A simplified isotope dilution approach for the U–Pb dating of speleogenic and other low-<sup>232</sup>Th carbonates by multi-collector ICP-MS
<p>We describe a new method for the measurement of <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"&g...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2022-01-01
|
| Series: | Geochronology |
| Online Access: | https://gchron.copernicus.org/articles/4/33/2022/gchron-4-33-2022.pdf |
| _version_ | 1797227199402606592 |
|---|---|
| author | A. J. Mason A. Vaks A. Vaks S. F. M. Breitenbach J. N. Hooker J. N. Hooker G. M. Henderson |
| author_facet | A. J. Mason A. Vaks A. Vaks S. F. M. Breitenbach J. N. Hooker J. N. Hooker G. M. Henderson |
| author_sort | A. J. Mason |
| collection | DOAJ |
| description | <p>We describe a new method for the measurement of <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><mi mathvariant="normal">U</mi><mo>/</mo><mi mathvariant="normal">Pb</mi></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="30pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="e043b0a717ed7605fa31d32304cccc94"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="gchron-4-33-2022-ie00001.svg" width="30pt" height="14pt" src="gchron-4-33-2022-ie00001.png"/></svg:svg></span></span>
ratios by isotope dilution multi-collector inductively coupled plasma mass
spectrometry (MC-ICP-MS) for the dating of geologically young clean
carbonates, particularly speleothems. The method is intended for materials
containing little or no initial <span class="inline-formula"><sup>232</sup></span>Th. We illustrate and validate the
method with four examples ranging from 0.57 to 20 Ma. The new method
is capable of applying the <span class="inline-formula"><sup>235</sup></span>U–<span class="inline-formula"><sup>207</sup></span>Pb and
<span class="inline-formula"><sup>238</sup></span>U–<span class="inline-formula"><sup>234</sup></span>U–<span class="inline-formula"><sup>206</sup></span>Pb chronometers, common Pb and quantifiable
residual <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M9" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msup><mi/><mn mathvariant="normal">234</mn></msup><mi mathvariant="normal">U</mi><msup><mo>/</mo><mn mathvariant="normal">238</mn></msup><mi mathvariant="normal">U</mi></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="52pt" height="15pt" class="svg-formula" dspmath="mathimg" md5hash="a9cbbcfe4acccbf09a9fda48c3a2a269"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="gchron-4-33-2022-ie00002.svg" width="52pt" height="15pt" src="gchron-4-33-2022-ie00002.png"/></svg:svg></span></span> disequilibrium permitting. These provide an
alternative to the more widely used <span class="inline-formula"><sup>238</sup></span>U–<span class="inline-formula"><sup>206</sup></span>Pb chronometer, which
can be highly inaccurate for samples that are <span class="inline-formula"><</span> ca. 20 million years old,
owing to uncertainties in the excess initial <span class="inline-formula"><sup>234</sup></span>U (hence, excess
radiogenic <span class="inline-formula"><sup>206</sup></span>Pb) commonly observed in speleothems.</p> |
| first_indexed | 2024-04-24T14:37:00Z |
| format | Article |
| id | doaj.art-01063b88bb114527b20b2ecc98c39095 |
| institution | Directory Open Access Journal |
| issn | 2628-3719 |
| language | English |
| last_indexed | 2024-04-24T14:37:00Z |
| publishDate | 2022-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Geochronology |
| spelling | doaj.art-01063b88bb114527b20b2ecc98c390952024-04-02T23:38:44ZengCopernicus PublicationsGeochronology2628-37192022-01-014335410.5194/gchron-4-33-2022A simplified isotope dilution approach for the U–Pb dating of speleogenic and other low-<sup>232</sup>Th carbonates by multi-collector ICP-MSA. J. Mason0A. Vaks1A. Vaks2S. F. M. Breitenbach3J. N. Hooker4J. N. Hooker5G. M. Henderson6Department of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN, United KingdomDepartment of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN, United Kingdompresent address: Geological Survey of Israel, 32 Yeshayahu Leibowitz Street, 9692100 Jerusalem, IsraelDepartment of Geography and Environmental Sciences, Northumbria University, Ellison Place, Newcastle upon Tyne, NE1 8ST, United KingdomDepartment of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN, United Kingdompresent address: School of Mathematics, Science and Engineering, University of the Incarnate Word, 4301 Broadway, San Antonio, Texas 78209, USADepartment of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN, United Kingdom<p>We describe a new method for the measurement of <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M2" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><mi