rdf-syntax-grammar
mods:
  schema location: http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
  title info:
    title: Comparative 14C and OSL dating of loess-paleosol sequences to evaluate post-depositional contamination of n-alkane biomarkers
  title info:
    title: Comparative 14 C and OSL dating of loess-paleosol sequences to evaluate post-depositional contamination of n-alkane biomarkers
  name:
    name part: Zech, Michael
    name part: 1977-
    role:
      role term: creator
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Kreutzer, Sebastian
    name part: 1980-
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Zech, Roland
    name part: 1977-
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Goslar, Tomasz
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Meszner, Sascha
    name part: 1981-
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: McIntyre, Cameron
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Häggi, Christoph
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Eglinton, Timothy Ian
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Faust, Dominik
    name part: 1954-
    role:
      role term: VerfasserIn
    role:
      role term: aut
  name:
    name part: Fuchs, Markus
    name part: 1968-
    role:
      role term: VerfasserIn
    role:
      role term: aut
  type of resource: text
  origin info:
    place:
      place term: xx
    date issued: 2017
    issuance: monographic
  language:
    language term: eng
  physical description:
    form: remote
    extent: 10
  abstract: There is an ongoing controversial discussion as to whether n-alkane lipid biomarkers—and organic matter of loess in general—reflect a synsedimentary paleoenvironmental/climate signal or whether they are significantly affected by postdepositional “contamination,” for example related to root and rhizomicrobial activity. In order to address this issue at our study site (the Middle to Late Weichselian loess-paleosol sequence Gleina in Saxony, Germany), we determined and compared radiocarbon ages of bulk n-alkanes and sedimentation ages, as assessed by optically stimulated luminescence (OSL) dating. The bulk n-alkanes of the four dated samples yielded calibrated 14C ages ranging from 24.1 to 49.7 cal ka BP (95.4% probability ranges). While the three uppermost n-alkane samples are well within the range or even slightly older than the OSL-inferred sedimentation ages, the lowermost n-alkane sample is slightly younger than the OSL ages. There is hence little or no evidence at our study site for n-alkanes in loess-paleosol sequences being significantly “contaminated” by deep subsoil rooting or microbial processes. We propose a 14C isotope mass balance calculation for estimating such contaminations quantitatively. Radiocarbon dating of bulk n-alkanes might have great potential for Quaternary research, and we encourage further comparative 14C and OSL studies.
  note: Michael Zech, Sebastian Kreutzer, Roland Zech, Tomasz Goslar, Sascha Meszner, Cameron McIntyre, Christoph Häggi, Timothy Eglinton, Dominik Faust, Markus Fuchs
  note: Im Titel ist 14 hochgestellt
  note: Gesehen am 26.03.2025
  subject:
    topic: Lipid biomarkers
  subject:
    topic: Loess
  subject:
    topic: Luminescence dating
  subject:
    topic: n-Alkanes
  subject:
    topic: Radiocarbon dating
  subject:
    topic: Rhizomicrobial
  subject:
    topic: Roots
  subject:
    topic: Soil organic matter
  subject:
    topic: Subsoil
  classification: 61
  related item:
    title info:
      title: Quaternary research
    name:
      name part: Comparative 14C and OSL dating of loess-paleosol sequences to evaluate post-depositional contamination of n-alkane biomarkers
    origin info:
      publisher: Cambridge : Cambridge University Press, 1970
    physical description:
      extent: Online-Ressource
    identifier: 1096-0287
    identifier: (DE-627)268127123
    identifier: (DE-600)1471589-2
    identifier: (DE-576)104194030
    part:
      text: 87(2017), 1, Seite 180-189
  related item:
    name:
      name part: Comparative 14C and OSL dating of loess-paleosol sequences to evaluate post-depositional contamination of n-alkane biomarkers
    part:
      text: volume:87
    part:
      text: year:2017
    part:
      text: number:1
    part:
      text: pages:180-189
    part:
      text: extent:10
  identifier: https://doi.org/10.1017/qua.2016.7
  identifier: https://www.cambridge.org/core/journals/quaternary-research/article/comparative-14c-and-osl-dating-of-loesspaleosol-sequences-to-evaluate-postdepositional-contamination-of-nalkane-biomarkers/6805B0DF2…
  record info:
    record content source: DE-627
    record creation date: 250326
    record change date: 20250717003002.0
    record identifier: 192059809X
    language of cataloging:
      language term: ger