Evolución paleoambiental a partir de los registros sedimentarios continentales de áreas de montaña del centro de la Península Ibérica
Paleoenvironments encapsulate climate characteristics and the hydrological, geological, biological & anthropic factors of the past. In a mountain range, paleoenvironments and the landscape overlap, ecosystems and relief hybridizes. The human footprint is relatively recent given the age of the bi...
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| Tipo de recurso: | tesis doctoral |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Castilla-La Mancha |
| Repositorio: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/44188 |
| Acceso en línea: | https://hdl.handle.net/10578/44188 |
| Access Level: | acceso abierto |
| Palabra clave: | Climatología Geología |
| Sumario: | Paleoenvironments encapsulate climate characteristics and the hydrological, geological, biological & anthropic factors of the past. In a mountain range, paleoenvironments and the landscape overlap, ecosystems and relief hybridizes. The human footprint is relatively recent given the age of the biome in mountain areas, and it is challenging to perceve it. In mostly of the studied mountain areas were affected by the growth of Pleistocene glaciers producing vast sediment-covered areas. Here morphostratigraphy produced by former glacial activity become proxy sources. For instance, those form the North of the Iberian Peninsula shows existing similarities about the intra-montane glacial basins infill, and may reflects a common glacial evolution during the last glacial cycle. The last glacial cycle, glacier expansion started as early as MIS 5d in the Mediterranean region, followed by a notably abrupt cooling in MIS 4 that lasted no more than about ~10 ka, in contrast with the ~16 ka of MIS 2, within which the Last Glacial Maximum (LGM) phase took place centred at 22.1 ± 4.3 ka. Noticeable from the Pyrenees was a last maximum ice extent (LMIE) predating the LGM from northern ice sheets, a pioneering European mountain area underlining this asymmetry. Mainly based on Cosmogenic Radionuclides Exposure (CRE) techniques, the western Central System of the Iberian Peninsula (ICS) chronology belongs to MIS 2 glacial period. The Maximum Ice Extension (local MIE), assigned to both MIS2 (around 26 ka BP) or late MIS3 (around 35 ka BP). The later glacial stages of retreat-advancement-stabilization, ended around Termination I (17/15 ka); and deglaciation ending around 11-10 ka; however, a neo-glacial phase could happened during the mid-Holocene. Because a MIS 2 glaciation remains within the age range of 14C techniques, the palaeoenvironmental study of sedimentary sequences embracing MIS 1 and MIS 2 may then common within the ICS, and benefits of a solid chronology of the geomorphological framework as its the case for Navamuño depression (ND) on the western side of the ICS, el Cervunal mid-moraine core complex (CMCC) and las Lagunillas on the inner part of the ICS, the Serrota on the northern part of the Gredos massif, the Laguna Chica peatbog (LCP) on the central-eastern side of the ICS, and hydro-dynamic peatland of Calderuelas (HC) on the eastern side of the ICS |
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