A 220 ka palaeoenvironmental reconstruction of the Fuentillejo maar lake record (Central Spain) using biomarker analysis

Ortíz, José E.; Moreno, Laura; Torres, Trinidad de; Salamanca, Juana Vegas; Ruíz-Zapata, Blanca; García-Cortés, Ángel; Galán, L.; Pérez‐González, Alfredo

doi:10.1016/j.orggeochem.2012.11.012

Cited by 62 publications

(19 citation statements)

References 67 publications

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“…However, in the Iberian Peninsula a limited number of long (> 100 kyr) and continuous terrestrial sedimentary records have been described, including Villarquemado (González-Sampériz et al, 2013;García-Prieto, 2015), Carihuela Cave (Fernández et al, 2007), Fuentillejo maar lake (Ortiz et al, 2013) and Padul (Florschütz et al, 1971;Nestares and Torres, 1998).…”

Section: Introductionmentioning

confidence: 99%

Orbital-scale environmental and climatic changes recorded in a new ∼200,000-year-long multiproxy sedimentary record from Padul, southern Iberian Peninsula

Camuera

Jiménez‐Moreno

Ramos‐Román

et al. 2018

Quaternary Science Reviews

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Padul is one of the few wetland sites in southern Europe and the Mediterranean region that exhibits an unusually large temporal span (> 100 kyr) and continuous Quaternary sedimentary record. Previous core-based studies from Padul yielded paleoecological datasets (i.e., pollen and organic geochemistry), but with a poor age control that resulted in rather arbitrary climate inferences. Therefore, precise age control and a multidisciplinary approach is necessary to understand long-term regional environmental and climate change and the associated local response of the Padul wetland environment. Here we present a new long sediment record (Padul-15-05) from this wetland in the southern Iberian Peninsula with the aim of improving the age control of the sedimentary sequence and carrying out up-to-date high-resolution multiproxy analyses. In this study the age control is based on 61 AMS radiocarbon dates for the last ca. 50 kyr BP and on the extent of amino acid racemization (AAR) in mollusc shells extending back ~ 118 kyr BP. No numerical ages are available for the bottom part of the core but the sediment accumulation rates (SAR) and the cyclostratigraphic analysis of the multiproxy data suggest that the core preserves a continuous record of the last ~ 197 kyr (from late MIS 7 to present) with millennial-scale time resolution. Sedimentological (lithology, magnetic susceptibility, XRD, color), geochemical (XRF, TOC, C/N, % carbonate content) and paleontological (pollen, charophytes, gastropods) data show co-varying cyclical paleoenvironmental changes linked to orbital-scale climatic variability. Silicon, magnetic susceptibility (MS) and total organic carbon (TOC) data show periodicities between ~ 26.2-19.6 kyr linked to insolation, which is strongly dominated by precession cycles at this latitude. High values of Si and MS data have been related to high siliciclastic/detrital input from Sierra Nevada range during minima in insolation due to enhanced soil weathering/erosion during regional aridity and lower forest cover recorded by the arboreal pollen, which could also be favored by a minor biogenic productivity. In addition, warm climate conditions during maxima in insolation mostly resulted in negative precipitation/evapotranspiration balance and low lake levels, while cold glacial and stadial periods were mainly characterized by positive precipitation/evapotranspiration balance, and therefore, high lake levels. The improved chronology of the Padul sedimentary sequence along with a multiproxy study permitted us to better relate environmental and vegetation changes to climatic events and to demonstrate how both local (i.e., lake level, sedimentation) and regional (i.e., vegetation) environments responded to orbital-scale climate changes.

