami from the Puerto Rico Trench. Previously reported evidence for this tsunami includes hundreds of coral boulders that came to rest hundreds of meters inland on Anegada, British Virgin Islands. New U-series dates on these coral boulders provide limiting dates for the tsunami. The narrowest limits were by dating interior bands of a coral that retains the hemispherical form of a living coral colony, and which include adjustments for the number of annual density band couplets between the dated samples and the boulder exteriors. By those limits, the tsunami dates between 1381 and 1391 CE, and likely occurred during summer or fall. The tsunami is important as the only reported sign that the eastern Puerto Rico Trench has produced a great earthquake. The dating may aid in defining the earthquake source and in communicating tsunami hazards. specialized tsunami overwash U-series dating coral Caribbean ATLANTIQUE PORTO RICO CARAIBE 021 032 020 064 52 19 e2024GL114448 [11 ] 2025 0094-8276 https://www.documentation.ird.fr/hor/fdi:010095361 10.1029/2024gl114448 0094-8276 [F B010095361] https://www.documentation.ird.fr/hor/fdi:010095361 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2025-11/010095361.pdf IRD - Base Horizon / Pleins textes 2025-11-18 2026-01-20 fdi:010095361 fre