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dc.contributor.authorDröllner, Maximilian
dc.contributor.authorBarham, Milo
dc.contributor.authorKirkland, Christopher
dc.contributor.authorWare, Bryant
dc.date.accessioned2023-03-14T08:12:47Z
dc.date.available2023-03-14T08:12:47Z
dc.date.issued2021
dc.identifier.citationDröllner, M. and Barham, M. and Kirkland, C.L. and Ware, B. 2021. Every zircon deserves a date: Selection bias in detrital geochronology. Geological Magazine. 158 (6): pp. 1135-1142.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/90953
dc.identifier.doi10.1017/S0016756821000145
dc.description.abstract

Detrital zircon geochronology can help address stratigraphic- to lithospheric-scale geological questions. The approach is reliant on statistically robust, representative age distributions that fingerprint source areas. However, there is a range of biases that may influence any detrital age signature. Despite being a fundamental and controllable source of bias, handpicking of zircon grains has received surprisingly little attention. Here, we show statistically significant differences in age distributions between bulk-mounted and handpicked fractions from an unconsolidated heavy mineral sand deposit. Although there is no significant size difference between bulk-mounted and handpicked grains, there are significant differences in their aspect ratio, circularity and colour, which indicate inadvertent preferential visual selection of euhedral and coloured zircon grains. Grain colour comparisons between dated and bulk zircon fractions help quantify bias. Bulk-mounting is the preferred method to avoid human-induced selection bias in detrital zircon geochronology.

dc.languageEnglish
dc.publisherCAMBRIDGE UNIV PRESS
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/LE190100176
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectGeosciences, Multidisciplinary
dc.subjectGeology
dc.subjectdetrital zircon
dc.subjectU&#8211
dc.subjectPb geochronology
dc.subjectsample preparation
dc.subjectprovenance
dc.subjectreproducibility
dc.subjectselection bias
dc.subjectU-PB
dc.subjectPROVENANCE
dc.subjectAGE
dc.subjectCONSTRAINTS
dc.subjectWESTERN
dc.subjectRECOGNITION
dc.subjectINFORMATION
dc.subjectFERTILITY
dc.subjectEVOLUTION
dc.subjectTERRANES
dc.titleEvery zircon deserves a date: Selection bias in detrital geochronology
dc.typeJournal Article
dcterms.source.volume158
dcterms.source.number6
dcterms.source.startPage1135
dcterms.source.endPage1142
dcterms.source.issn0016-7568
dcterms.source.titleGeological Magazine
dc.date.updated2023-03-14T08:12:47Z
curtin.departmentSchool of Earth and Planetary Sciences (EPS)
curtin.departmentJohn de Laeter Centre (JdLC)
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidBarham, Milo [0000-0003-0392-7306]
curtin.contributor.orcidKirkland, Christopher [0000-0003-3367-8961]
curtin.contributor.orcidWare, Bryant [0000-0002-3907-4344]
curtin.contributor.orcidDroellner, Maximilian [0000-0001-8661-9565]
curtin.contributor.orcidDröllner, Maximilian [0000-0001-8661-9565]
curtin.contributor.researcheridKirkland, Christopher [S-3305-2016]
curtin.identifier.article-numberPII S0016756821000145
dcterms.source.eissn1469-5081
curtin.contributor.scopusauthoridBarham, Milo [55059807200]
curtin.contributor.scopusauthoridKirkland, Christopher [14622849000]
curtin.contributor.scopusauthoridWare, Bryant [57193812089]
curtin.repositoryagreementV3


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