Supplemental material: <sup>40</sup>Ar/<sup>39</sup>Ar Geochronology of Roman Volcanic Province Tephra in the Tiber River Valley: Age Calibration of Middle Pleistocene Sea-Level Changes Daniel B. Karner 10.1130/9845 https://gsapubs.figshare.com/articles/journal_contribution/Supplemental_material_sup_40_sup_Ar_sup_39_sup_Ar_Geochronology_of_Roman_Volcanic_Province_Tephra_in_the_Tiber_River_Valley_Age_Calibration_of_Middle_Pleistocene_Sea-Level_Changes/12334679 GSA Data Repository Item 9845, GSA Bulletin, Vol. 110, p. 740. File size: 6 p., about 386 K bytes. 1998-01-01 00:00:00 Geoscience