000048725 001__ 48725 000048725 005__ 20240122154813.0 000048725 0247_ $$2doi$$a10.1093/gji/ggw167 000048725 0248_ $$2sideral$$a94803 000048725 037__ $$aART-2016-94803 000048725 041__ $$aeng 000048725 100__ $$0(orcid)0000-0002-1460-1590$$aPueyo Anchuela, Óscar$$uUniversidad de Zaragoza 000048725 245__ $$aGround penetrating radar evaluation of the internal structure of fluvial tufa deposits (Dévanos-Añavieja system, NE Spain): an approach to different scales of heterogeneity 000048725 260__ $$c2016 000048725 5060_ $$aAccess copy available to the general public$$fUnrestricted 000048725 5203_ $$aThe Quaternary Añavieja-Dévanos tufa system is located in the northern sector of the Iberian Chain. It has been previously tackled by means sedimentological studies focused on the available outcrops and some boreholes. They have permitted the proposal of a sedimentary scenario that fits with a pool-barrage fluvial tufa model. However a better knowledge of the characteristics and internal distribution of the usually non-outcropping pool deposits as well as of its relationship with barrage deposits has not been evaluated in detail yet. Palaeoenvironmental studies on tufas are usually biased because tufas are commonly delicate facies exposed to intense erosion during water level fall stages; for this reason outcrops are usually scarce and very often coincide with the most cemented barrage deposits. In order to analyse the internal characteristics of the tufa deposits under study, but also the lateral correlation among different facies, ground penetrating radar (GPR) has been employed both for the evaluation of its applicability in such kind of environments and to improve, if possible, the sedimentary model using geophysical data in sectors without outcrops. A GPR survey including different antennas ranging from 50 to 500 MHz along different sectors and its comparison with natural outcrops has been carried out. GPR results have permitted to deduce clear differences between pool and barrage deposits and to recognise its internal structure and geometrical relationships. The survey also permitted an approach to different scales of heterogeneities in the radarfacies evaluation by using distinct antennas and therefore, reaching different resolutions and penetrations. The resulting integration from different antennas allows three different attenuant and eight reflective radarfacies to be defined permitting a better approach to the real extension of the pool areas. These results have permitted to decipher the horizontal and vertical facies changes and the identification of a scarcer development of pool deposits than expected in the studied system. 000048725 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/CGL2009-09165-BTE 000048725 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/ 000048725 590__ $$a2.414$$b2016 000048725 591__ $$aGEOCHEMISTRY & GEOPHYSICS$$b34 / 84 = 0.405$$c2016$$dQ2$$eT2 000048725 592__ $$a1.749$$b2016 000048725 593__ $$aGeophysics$$c2016$$dQ1 000048725 593__ $$aGeochemistry and Petrology$$c2016$$dQ1 000048725 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion 000048725 700__ $$0(orcid)0000-0002-8929-9429$$aLuzón, A.$$uUniversidad de Zaragoza 000048725 700__ $$0(orcid)0000-0001-6285-2522$$aPérez, A.$$uUniversidad de Zaragoza 000048725 700__ $$0(orcid)0000-0001-5700-6495$$aMuñoz, A.$$uUniversidad de Zaragoza 000048725 700__ $$0(orcid)0000-0003-0410-6948$$aMayayo, M.J.$$uUniversidad de Zaragoza 000048725 700__ $$0(orcid)0000-0003-3457-1939$$aGil Garbí, H. 000048725 7102_ $$12000$$2428$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Geodinámica Interna 000048725 7102_ $$12000$$2280$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Estratigrafía 000048725 7102_ $$12000$$2120$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Cristalografía Mineralog. 000048725 773__ $$g206, 1 (2016), 557-573$$pGeophys. j. int.$$tGEOPHYSICAL JOURNAL INTERNATIONAL$$x0956-540X 000048725 8564_ $$s2074912$$uhttps://zaguan.unizar.es/record/48725/files/texto_completo.pdf$$yVersión publicada 000048725 8564_ $$s112859$$uhttps://zaguan.unizar.es/record/48725/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada 000048725 909CO $$ooai:zaguan.unizar.es:48725$$particulos$$pdriver 000048725 951__ $$a2024-01-22-15:30:49 000048725 980__ $$aARTICLE