Articles | Volume 2, issue 2
Geochronology, 2, 187–208, 2020
https://doi.org/10.5194/gchron-2-187-2020
Geochronology, 2, 187–208, 2020
https://doi.org/10.5194/gchron-2-187-2020

Research article 08 Jul 2020

Research article | 08 Jul 2020

Multimethod U–Pb baddeleyite dating: insights from the Spread Eagle Intrusive Complex and Cape St. Mary's sills, Newfoundland, Canada

Johannes E. Pohlner et al.

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
ED: Publish subject to revisions (further review by editor and referees) (21 Apr 2020) by Daniela Rubatto
AR by Johannes Pohlner on behalf of the Authors (27 May 2020)  Author's response    Manuscript
ED: Publish subject to technical corrections (17 Jun 2020) by Daniela Rubatto
ED: Publish as is (17 Jun 2020) by Klaus Mezger(Editor)
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Short summary
Baddeleyite is commonly used for U–Pb dating, but textural complexities, alteration features and discordance often make age interpretation difficult. Based on this case study, we discuss strategies for obtaining more accurate baddeleyite ages by high-precision and high spatial resolution methods, including analytical challenges and discordance interpretation. An evaluation of microtextures allows us to distinguish among seven different types of baddeleyite–zircon intergrowths.