uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Bulk sediment C-14 dating in an estuarine environment: How accurate can it be?
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Natural Resources and Sustainable Development. Vrije Univ, Dept Earth Sci, Amsterdam, Netherlands..
Akita Univ, Grad Sch Int Resource Sci, Akita, Japan..
Lund Univ, Dept Geol, Lund, Sweden..
Lund Univ, Dept Geol, Lund, Sweden..
Show others and affiliations
2017 (English)In: Paleoceanography, ISSN 0883-8305, E-ISSN 1944-9186, Vol. 32, no 2, p. 123-131Article in journal (Refereed) Published
Abstract [en]

Due to a lack of marine macrofossils in many sediment cores from the estuarine Baltic Sea, researchers are often forced to carry out C-14 determinations on bulk sediment samples. However, ambiguity surrounding the carbon source pathways that contribute to bulk sediment formation introduces a large uncertainty into C-14 geochronologies based on such samples, and such uncertainty may not have been fully considered in previous Baltic Sea studies. We quantify this uncertainty by analyzing bulk sediment C-14 determinations carried out on densely spaced intervals in independently dated late-Holocene sediment sequences from two central Baltic Sea cores. Our results show a difference of similar to 600 C-14 yr in median bulk sediment reservoir age, or R(t)(bulk), between the two core locations (similar to 1200 C-14 yr for one core, similar to 620 C-14 yr for the other), indicating large spatial variation. Furthermore, we also find large downcore (i.e., temporal) R(t)(bulk) variation of at least similar to 200 C-14 yr for both cores. We also find a difference of 585 C-14 yr between two samples taken from the same core depth. We propose that studies using bulk sediment C-14 dating in large brackish water bodies should take such spatiotemporal variation in R(t)(bulk) into account when assessing uncertainties, thus leading to a larger, but more accurate, calibrated age range.

Place, publisher, year, edition, pages
AMER GEOPHYSICAL UNION , 2017. Vol. 32, no 2, p. 123-131
National Category
Geosciences, Multidisciplinary
Identifiers
URN: urn:nbn:se:uu:diva-320780DOI: 10.1002/2016PA002960ISI: 000396832600003OAI: oai:DiVA.org:uu-320780DiVA, id: diva2:1090749
Funder
Swedish Research Council, 637-2014-499Available from: 2017-04-25 Created: 2017-04-25 Last updated: 2017-04-25Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Lougheed, Bryan C.Snowball, Ian

Search in DiVA

By author/editor
Lougheed, Bryan C.Snowball, Ian
By organisation
Natural Resources and Sustainable Development
In the same journal
Paleoceanography
Geosciences, Multidisciplinary

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 319 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf