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<front>
<journal-meta>
<journal-id journal-id-type="publisher">EGUsphere</journal-id>
<journal-title-group>
<journal-title>EGUsphere</journal-title>
<abbrev-journal-title abbrev-type="publisher">EGUsphere</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">EGUsphere</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub"></issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/egusphere-2024-2325</article-id>
<title-group>
<article-title>U-Pb direct dating on calcite paleosol nodules: first absolute age constraints on the Miocene continental succession of the Paris Basin</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Monchal</surname>
<given-names>Vincent</given-names>
<ext-link>https://orcid.org/0000-0002-6238-6995</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Rateau</surname>
<given-names>Remi</given-names>
<ext-link>https://orcid.org/0000-0002-8544-2240</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Drost</surname>
<given-names>Kerstin</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Gagnaison</surname>
<given-names>Cyril</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Mennecart</surname>
<given-names>Bastien</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Toullec</surname>
<given-names>Renaud</given-names>
</name>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Chew</surname>
<given-names>David</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Geology, School of Natural Sciences, Trinity College Dublin, Dublin, D02 PN40, Ireland</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Département Géosciences, Unité Bassins-Réservoirs-Ressources (B2R-U2R 7511), Institut Polytechnique UniLaSalle Beauvais, UniLaSalle-Université de Picardie, Beauvais, 30313, France</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Naturhistorisches Museum Basel, Basel, 4001, Switzerland</addr-line>
</aff>
<pub-date pub-type="epub">
<day>05</day>
<month>08</month>
<year>2024</year>
</pub-date>
<volume>2024</volume>
<fpage>1</fpage>
<lpage>27</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2024 Vincent Monchal et al.</copyright-statement>
<copyright-year>2024</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2024/egusphere-2024-2325/">This article is available from https://egusphere.copernicus.org/preprints/2024/egusphere-2024-2325/</self-uri>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2024/egusphere-2024-2325/egusphere-2024-2325.pdf">The full text article is available as a PDF file from https://egusphere.copernicus.org/preprints/2024/egusphere-2024-2325/egusphere-2024-2325.pdf</self-uri>
<abstract>
<p>Continental sedimentary successions are typically less complete and more poorly preserved than the marine record, leading to limited correlations between basins. Traditionally, intra-basin correlation employs radiometric dating of volcanic markers or relative dating based on the fossil record. However, volcanic markers may not always be present, and biostratigraphy relies on index fossils which are often sparse to absent in continental successions. Recent progress in carbonate U-Pb dating can improve correlations between continental successions by providing absolute age constraints on carbonate deposition and/or on syn- to post-depositional processes such as pedogenesis.&lt;/p&gt;
&lt;p&gt;In this study, we analysed pedogenic calcite nodules within a continental Miocene succession in the southwestern Paris Basin (the important paleontological site at Mauvi&amp;egrave;res quarry, France). Following multimethod petrographic characterisation of the samples, LA-ICP-MS U-Pb dating was employed to obtain formation ages on the pedogenic calcite nodules. The Tera-Wasserburg intercept ages from five nodules from the same horizon (19.3&amp;plusmn;1.3/1.4 Ma, 18.0&amp;plusmn;3.2/3.2 Ma, 19.11&amp;plusmn;0.84/0.94 Ma, 19.0&amp;plusmn;2.3/2.3 Ma and 19.4&amp;plusmn;2.7/2.7 Ma) are in excellent agreement with previous biostratigraphic constraints on the sequence. Petrographic evidence points to a single crystallisation event, and we conclude that the formation of the calcite nodules occurred at 19.34 &amp;plusmn; 0.58/0.73 Ma (central age from a radial plot of the five Tera-Wasserburg intercept ages). This calcite formation age is regarded to represent a minimum depositional age of the strata hosting the root nodules. It provides the first direct age for the continental Miocene succession (and Neogene mammal zone MN3) of the Paris Basin and allows correlation with other continental basins independent of their fossil assemblages or when the fossil content is missing.</p>
</abstract>
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<funding-group>
<award-group id="gs1">
<funding-source>Science Foundation Ireland</funding-source>
<award-id>15/IA/3024</award-id>
</award-group>
<award-group id="gs2">
<funding-source>Environmental Protection Agency</funding-source>
<award-id>15/IA/3024</award-id>
</award-group>
<award-group id="gs3">
<funding-source>Geological Survey of Ireland</funding-source>
<award-id>15/IA/3024</award-id>
</award-group>
</funding-group>
</article-meta>
</front>
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