162020 20260220145913.0 doi 10.1016/j.quascirev.2024.108864 sideral 144651 ART-2024-144651 eng Peña-Monné, José Luis Universidad de Zaragoza (orcid)0000-0003-4067-8222 Block alignments/talus flatiron stages as response to lithological factors and dynamic slope changes in the Central Ebro Basin, NE Spain 2024 Access copy available to the general public Unrestricted The central sector of the Ebro Depression is characterized by an abundance of isolated buttes with relict talus flatiron morphologies and block slopes on the footslopes. This paper presents two unusual study cases where the block slopes are aligned in parallel with the retreating escarpment. The evolutionary process of both buttes started with the formation of talus flatirons and ended with aligned block slopes. This is because both buttes initially had a detrital caprock (Pleistocene pediment) which eroded away to expose a sandstone layer that functioned as a new caprock and so changed the slope dynamics. Seven stages were identified at La Cobeta butte and five at Puyalón butte. The relative ages obtained for stages II and IV enabled an estimation of the escarpment retreat rates. The chronologies of the other stages of block alignments were estimated using Schmidt-hammer rebound values. The estimated age of the stage II (ca. 6588-6222 cal yr BP) coincides with three radiocarbon datings obtained in the deposit. Stage III (ca. 4235-3684 cal yr BP) is contemporary with the 4.2 Bond event. Stage IV (ca. 2800-2500 cal yr BP) coincides with the 2.8 Bond event and is associated with ceramic potsherds and radiocarbon datings. Stages V and VI developed during the Warm Roman period and the Medieval Climatic Anomaly respectively. Lastly, stage VII was formed during the Little Ice Age. The information obtained regarding the morphological arrangement improves our knowledge of the regional evolutionary model where talus flatirons and block slopes develop in a semiarid environment. info:eu-repo/grantAgreement/ES/DGA/H14-23R info:eu-repo/grantAgreement/ES/MICINN/PID2022-138034OA-I00 info:eu-repo/grantAgreement/ES/MICINN/RYC2021-031196-I info:eu-repo/semantics/embargoedAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 3.3 2024 GEOGRAPHY, PHYSICAL 19 / 67 = 0.284 2024 Q2 T1 GEOSCIENCES, MULTIDISCIPLINARY 76 / 258 = 0.295 2024 Q2 T1 1.334 2024 Archeology 2024 Q1 Archeology (arts and humanities) 2024 Q1 Global and Planetary Change 2024 Q1 Geology 2024 Q1 Ecology, Evolution, Behavior and Systematics 2024 Q1 6.2 2024 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Sampietro-Vattuone, María Marta Picazo-Millán, Jesús Universidad de Zaragoza (orcid)0000-0002-4726-819X Alcolea-Gracia, Marta Universidad de Zaragoza (orcid)0000-0003-4280-3971 3006 430 Universidad de Zaragoza Dpto. Geograf. Ordenac.Territ. Área Geografía Física 3000 695 Universidad de Zaragoza Dpto. Ciencias de la Antigüed. Área Prehistoria 340 (2024), 108864 [19 pp.] Quat. sci. rev. QUATERNARY SCIENCE REVIEWS 0277-3791 287541 http://zaguan.unizar.es/record/162020/files/texto_completo.pdf Postprint info:eu-repo/date/embargoEnd/2026-09-01 2414866 http://zaguan.unizar.es/record/162020/files/texto_completo.jpg?subformat=icon icon Postprint info:eu-repo/date/embargoEnd/2026-09-01 oai:zaguan.unizar.es:162020 articulos driver 2026-02-20-14:58:13 ARTICLE