000147756 001__ 147756
000147756 005__ 20250114155357.0
000147756 0247_ $$2doi$$a10.1016/j.clay.2020.105598
000147756 0248_ $$2sideral$$a117748
000147756 037__ $$aART-2020-117748
000147756 041__ $$aeng
000147756 100__ $$0(orcid)0000-0002-2169-4561$$aYuste, Alfonso$$uUniversidad de Zaragoza
000147756 245__ $$aPalaeoweathering events recorded on siliciclastic continental deposits (Albian, Lower Cretaceous) in NE Spain
000147756 260__ $$c2020
000147756 5060_ $$aAccess copy available to the general public$$fUnrestricted
000147756 5203_ $$aA set of materials from Teruel (NE Spain), which includes a karst bauxite deposit overlain by an Albian (Lower Cretaceous) kaolin-rich clay succession, has been characterized from a mineralogical, textural and geochemical point of view. The materials under study were examined by X-ray diffraction, optical and electron microscopy and by inductively coupled plasma (ICP) optical emission spectroscopy (OES) and mass spectroscopy (MS). The bauxite is pisolitic and predominantly red and the overlying clay succession is mainly made up of grey claystones. Upper-section of the clay succession is a layer with carbonate nodules and scarce pisolith-like particles that can be distinguished. The studied materials are mainly composed of kaolinite, coupled with gibbsite and accessory boehmite in the bauxite. Gibbsite is also identified in the layer with carbonate nodules. Mineralogical data, kaolinite crystallinity and the Chemical Index of Alteration indicate that the layer with carbonate nodules has recorded a weathering event that was not as intense as the one that led to the in-situ formation of the bauxite deposit. The geochemical behaviour of the analysed elements, especially the REEs, also supports the existence of a weathering event recorded in the layer with carbonate nodules, given the similar trends observed in this layer and in the bauxite. The weathering led to REE + Y leaching, with the HREEs being less mobile than the LREEs, and thus the Albian clay succession, except the layer with carbonate nodules, shows a greater potential as source of these strategic elements. The research has revealed that redox fluctuation made a significant contribution to the distribution of Fe and Ce during bauxitization concerning the precipitation of Fe oxides and accessory minerals such as those of the goyazite-crandallite series.
000147756 536__ $$9info:eu-repo/grantAgreement/ES/DGA/E18-17R$$9info:eu-repo/grantAgreement/ES/MCIU-AEI-FEDER/RTI2018-093419-B-I00
000147756 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc-nd$$uhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
000147756 590__ $$a5.467$$b2020
000147756 591__ $$aMINERALOGY$$b1 / 30 = 0.033$$c2020$$dQ1$$eT1
000147756 591__ $$aCHEMISTRY, PHYSICAL$$b51 / 162 = 0.315$$c2020$$dQ2$$eT1
000147756 591__ $$aMATERIALS SCIENCE, MULTIDISCIPLINARY$$b94 / 333 = 0.282$$c2020$$dQ2$$eT1
000147756 592__ $$a1.062$$b2020
000147756 593__ $$aGeology$$c2020$$dQ1
000147756 593__ $$aGeochemistry and Petrology$$c2020$$dQ1
000147756 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000147756 700__ $$aCamacho, Ivo
000147756 700__ $$0(orcid)0000-0002-4970-6333$$aBauluz, Blanca$$uUniversidad de Zaragoza
000147756 700__ $$0(orcid)0000-0003-0410-6948$$aMayayo, María José$$uUniversidad de Zaragoza
000147756 700__ $$0(orcid)0000-0002-1954-6180$$aLaita, Elisa$$uUniversidad de Zaragoza
000147756 7102_ $$12000$$2120$$aUniversidad de Zaragoza$$bDpto. Ciencias de la Tierra$$cÁrea Cristalografía Mineralog.
000147756 773__ $$g190 (2020), 105598 [16 pp.]$$pAppl. clay sci.$$tApplied Clay Science$$x0169-1317
000147756 8564_ $$s631272$$uhttps://zaguan.unizar.es/record/147756/files/texto_completo.pdf$$yPostprint
000147756 8564_ $$s1663582$$uhttps://zaguan.unizar.es/record/147756/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000147756 909CO $$ooai:zaguan.unizar.es:147756$$particulos$$pdriver
000147756 951__ $$a2025-01-14-15:51:55
000147756 980__ $$aARTICLE