Highly accurate dating of micrometre-scale baddeleyite domains through combined focused ion beam extraction and U–Pb thermal ionization mass spectrometry (FIB-TIMS)

White, Lee F.; Tait, Kimberly T.; Kamo, Sandra L.; Moser, Desmond E.; Darling, James R.

doi:https://doi.org/10.5194/gchron-2-177-2020

Articles | Volume 2, issue 2

https://doi.org/10.5194/gchron-2-177-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gchron-2-177-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 2, issue 2

Research article

|

07 Jul 2020

Research article |

| 07 Jul 2020

Highly accurate dating of micrometre-scale baddeleyite domains through combined focused ion beam extraction and U–Pb thermal ionization mass spectrometry (FIB-TIMS)

Lee F. White, Kimberly T. Tait, Sandra L. Kamo, Desmond E. Moser, and James R. Darling

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Final revised paper (published on 07 Jul 2020)
Preprint (discussion started on 29 Nov 2019)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

- Printer-friendly version

- Supplement

RC1: 'Review', Graham Edwards, 13 Jan 2020
- AC1: 'Response to comments by Graham Edwards', Lee White, 06 Apr 2020
RC2: 'Review', Anonymous Referee #2, 21 Jan 2020
- AC2: 'Response to comments by Reviewer #2', Lee White, 06 Apr 2020
RC3: 'Review', Joshua Davies, 30 Jan 2020
- AC3: 'Response to comments by Joshua Davies', Lee White, 06 Apr 2020

Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision

ED: Publish subject to revisions (further review by editor and referees) (10 Apr 2020) by Brenhin Keller

AR by Lee White on behalf of the Authors (29 Apr 2020) Author's response Manuscript

ED: Publish subject to technical corrections (10 May 2020) by Brenhin Keller

ED: Publish as is (11 May 2020) by Klaus Mezger (Editor)

AR by Lee White on behalf of the Authors (18 May 2020)

Short summary

The generation of highly precise and accurate ages requires crushing of the original sample so that individual mineral grains may be separated out for dating. Here, we use a focused ion beam to extract grains directly from a subset of a sample, effectively performing microsurgery to isolate individual crystals from the rock itself. This approach opens the door to high-precision dating for a variety of precious planetary materials that have previously been challenging to date.