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. 2018 Dec 13;8:17837. doi: 10.1038/s41598-018-36111-x

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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(a) Geomorphologic map and statistics. Three paleosurfaces ranging 11–16, 20–28, and 31–40 m a.s.l., are depicted. The topographic culminations identified in the IMG 1:25.000 maps are reported with triangles of different colors on the 1:10.000 topographic base by Regione Lazio (http://dati.lazio.it/catalog/it/dataset/carta-tecnica-regionale-1991), available under Creative Commons Attribution License (https://creativecommons.org/licens/by/4.0/). Each color is associated with an elevation range defining a paleosurface which, in turn, is established based on the statistical analysis. See text for further explanation. (b) Cross-section showing the three marine terraces recognized in this area: the lower Latina and Minturno complexes (description of the associated deposits by¹⁷ is provided in the text), and the higher Campoverde complex recognized in this study.