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  • 551.79  (1)
  • AGE; Age, uncertainty maximum/old; Age, uncertainty minimum/young; CDRILL; Core drilling; Dead Sea; Dead Sea Basin, Israel; DEPTH, sediment/rock; DSDDP_5017-1-A; Eastern Mediterranean; ICDP; International Continental Scientific Drilling Program; Lateglacial; microfacies analyses; Paleoclimate; varve chronology  (1)
  • Dead Sea; Eastern Mediterranean; ICDP; International Continental Scientific Drilling Program; Lateglacial; microfacies analyses; Paleoclimate; varve chronology  (1)
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  • 1
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    Unknown
    New insights into lake responses to rapid climate change: the Younger Dryas in Lake Gościąż, central Poland (2021)
    Details
    Publication Date: 2021-05-01
    Description: The sediment profile from Lake Gościąż in central Poland comprises a continuous, seasonally resolved and exceptionally well‐preserved archive of the Younger Dryas (YD) climate variation. This provides a unique opportunity for detailed investigation of lake system responses during periods of rapid climate cooling (YD onset) and warming (YD termination). The new varve record of Lake Gościąż presented here spans 1662 years from the late Allerød (AL) to the early Preboreal (PB). Microscopic varve counting provides an independent chronology with a YD duration of 1149+14/–22 years, which confirms previous results of 1140±40 years. We link stable oxygen isotopes and chironomid‐based air temperature reconstructions with the response of various geochemical and varve microfacies proxies especially focusing on the onset and termination of the YD. Cooling at the YD onset lasted ~180 years, which is about a century longer than the terminal warming that was completed in ~70 years. During the AL/YD transition, environmental proxy data lagged the onset of cooling by ~90 years and revealed an increase of lake productivity and internal lake re‐suspension as well as slightly higher detrital sediment input. In contrast, rapid warming and environmental changes during the YD/PB transition occurred simultaneously. However, initial changes such as declining diatom deposition and detrital input occurred already a few centuries before the rapid warming at the YD/PB transition. These environmental changes likely reflect a gradual increase in summer air temperatures already during the YD. Our data indicate complex and differing environmental responses to the major climate changes related to the YD, which involve different proxy sensitivities and threshold processes.
    Description: National Science Centre
    Description: Virtual Institute of Integrated Climate and Landscape Evolution Analysis (ICLEA)
    Keywords: 551.79 ; central Poland ; Younger Dryas ; sedimentation pattern ; lake sediments
    Type: article
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    CITATION GEO-LEO
  • 2
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    Age model of lateglacial ICDP core 5017-1-A (2022)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: This dataset provides the results from Bayesian age depth modelling in OxCal for ICDP core 5017-1-A, retrieved from the deep northern Dead Sea basin in 2010/11, for the last glacial-interglacial transition between ~101 and 88.5 m sediment depth below lake floor (ca. 17-11.5 ka BP). The model was performed in OxCal v.4.4 using a P_Sequence (1,1,C(-2,2)) (Ramsey 2008; Ramsey 2009; Ramsey and Lee 2013) and includes three tephrochronological ages from Neugebauer et al. (2021) and three radiocarbon ages from Kitagawa et al. (2017).
    Keywords: AGE; Age, uncertainty maximum/old; Age, uncertainty minimum/young; CDRILL; Core drilling; Dead Sea; Dead Sea Basin, Israel; DEPTH, sediment/rock; DSDDP_5017-1-A; Eastern Mediterranean; ICDP; International Continental Scientific Drilling Program; Lateglacial; microfacies analyses; Paleoclimate; varve chronology
    Type: Dataset
    Format: text/tab-separated-values, 5636 data points
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    DATA PANGAEA
  • 3
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    Microfacies data and age model from the International Continental Scientific Drilling Program (ICDP) Dead Sea core and the Masada outcrop (southwestern shore of the Dead Sea) (2022)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Description: These datasets provide sedimentological data partly at annual resolution and an age model for the lateglacial part of (1) the ICDP sediment core 5017-1-A retrieved from the deep northern Dead Sea basin in 2010/11, and (2) for the Masada outcrop located at the southwestern shore of the Dead Sea sampled in 2018. The here investigated two sediment sections cover the last glacial-interglacial transition (ca. 17-11.5 ka BP) in the hydroclimatically sensitive Levant, when the water level of Lake Lisan – the precursor of the Dead Sea – dropped dramatically from its glacial high-stand to the Holocene low levels. Here, we analyze the interval between the last two gypsum units – the Upper Gypsum Unit (UGU) and the Additional Gypsum Unit (AGU) – which were also used to correlate the two sites. In the ICDP core this section is located between ~101 and 88.5 m sediment depth below lake floor and at Masada it encompasses the uppermost ~3.8 m sediments of the Lisan Formation, which form the terminal deposit at this site. Due to the lake level decline, the complete transition into the Holocene is only recorded in the ICDP core, while sedimentation at Masada terminates earlier. The microfacies was investigated by continuous thin section microscopy, while additional macroscopic information is provided from over- and underlying sediment sections. A revised chronology using age modelling in OxCal (Ramsey 2008; Ramsey 2009; Ramsey and Lee 2013) was developed for the ICDP core and a floating varve chronology was constructed at Masada. Using these new microfacies data from marginal (Masada) and deep-water (ICDP core) sediments, the hydroclimatic variability during the final stage of Lake Lisan can be reconstructed, which could provide important insights into the development of human sedentism in the region at this time.
    Keywords: Dead Sea; Eastern Mediterranean; ICDP; International Continental Scientific Drilling Program; Lateglacial; microfacies analyses; Paleoclimate; varve chronology
    Type: Dataset
    Format: application/zip, 5 datasets
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    DATA PANGAEA
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