000151542 001__ 151542
000151542 005__ 20250313085758.0
000151542 0247_ $$2doi$$a10.2110/JSR.2020.113
000151542 0248_ $$2sideral$$a126494
000151542 037__ $$aART-2021-126494
000151542 041__ $$aeng
000151542 100__ $$aRodriguez-Lopez J.P.
000151542 245__ $$aExtreme-flood-related peat blocks: An anthropocene analogue to ancient coalforming environments
000151542 260__ $$c2021
000151542 5203_ $$aCoal clasts associated with extreme floods are prone to survive and maintain their large size, contrary to the general belief that distance from the parent peat layer reduces the size of transported clasts. Contrary to apparent logic, moreover, a second flood event favors the preservation potential of such soft organic clasts, this being the minimal fragmentation. An Anthropocene example from an urban park in Spain demonstrates that peat clasts up to 1 m long can survive due to flotation for a distance of almost a hundred meters and are well preserved and stabilized thanks to a second flood. These peat blocks were generated by catastrophic flooding of urban peatlands along the Ebro River (city of Zaragoza) during exceptional rainfalls in Iberia. The water flow from the Ebro River flooded the peatland at the surface of the meander, ripping up peat clasts from a shear or detachment level formed by an indurated level characterized by rounded quartzite pebbles, which acted as a hydrological discontinuity surface. Extensive evidence of the paleoflow direction is provided by oriented crushed reeds and the widespread occurrence of imbricated and thrusted peat blocks on the eroded and exposed peatland and in the main urban accumulation areas. To be specific, peat blocks and minor clasts accumulated in four areas associated with different modes of transport and topographic steps. From proximal to distal these are as follows: i) a proximal rim including thrusted peat blocks on the eroded peatland, ii) two intermediate accumulation zones associated with topographic steps in the park, characterized by peat-clast imbrication, iii) gravity-fall peat clasts deposited in an artificial channel in the park, and iv) peat rafts of more than 1 m in diameter scattered over the surface of the park (at a distance of 90 m from the eroded peatland). Copyright © 2021, SEPM.
000151542 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E32-20R$$9info:eu-repo/grantAgreement/ES/MICINN/PID2019-108705GB-I00
000151542 540__ $$9info:eu-repo/semantics/closedAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000151542 590__ $$a2.481$$b2021
000151542 591__ $$aGEOLOGY$$b12 / 49 = 0.245$$c2021$$dQ1$$eT1
000151542 592__ $$a0.773$$b2021
000151542 593__ $$aGeology$$c2021$$dQ1
000151542 594__ $$a4.0$$b2021
000151542 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000151542 700__ $$0(orcid)0000-0003-2963-8422$$aSoria de Miguel, A.R.$$uUniversidad de Zaragoza
000151542 700__ $$0(orcid)0000-0002-9130-117X$$aLiesa Carrera, C.L.$$uUniversidad de Zaragoza
000151542 7102_ $$12000$$2280$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Estratigrafía
000151542 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna
000151542 773__ $$g91, 3 (2021), 243-261$$pJ. sediment. res.$$tJournal of Sedimentary Research$$x1527-1404
000151542 8564_ $$s9663489$$uhttps://zaguan.unizar.es/record/151542/files/texto_completo.pdf$$yVersión publicada
000151542 8564_ $$s3038013$$uhttps://zaguan.unizar.es/record/151542/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000151542 909CO $$ooai:zaguan.unizar.es:151542$$particulos$$pdriver
000151542 951__ $$a2025-03-13-08:39:39
000151542 980__ $$aARTICLE