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

Jon Camuera, Gonzalo Jiménez-Moreno, María J. Ramos-Román, Antonio García-Alix, Jaime L. Toney, Scott R Anderson, Francisco Jiménez-Espejo, Darrell S Kaufman, Jordon Bright, Cole Webster, Yurena Yanes, José S. Carrión, Naohiko Ohkouchi, Hisami Suga, Masako Yamame, Yusuke Yokoyama, Francisca Martínez-Ruiz

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

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.

Original languageEnglish (US)
Pages (from-to)91-114
Number of pages24
JournalQuaternary Science Reviews
Volume198
DOIs
StatePublished - Oct 15 2018

Fingerprint

Iberian Peninsula
environmental change
climate change
wetland
lake level
insolation
magnetic susceptibility
solar radiation
wetlands
pollen
sedimentary sequence
lakes
total organic carbon
evapotranspiration
climate
soil weathering
racemization
Charophyta
Mediterranean region
sediments

Keywords

  • Climate
  • Environmental changes
  • Facies
  • Holocene
  • Lake level
  • Padul
  • Pleistocene

ASJC Scopus subject areas

  • Global and Planetary Change
  • Ecology, Evolution, Behavior and Systematics
  • Archaeology
  • Archaeology
  • Geology

Cite this

Orbital-scale environmental and climatic changes recorded in a new ∼200,000-year-long multiproxy sedimentary record from Padul, southern Iberian Peninsula. / Camuera, Jon; Jiménez-Moreno, Gonzalo; Ramos-Román, María J.; García-Alix, Antonio; Toney, Jaime L.; Anderson, Scott R; Jiménez-Espejo, Francisco; Kaufman, Darrell S; Bright, Jordon; Webster, Cole; Yanes, Yurena; Carrión, José S.; Ohkouchi, Naohiko; Suga, Hisami; Yamame, Masako; Yokoyama, Yusuke; Martínez-Ruiz, Francisca.

In: Quaternary Science Reviews, Vol. 198, 15.10.2018, p. 91-114.

Research output: Contribution to journalArticle

Camuera, J, Jiménez-Moreno, G, Ramos-Román, MJ, García-Alix, A, Toney, JL, Anderson, SR, Jiménez-Espejo, F, Kaufman, DS, Bright, J, Webster, C, Yanes, Y, Carrión, JS, Ohkouchi, N, Suga, H, Yamame, M, Yokoyama, Y & Martínez-Ruiz, F 2018, 'Orbital-scale environmental and climatic changes recorded in a new ∼200,000-year-long multiproxy sedimentary record from Padul, southern Iberian Peninsula', Quaternary Science Reviews, vol. 198, pp. 91-114. https://doi.org/10.1016/j.quascirev.2018.08.014
Camuera, Jon ; Jiménez-Moreno, Gonzalo ; Ramos-Román, María J. ; García-Alix, Antonio ; Toney, Jaime L. ; Anderson, Scott R ; Jiménez-Espejo, Francisco ; Kaufman, Darrell S ; Bright, Jordon ; Webster, Cole ; Yanes, Yurena ; Carrión, José S. ; Ohkouchi, Naohiko ; Suga, Hisami ; Yamame, Masako ; Yokoyama, Yusuke ; Martínez-Ruiz, Francisca. / Orbital-scale environmental and climatic changes recorded in a new ∼200,000-year-long multiproxy sedimentary record from Padul, southern Iberian Peninsula. In: Quaternary Science Reviews. 2018 ; Vol. 198. pp. 91-114.
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T1 - Orbital-scale environmental and climatic changes recorded in a new ∼200,000-year-long multiproxy sedimentary record from Padul, southern Iberian Peninsula

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AU - Jiménez-Moreno, Gonzalo

AU - Ramos-Román, María J.

AU - García-Alix, Antonio

AU - Toney, Jaime L.

AU - Anderson, Scott R

AU - Jiménez-Espejo, Francisco

AU - Kaufman, Darrell S

AU - Bright, Jordon

AU - Webster, Cole

AU - Yanes, Yurena

AU - Carrión, José S.

AU - Ohkouchi, Naohiko

AU - Suga, Hisami

AU - Yamame, Masako

AU - Yokoyama, Yusuke

AU - Martínez-Ruiz, Francisca

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