2026-06-27T23:13:55Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/524952024-07-23T17:06:50Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Caja Rodríguez, Miguel Ángel
author
Marfil Pérez, Rafaela
author
Lago San José, Marceliano
author
Salas, Ramón
2023-06-20T12:46:42Z
2023-06-20T12:46:42Z
2004
1576-5172
MInisterio de Educación y Ciencia. España
https://hdl.handle.net/20.500.14352/52495
http://www.sociedadgeologica.es/publicaciones_geotemas.html
A geochemical characterization (major, trace and rare earth element abundances) of the Lower Cretaceous sandstones of the Maestrat Basin has been carried out, in order to discriminate samples from different formations and assess their provenance and weathering conditions. All the studied sandstones are arkoses and subarkoses characterized by a multi-elemental diagram showing enrichment in Rb, U, La, Nd, Zr and Y, and depletion in Ba, Nb, Sr, P and Ti, which is typical of calc-alkaline igneous rocks. This pattern suggests an input from igneous rocks directly from the source area or by recycling. The low chemical index alteration values do not reflect intense weathering conditions in the source region. Sandstones from the studied formations were discriminated using a Rb versus Y+Nb plot. This plot shows a progressive Rb enrichment and Y+Nb depletion toward the uppermost sandstones (Camarillas Tm). Rb versus K20 indicates a good positive correlation, which is consistent with the observed Kfeldspar abundance increase towards the Camarillas sandstones. The higher SREE and Y+Nb ratios in Mora Em. sandstones suggest a slight difference in provenance, which can be explained by the contribution of Paleozoic shales and metasediments.
spa
Caracterización geoquímica de las areniscas del Cretácico inferior de la cuenca del Maestrazgo, Cadena Ibérica Oriental: Nueva aportación al estudio de la procedencia
journal article
URL
https://docta.ucm.es/bitstreams/48635773-de4a-4434-904a-bbd6937a0063/download
File
MD5
40c8efa8b4f81024cd6ef14b9cf69de3
686760
application/pdf
Páginas desdeGeo_temas_6_1sge-15.pdf
URL
https://docta.ucm.es/bitstreams/94d1f0a6-569f-4fad-9a44-da31499c08a0/download
File
MD5
4f0110b5539b92361f5a1509b17f5cda
14717
text/plain
Páginas desdeGeo_temas_6_1sge-15.pdf.txt