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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-2026-4195</article-id>
<title-group>
<article-title>Luminescence Dating Reveals Multiple Late Quaternary Eruptions at the Soda Lake Volcanic Center, Nevada</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Rodrigues</surname>
<given-names>Kathleen</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>Ruprecht</surname>
<given-names>Philipp P.</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>de Polo</surname>
<given-names>Craig M.</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Division of Earth and Ecosystem Sciences, Desert Research Institute, Reno, NV, 89512, USA</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Department of Geological Sciences and Engineering, University of Nevada, Reno, Reno, NV, 89557, USA</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Nevada Bureau of Mines and Geology, University of Nevada, Reno, Reno, NV, 89557, USA</addr-line>
</aff>
<pub-date pub-type="epub">
<day>17</day>
<month>08</month>
<year>2026</year>
</pub-date>
<volume>2026</volume>
<fpage>1</fpage>
<lpage>23</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2026 Kathleen Rodrigues et al.</copyright-statement>
<copyright-year>2026</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/2026/egusphere-2026-4195/">This article is available from https://egusphere.copernicus.org/preprints/2026/egusphere-2026-4195/</self-uri>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2026/egusphere-2026-4195/egusphere-2026-4195.pdf">The full text article is available as a PDF file from https://egusphere.copernicus.org/preprints/2026/egusphere-2026-4195/egusphere-2026-4195.pdf</self-uri>
<abstract>
<p>The Soda Lake volcanic center in western Nevada is the youngest known volcanic system in the state, yet its eruptive history remains poorly constrained because of conflicting stratigraphic interpretations and the limitations of conventional radiometric dating in young mafic volcanic terrains. Here we apply post-infrared infrared stimulated luminescence (post-IRIR) dating to potassium-rich feldspar separates extracted from volcaniclastic sediments and plagioclase phenocrysts extracted from juvenile basalt bombs to directly constrain the timing of eruptive activity using two distinct luminescence resetting pathways: complex eruption- and transport-related resetting of volcaniclastic grains (including variable thermal, optical, and mechanical resetting) and thermal resetting of feldspar phenocrysts within basalt bombs. Single-grain post-IRIR measurements of surge and reworked volcaniclastic deposits indicate eruptions at ~5.5 ka and ~12.5 ka. The ~5.5 ka eruption is further corroborated by plagioclase phenocrysts extracted from basalt bombs associated with the youngest eruptive phase, which yielded statistically indistinguishable ages. Despite contrasting depositional histories and luminescence resetting mechanisms, ages derived from sedimentary and bomb-derived materials are internally consistent, demonstrating that reliable eruption chronologies can be established from multiple components of a volcanic system. More broadly, the results demonstrate that eruption-related luminescence resetting may be preserved in juvenile phenocrysts, volcaniclastic sediments, and potentially xenocrystic materials, substantially expanding the range of datable components available in young mafic volcanic systems. These results resolve long-standing uncertainties regarding the eruptive history of the Soda Lake volcanic center and demonstrate the broader potential of luminescence dating for directly constraining young basaltic volcanism in settings where conventional geochronologic methods are ineffective.</p>
</abstract>
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<funding-group>
<award-group id="gs1">
<funding-source>Desert Research Institute</funding-source>
<award-id>Start up funds</award-id>
</award-group>
</funding-group>
</article-meta>
</front>
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