https://cir.cenieh.es/handle/20.500.12136/2763 2026-07-24T17:21:22Z 2026-07-24T17:21:22Z Padilla, Santiago Fujioka, Toshiyuki Miguens Rodríguez, Leticia Jiménez Barredo, Fernando Sarró Moreno, María Isabel Parés, Josep María https://cir.cenieh.es/handle/20.500.12136/3442 2026-03-13T12:19:49Z 2024-10-01T00:00:00Z

Title: New cosmogenic nuclide dating laboratory in CENIEH, Spain Authors: Padilla, Santiago; Fujioka, Toshiyuki; Miguens Rodríguez, Leticia; Jiménez Barredo, Fernando; Sarró Moreno, María Isabel; Parés, Josep María Description: Poster sesión presented at AMS-16, Guilin, China, 20-26 october 2024, p. 21

2024-10-01T00:00:00Z Méndez-García, C. G. Rojas-López, G. Solís, C. Padilla, Santiago Chávez, E. Huerta, A. https://cir.cenieh.es/handle/20.500.12136/3264 2026-02-20T08:44:15Z 2024-01-01T00:00:00Z

Title: Characterization of meteoric 10Be in certified reference materials for use in internal control standards Authors: Méndez-García, C. G.; Rojas-López, G.; Solís, C.; Padilla, Santiago; Chávez, E.; Huerta, A. Abstract: In recent decades, interest in the measurement of 10Be has increased due to its relevance in various fields of science. Trace amounts of 10Be produced from meteoric sources require sensitive accelerator mass spectrometry (AMS) measurements and robust sample preparation. The extraction, separation, and preparation of the appropriate oxide form for AMS require extensive and careful laboratory processing and certified reference materials to validate the chemical performance of the protocols used and the calibration of the AMS system in the measurement. In this work, the meteoric 10Be concentrations in two certified reference materials are characterized to establish their suitability as internal control standards for laboratory chemical preparation and AMS measurements of this radioisotope in our laboratory and the whole AMS community. Description: Scheme for separation and extraction of Be. The leaching of the sample is a mixture of those reported by Padilla and Jena; while the radiochemical extraction process is based on what was established by Padilla

2024-01-01T00:00:00Z García-Martínez, Daniel Duval, Mathieu Zhao, Jian-xin Feng, Yuexing Wood, Rachel Huguet Pàmies, Rosa Cifuentes-Alcobendas, Gabriel Palancar, Carlos A. Moya-Maleno, Pedro Reyes https://cir.cenieh.es/handle/20.500.12136/2711 2024-03-18T15:32:14Z 2022-06-01T00:00:00Z

Title: Los Villares locality (Ruidera, Castilla-La Mancha, Spain): a new Middle Pleistocene fossil assemblage from the Southern Iberian Plateau with possible evidence of human activity Authors: García-Martínez, Daniel; Duval, Mathieu; Zhao, Jian-xin; Feng, Yuexing; Wood, Rachel; Huguet Pàmies, Rosa; Cifuentes-Alcobendas, Gabriel; Palancar, Carlos A.; Moya-Maleno, Pedro Reyes Abstract: We present the discovery of a Middle Pleistocene fossil assemblage at Los Villares locality (Ruidera, Ciudad Real, Castilla-La Mancha), which has possible evidence of associated human activity. The potential of the site has been evaluated through multidisciplinary research including taxonomy, anatomy, deep learning, and direct dating of fossil remains. A surface study carried out in 2017, over a very limited area (2 m 2 ) on the slope of one of the Ruidera lakes led to the discovery of more than 50 fossil specimens, including cranial (mainly teeth) and postcranial remains. This rich assemblage is dominated by the remains of Caprinae, although the presence of some small or medium carnivore remains also stands out. The identification of a cut mark, tested with Convolutional Neural Networks, suggests the presence of human activity within the bone assemblage. Several fossils were directly dated using a multi-technique approach involving radiocarbon, U-Th, and ESR methods. The results constrain the fossil assemblage to between 300 ka and 400 ka, positioning Los Villares as one of the first Middle Pleistocene localities identified in the Upper Guadiana basin, on the Southern edge of the Southern Iberian Plateau. These promising initial results show the great potential of the site to contrib-ute to filling a gap of knowledge in the Pleistocene archaeo-paleontological record of the Iberian Peninsula. Nevertheless, we also acknowledge the need for systematic excavations in the future, not only to obtain a better idea of the lateral and stratigraphic extension of the fossil assemblage and its complete taxonomic composition, but also to confirm the human presence at the site.

2022-06-01T00:00:00Z