Upper-Pleistocene terrace deposits in Mediterranean climate: geomorphological and source-rock control on mineral and geochemical signatures (Betic Cordillera, SE Spain)

Mineral and chemical composition of alluvial Upper-Pleistocene deposits from the Alto Guadalquivir Basin (SE Spain) were studied as a tool to identify sedimentary and geomorphological processes controlling its formation. Sediments located upstream, in the north-eastern sector of the basin, are rich in dolomite, illite, MgO and KB2BO. Downstream, sediments at the sequence base are enriched in calcite, smectite and CaO, whereas the upper sediments have similar features to those from upstream. Elevated rare-earth elements (REE) values can be related to low carbonate content in the sediments and the increase of silicate material produced and concentrated during soil formation processes in the neighbouring source areas. Two mineralogical and geochemical signatures related to different sediment source areas were identified. Basal levels were deposited during a predominantly erosive initial stage, and are mainly composed of calcite and smectite materials enriched in REE coming from Neogene marls and limestones. Then the deposition of the upper levels of the alluvial sequences, made of dolomite and illitic materials depleted in REE coming from the surrounding Sierra de Cazorla area took place during a less erosive later stage of the fluvial system. Such modification was responsible of the change in the mineralogical and geochemical composition of the alluvial sediments.

Francisco Franco, articulista de incógnito (1945–1960)

Se trata de un análisis pormenorizado de los artículos publicados por Francisco Franco en el periódico Arriba entre los años 1945 y 1960 bajo los seudónimos de Jakim Boor, Hispanicus y Macaulay. Se lleva a cabo su disección en dos grandes categorías: enemigos del Régimen y política, economía y sociedad. Para ello, se toma como ejemplo el propio artículo de Hispanicus titulado “Lo político, lo económico y lo social”. En la primera de las dos grandes categorías se agrupan todos aquellos elementos abstractos -instituciones o ideologías- que Franco consideraba perjudiciales para la España que él gobernaba o que históricamente habían sido hostiles a este país; en la segunda se recogen el comentario sobre política en términos actuales o generales, las situaciones económicas y sociales así como los numerosos fragmentos de Historia de España que el dictador gustaba de incluir en sus colaboraciones periodísticas.