https://cir.cenieh.es/handle/20.500.12136/42 2026-07-24T22:47:51Z 2026-07-24T22:47:51Z D'Arcangelo, Serena Martín Hernández, Fátima Parés, Josep María Álvaro Gallo, Ana Ortega Martínez, Ana Isabel García-Medrano, Paula Cáceres, Isabel https://cir.cenieh.es/handle/20.500.12136/3314 2026-03-13T12:17:46Z 2024-10-01T00:00:00Z

Title: A Multi-Proxy Environmental Reconstruction of the Covacha de los Zarpazos in Galería Site (Atapuerca, Spain) Authors: D'Arcangelo, Serena; Martín Hernández, Fátima; Parés, Josep María; Álvaro Gallo, Ana; Ortega Martínez, Ana Isabel; García-Medrano, Paula; Cáceres, Isabel Abstract: Magnetic properties of iron oxides provide invaluable data for environmental reconstruction during sediment deposition. Encouraged by the results of our previous studies in the near Gran Dolina site, we investigate the GI waterlain facies sediments that fill Galer{\'\i}a Complex cave (Sierra de Atapuerca, Spain), in particular the Covacha de los Zarpazos cave considering two vertical profiles at different walls and comparing them with two profiles previously analysed. For the first time in this cave, we propose a correlation among these two walls based on the low field susceptibility values. An environmental reconstruction is proposed based on the pedogenesis and weathering processes, and water activity influencing the composition, concentration and grain size of magnetic minerals. In order to have a more comprehensive interpretation, elemental geochemistry was also analysed. The results allow to identify three different sections with the alternation of environmental characteristics.

2024-10-01T00:00:00Z Campaña Lozano, Isidoro Benito-Calvo, Alfonso Pérez-González, Alfredo Ortega Martínez, Ana Isabel Álvaro Gallo, Ana Miguens Rodríguez, Leticia Iglesias Cibanal, Javier Bermúdez de Castro, José María Carbonell, Eudald https://cir.cenieh.es/handle/20.500.12136/3038 2024-02-12T14:57:42Z 2023-11-01T00:00:00Z

Title: Reconstructing depositional environments through cave interior facies: The case of Galería Complex (Sierra de Atapuerca, Spain) Authors: Campaña Lozano, Isidoro; Benito-Calvo, Alfonso; Pérez-González, Alfredo; Ortega Martínez, Ana Isabel; Álvaro Gallo, Ana; Miguens Rodríguez, Leticia; Iglesias Cibanal, Javier; Bermúdez de Castro, José María; Carbonell, Eudald Abstract: This work showed that cave sediments are useful for geomorphologic studies and for reconstructing depositional environments. While the cave entrance facies have been extensively studied for their relationship with the fossil and archaeological record, the cave interior facies have received much less attention, although they can provide much information on the geomorphological evolution of the karst. This work presents the stratigraphic and sedimentological study of a section >6 m thick and 10 m long of cave interior sediments of Galería Complex (Sierra de Atapuerca, Spain). Galería Complex is a cavity infill of the Sierra de Atapuerca (Spain), composed of three sections filled by at least 30 m of Pleistocene sediments. This sequence is divided into 5 lithostratigraphic units named from bottom to top: GI – GV. GI unit is 19 m thick of interior facies in the base of the Galería Complex, divided into two sub-unit, GIa and GIb, by the Matuyama-Bruhnes paleomagnetic boundary. GI unit shows an issue with the chronology since has uncoherent between TT-OSL and ESR/U-series and paleomagnetism dates. This work has been done by combining field observation with laboratory sedimentary analysis to characterize the texture and structure of the sediments. Based on these studies, 12 layers and 9 sedimentary facies have been identified. The facies associations indicate a clear separation between GIa and GIb sub-units. GIa sub-unit is dominated by epiphreatic conditions and represents continuous relativity sedimentation during the Early Pleistocene; meanwhile, GIb shows important erosion events and facies with reworked materials that indicate vadose conditions during the Middle Pleistocene. This environmental change is related to the geomorphological evolution of the Arlanzón River. In addition, soft-sediment deformation structures have been described, including faults and low-angle folds. An important leaching process has been identified by the presence of phosphates that could explain the underestimated ages obtained in other works.