mathvariant="normal">U</mi><mo>/</mo><mi mathvariant="normal">Pb</mi></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="30pt" height="14pt" class="svg-formula" dspmath="mathimg" md5hash="e043b0a717ed7605fa31d32304cccc94"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="gchron-4-33-2022-ie00001.svg" width="30pt" height="14pt" src="gchron-4-33-2022-ie00001.png"/></svg:svg></span></span> ratios by isotope dilution multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) for the dating of geologically young clean carbonates, particularly speleothems. The method is intended for materials containing little or no initial <span class="inline-formula"><sup>232</sup></span>Th. We illustrate and validate the method with four examples ranging from 0.57 to 20 Ma. The new method is capable of applying the <span class="inline-formula"><sup>235</sup></span>U–<span class="inline-formula"><sup>207</sup></span>Pb and <span class="inline-formula"><sup>238</sup></span>U–<span class="inline-formula"><sup>234</sup></span>U–<span class="inline-formula"><sup>206</sup></span>Pb chronometers, common Pb and quantifiable residual <span class="inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" id="M9" display="inline" overflow="scroll" dspmath="mathml"><mrow class="chem"><msup><mi/><mn mathvariant="normal">234</mn></msup><mi mathvariant="normal">U</mi><msup><mo>/</mo><mn mathvariant="normal">238</mn></msup><mi mathvariant="normal">U</mi></mrow></math><span><svg:svg xmlns:svg="http://www.w3.org/2000/svg" width="52pt" height="15pt" class="svg-formula" dspmath="mathimg" md5hash="a9cbbcfe4acccbf09a9fda48c3a2a269"><svg:image xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="gchron-4-33-2022-ie00002.svg" width="52pt" height="15pt" src="gchron-4-33-2022-ie00002.png"/></svg:svg></span></span> disequilibrium permitting. These provide an alternative to the more widely used <span class="inline-formula"><sup>238</sup></span>U–<span class="inline-formula"><sup>206</sup></span>Pb chronometer, which can be highly inaccurate for samples that are <span class="inline-formula"><</span> ca. 20 million years old, owing to uncertainties in the excess initial <span class="inline-formula"><sup>234</sup></span>U (hence, excess radiogenic <span class="inline-formula"><sup>206</sup></span>Pb) commonly observed in speleothems.</p>https://gchron.copernicus.org/articles/4/33/2022/gchron-4-33-2022.pdf |
| spellingShingle | A. J. Mason A. Vaks A. Vaks S. F. M. Breitenbach J. N. Hooker J. N. Hooker G. M. Henderson A simplified isotope dilution approach for the U–Pb dating of speleogenic and other low-<sup>232</sup>Th carbonates by multi-collector ICP-MS Geochronology |
| title | A simplified isotope dilution approach for the U–Pb dating of speleogenic and other low-<sup>232</sup>Th carbonates by multi-collector ICP-MS |
| title_full | A simplified isotope dilution approach for the U–Pb dating of speleogenic and other low-<sup>232</sup>Th carbonates by multi-collector ICP-MS |
| title_fullStr | A simplified isotope dilution approach for the U–Pb dating of speleogenic and other low-<sup>232</sup>Th carbonates by multi-collector ICP-MS |
| title_full_unstemmed | A simplified isotope dilution approach for the U–Pb dating of speleogenic and other low-<sup>232</sup>Th carbonates by multi-collector ICP-MS |
| title_short | A simplified isotope dilution approach for the U–Pb dating of speleogenic and other low-<sup>232</sup>Th carbonates by multi-collector ICP-MS |
| title_sort | simplified isotope dilution approach for the u pb dating of speleogenic and other low sup 232 sup th carbonates by multi collector icp ms |
| url | https://gchron.copernicus.org/articles/4/33/2022/gchron-4-33-2022.pdf |
| work_keys_str_mv | AT ajmason asimplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT avaks asimplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT avaks asimplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT sfmbreitenbach asimplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT jnhooker asimplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT jnhooker asimplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT gmhenderson asimplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT ajmason simplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT avaks simplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT avaks simplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT sfmbreitenbach simplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT jnhooker simplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT jnhooker simplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms AT gmhenderson simplifiedisotopedilutionapproachfortheupbdatingofspeleogenicandotherlowsup232supthcarbonatesbymulticollectoricpms |