Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • 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
A tonalitic analogue to ancient detrital zircon
Swedish Museum of Natural History, Department of Geology. Stockholm University.ORCID iD: 0000-0003-0984-3074
Swedish Museum of Natural History, Department of Geology.ORCID iD: 0000-0003-2227-577X
Curtin University.ORCID iD: 0000-0002-3955-3409
University of Western Australia.
2018 (English)In: Chemical Geology, ISSN 0009-2541, E-ISSN 1872-6836, Vol. 499, p. 43-57Article in journal (Refereed) Published
Abstract [en]

A zircon population from an Archean tonalite sample from southern West Greenland hasbeen used as a source analogue in order to test common methods and approaches applied toancient detrital zircon populations. Measurements of U-Th-Pb, oxygen and Lu-Hf isotopes aswell as rare earth element and Ti concentrations were made in these zircon crystals and,where possible, in multiple areas within a single grain. The population is dominated by oscillatory zoned cores aged 3.82 Ga with an isotopically and compositionally distinct rims that formed at 3.59 Ga. We demonstrate that multiple age components may be erroneously inferred from within these oscillatory zoned zircon cores, both from the total population and within individual grains. This has bearing on other zircon-hosted geochemical systems, as temporal correlations may be incorrectly assigned. Oxygen and Lu-Hf isotope compositions are relatively consistent through the population with only a small number of outliers. Ranges in rare earth element and Ti abundances are evident from the total population, from which apparent inverse cooling trends may be inferred. Additionally, we show that even with enhanced filtering of Ti concentrations using light rare earth element abundances,crystallisation temperatures derived from zircon grains of a single, hand sample sized rockcan yield both wide and bimodal results. Since even simple, single “source rock” zirconpopulations may, without careful scrutiny, portray artificially complex results, particular caremust be taken in the interpretation of complex ancient detrital zircon populations.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 499, p. 43-57
Keywords [en]
Amitsoq gneiss, Archean, detrital zircon, geochronology, West Greenland
National Category
Geochemistry
Research subject
The changing Earth
Identifiers
URN: urn:nbn:se:nrm:diva-3201DOI: 10.1016/j.chemgeo.2018.08.028OAI: oai:DiVA.org:nrm-3201DiVA, id: diva2:1273759
Funder
Knut and Alice Wallenberg Foundation, 2012.0097Swedish Research Council, 2012-04370Available from: 2018-12-21 Created: 2018-12-21 Last updated: 2019-01-14Bibliographically approved

Open Access in DiVA

The full text will be freely available from 2020-11-05 15:37
Available from 2020-11-05 15:37

Other links

Publisher's full text

Search in DiVA

By author/editor
Kielman, RossWhitehouse, MartinNemchin, Alexander
By organisation
Department of Geology
In the same journal
Chemical Geology
Geochemistry

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 7 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • 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