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Section: Introductionmentioning

confidence: 99%

Orbital-scale environmental and climatic changes recorded in a new ∼200,000-year-long multiproxy sedimentary record from Padul, southern Iberian Peninsula

Camuera

Jiménez‐Moreno

Ramos‐Román

et al. 2018

Quaternary Science Reviews

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“…The rapidly accumulated and continuous sediment record in Huguangyan Maar Lake provides a perfect laboratory to study the impact of climate variability on the regional vegetation (Ortiz et al . ). Thus, the unique location, good preservation and minimal disturbance of the sediment make Huguangyan Maar Lake an ideal site for investigating climate variations between the late Pleistocene and the Holocene (Liu et al .…”

mentioning

confidence: 97%

Vegetation and climate changes over the last 30 000 years on the Leizhou Peninsula, southern China, inferred from the pollen record of Huguangyan Maar Lake

Meng

Wang

et al. 2017

Boreas

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A pollen record from Huguangyan Maar Lake documents regional palaeovegetation and palaeoclimate changes in southern China over the last 30 000 years. Huguangyan Maar Lake is located close to the South China Sea (SCS) coastline and is influenced by the East Asian Monsoon (EAM). The pollen assemblages show a succession of vegetation and climate changes. During the Last Glaciation, 30–15.8 cal. ka BP, the Huguangyan area was dominated by subtropical evergreen‐deciduous forest with grassland surrounding the lake, indicating a colder and drier climate than today. During 15.8–11 cal. ka BP, the study area experienced several climatic fluctuations. From 11 to 2 cal. ka BP, the climate shifted to warmer and wetter conditions. After the Holocene Optimum in the early Holocene, the temperature and precipitation decreased. The sediment record of the last 2000 years cannot be used to interpret natural palaeoclimate changes due to the intense anthropogenic influences. Overall, however, the Huguangyan pollen archive highlights the rapid responses of subtropical vegetation to insolation changes in southern China.

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“…For example, pollen spectra from the Middle Paleolithic layers 19 to 14 at Bajondillo document changes between steppic and forested landscapes (López-Sáez et al, 2007). Lithological, palynological and geochemical records of the Fuentillejo Maar (Vegas et al, 2010;Ortiz et al, 2013) also suggest major climate driven changes in the lake catchment during the last glacial period involving pulses of dry and cold climatic conditions.…”

Section: The Sitementioning

confidence: 99%

Site formation and chronology of the New Paleolithic Site Sima de Las Palomas de Teba, Southern Spain

Kehl

Burow

Cantalejo³

et al. 2016

Quat. res.

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The newly identified Paleolithic site Sima de Las Palomas de Teba hosts an almost seven-m-thick sediment profile investigated here to elucidate the rock shelter's chronostratigraphy and formation processes. At its base, the sediment sequence contains rich archeological deposits recording intensive occupation by Neanderthals. Luminescence provides a terminus ante quem of 39.4 ± 2.6 ka or 44.9 ± 4.1 ka (OSL) and 51.4 ± 8.4 ka (TL). This occupation ended with a rockfall event followed by accumulation of archeologically sterile sediments. These were covered by sediments containing few Middle Paleolithic artifacts, which either indicate ephemeral occupation by Neanderthals or reworking as suggested by micromorphological features. Above this unit, scattered lithic artifacts of undiagnostic character may represent undefined Paleolithic occupations. Sediment burial ages between about 23.0 ± 1.5 ka (OSL) and 40.5 ± 3.4 ka (pIRIR) provide an Upper Paleolithic chronology for sediments deposited above the rockfall. Finally, a dung-bearing Holocene layer in the uppermost part of the sequence contains a fragment of a human mandible dated to 4032 ± 39 14 C yr BP. Overall, the sequence represents an important new site for studying the end of Neanderthal occupation in southern Spain.

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A 220 ka palaeoenvironmental reconstruction of the Fuentillejo maar lake record (Central Spain) using biomarker analysis

Cited by 62 publications

References 67 publications

Orbital-scale environmental and climatic changes recorded in a new ∼200,000-year-long multiproxy sedimentary record from Padul, southern Iberian Peninsula

Orbital-scale environmental and climatic changes recorded in a new ∼200,000-year-long multiproxy sedimentary record from Padul, southern Iberian Peninsula

Vegetation and climate changes over the last 30 000 years on the Leizhou Peninsula, southern China, inferred from the pollen record of Huguangyan Maar Lake

Site formation and chronology of the New Paleolithic Site Sima de Las Palomas de Teba, Southern Spain

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