2023-11-01T00:00:00Z Campaña Lozano, Isidoro Benito-Calvo, Alfonso Pérez-González, Alfredo Álvaro Gallo, Ana Miguens Rodríguez, Leticia Iglesias Cibanal, Javier Bermúdez de Castro, José María Carbonell, Eudald https://cir.cenieh.es/handle/20.500.12136/2820 2023-12-05T02:04:08Z 2022-12-01T00:00:00Z

Title: Revision of TD1 and TD2 stratigraphic sequence of Gran Dolina cave (Sierra de Atapuerca, Spain) Authors: Campaña Lozano, Isidoro; Benito-Calvo, Alfonso; Pérez-González, Alfredo; Álvaro Gallo, Ana; Miguens Rodríguez, Leticia; Iglesias Cibanal, Javier; Bermúdez de Castro, José María; Carbonell, Eudald Abstract: Gran Dolina is a cavity infilled by at least 25 m of Pleistocene sediments divided into 12 lithostratigraphic units and 19 sedimentary facies. These sedimentary facies have been divided into allochthonous facies, defined as sediment inputs from the outside, and autochthonous facies, defined as sediments generated within the karst; but this division has been challenged in recent works. In this study, TD1 and TD2 units of Gran Dolina have been detailed studied and the use of autochthonous facies has been assessed. For that purpose, we have studied the stratigraphic excavation profile, combining field observation with laboratory sedimentary analysis (sieving, laser diffraction, and XRD) to characterize the texture and structure of the sediments. Based on these studies, a total of 8 sedimentary facies have been identified. Consequently, TD1 unit has been separated into two sub-units and 13 layers, while the TD2 unit has been divided into three sub-units. The facies associations indicate a succession of phreatic and vadose phases that would define together epiphreatic conditions inside the cave, related to the transition between Arlanzón valley terraces T3 and T4. Interior facies (and entrance facies for allochthonous facies) is proposed to define Gran Dolina's sediments since the facies analyses indicate transport by underground flows.

2022-12-01T00:00:00Z Díaz‐Acha, Yael Campeny, Marc Casas, Lluís Di Febo, Roberta Ibañez-Insa, Jordi Jawhari, Tariq Bosch, Josep Borrell, Ferran Jorge-Villar, Susana E. Greneche, Jean-Marc Tauler, Esperança Melgarejo, Joan Carles https://cir.cenieh.es/handle/20.500.12136/2672 2024-02-19T14:36:45Z 2022-03-01T00:00:00Z

Title: Colours of Gemmy Phosphates from the Gavà Neolithic Mines (Catalonia, Spain): Origin and Archaeological Significance Authors: Díaz‐Acha, Yael; Campeny, Marc; Casas, Lluís; Di Febo, Roberta; Ibañez-Insa, Jordi; Jawhari, Tariq; Bosch, Josep; Borrell, Ferran; Jorge-Villar, Susana E.; Greneche, Jean-Marc; Tauler, Esperança; Melgarejo, Joan Carles Abstract: In the Neolithic Gavà mines, variscite and turquoise were exploited for ornaments manufacturing, although some prospective pits and tunnels were dug on other similar greenish minerals such as smectite or kandite. A 3D study of the distribution of mineral phases allows us to determine the parameters involved in variscite colours. Methods are comprised of quantitative colourimetry, thin section petrography, SEM-BSE-EDS, EMPA, XRD, Raman spectroscopy, and 57Fe Mössbauer spectrometry. Mapping of the mines indicates that colour is not directly dependent on depth. Although variscite from Gavà is poor in Cr3+ and V+3 compared with gemmy variscite from other localities, the deep green samples content has the highest values of Cr3+. In the case of cryptocrystalline mixtures with jarosite, phosphosiderite, or goethite, variscite tends to acquire a greenish brown to olivaceous hue. If white minerals such as quartz, kandite, crandallite, or alunite are involved in the mixtures, variscite and turquoise colours become paler.

2022-03-01T00:00:00Z