Tracing the source and transformations of organic matter in a Mars analogue lava tube using Py-CSIA

páginas.- 4 figuras.- 1 tabla.- referencias

Detalles Bibliográficos
Autores: Jiménez Morillo, N. T., San Emeterio, Layla M., Rosa Arranz, José M. de la, González-Pérez, José Antonio, Sauro, Francesco, Miller, A. Z.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2026
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/424689
Acceso en línea:http://hdl.handle.net/10261/424689
Access Level:acceso embargado
Palabra clave:Volcanic caves
Speleothems
Mass spectrometry
Stable isotope
Analytical pyrolysis
Astrobiology
id ES_6c76e9e8a8ee873ae87ec2a439e2015f
oai_identifier_str oai:digital.csic.es:10261/424689
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Tracing the source and transformations of organic matter in a Mars analogue lava tube using Py-CSIA
title Tracing the source and transformations of organic matter in a Mars analogue lava tube using Py-CSIA
spellingShingle Tracing the source and transformations of organic matter in a Mars analogue lava tube using Py-CSIA
Jiménez Morillo, N. T.
Volcanic caves
Speleothems
Mass spectrometry
Stable isotope
Analytical pyrolysis
Astrobiology
title_short Tracing the source and transformations of organic matter in a Mars analogue lava tube using Py-CSIA
title_full Tracing the source and transformations of organic matter in a Mars analogue lava tube using Py-CSIA
title_fullStr Tracing the source and transformations of organic matter in a Mars analogue lava tube using Py-CSIA
title_full_unstemmed Tracing the source and transformations of organic matter in a Mars analogue lava tube using Py-CSIA
title_sort Tracing the source and transformations of organic matter in a Mars analogue lava tube using Py-CSIA
dc.creator.none.fl_str_mv Jiménez Morillo, N. T.
San Emeterio, Layla M.
Rosa Arranz, José M. de la
González-Pérez, José Antonio
Sauro, Francesco
Miller, A. Z.
author Jiménez Morillo, N. T.
author_facet Jiménez Morillo, N. T.
San Emeterio, Layla M.
Rosa Arranz, José M. de la
González-Pérez, José Antonio
Sauro, Francesco
Miller, A. Z.
author_role author
author2 San Emeterio, Layla M.
Rosa Arranz, José M. de la
González-Pérez, José Antonio
Sauro, Francesco
Miller, A. Z.
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
European Commission
Consejo Superior de Investigaciones Científicas (España)
Fundação para a Ciência e a Tecnologia (Portugal)
Junta de Andalucía
Jiménez Morillo, N. T. [0000-0001-5746-1922]
San Emeterio, Layla M. [0000-0002-0919-1283]
Rosa Arranz, José M. de la [0000-0003-2857-2345]
González-Pérez, José Antonio [0000-0001-7607-1444]
Sauro, Francesco [0000-0002-1878-0362]
Miller, A. Z. [0000-0002-0553-8470]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Volcanic caves
Speleothems
Mass spectrometry
Stable isotope
Analytical pyrolysis
Astrobiology
topic Volcanic caves
Speleothems
Mass spectrometry
Stable isotope
Analytical pyrolysis
Astrobiology
description páginas.- 4 figuras.- 1 tabla.- referencias
publishDate 2026
dc.date.none.fl_str_mv 2026
2026
2026
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http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/424689
url http://hdl.handle.net/10261/424689
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2024-2027/PID2024-162087NB-C21
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/RyC2021-031253-I
http://dx.doi.org/10.1016/j.jaap.2026.107756
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dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
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dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
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spelling Tracing the source and transformations of organic matter in a Mars analogue lava tube using Py-CSIAJiménez Morillo, N. T.San Emeterio, Layla M.Rosa Arranz, José M. de laGonzález-Pérez, José AntonioSauro, FrancescoMiller, A. Z.Volcanic cavesSpeleothemsMass spectrometryStable isotopeAnalytical pyrolysisAstrobiologypáginas.- 4 figuras.- 1 tabla.- referenciasVolcanic speleothems are promising archives of organic matter (OM) in planetary analogue environments, offering valuable insights into past or extant microbial life and environmental conditions. In this study, we applied elemental analysis–isotope ratio mass spectrometry (EA/IRMS), analytical pyrolysis (Py-GC/MS), and pyrolysis-compound-specific isotope analysis (Py-CSIA) to characterize the molecular and isotope composition of four samples collected from the Corona Lava Tube system in Lanzarote (Canary Islands, Spain). This site, explored during the ESA PANGAEA-X astronaut training campaign, serves as a natural laboratory for Mars subsurface analogues. We investigated two distinct cave samples (a black, organic-rich microbial mat and a white, mineral-dominated deposit), along with overlying topsoil and Euphorbia balsamifera vegetation, to trace the origin, transformation, and preservation of OM in this extreme subsurface environment. Stable isotope data and compound-specific signatures revealed marked differences in carbon and hydrogen isotope compositions between surface- and cave-derived organics, indicating divergent biogeochemical pathways and microbial activity. Notably, ¹³C-enrichment in sterols and lignin-derived compounds within the cave matrix pointed to intense microbial processing, while δ²H data reflected the incorporation of past meteoric water and diagenetic alteration. Our findings demonstrate the power of Py-CSIA for resolving biosignatures at the molecular level and underscore the diagnostic potential of isotope tools in volcanic subsurface systems. This approach provides a critical framework for future astrobiological exploration and life-detection strategies in Martian lava tubes, where subtle organic traces may offer the clearest evidence of habitability or life beyond Earth.his work was supported by the Spanish Ministry of Science and Innovation (MCIN/AEI/ 10.13039/501100011033) under the research project TUBOLAN PID2019-108672RJ-I00 and by the Spanish National Research Council (CSIC) through the intramural project PIE_20214AT021. This work was also supported by the HERMES project (ref. PID2024-162087NB-C21) funded by MICIU/AEI/10.13039/501100011033/. We acknowledge the financial support from the Portuguese Foundation for Science and Technology (FCT) under the MICROCENO project (10.54499/PTDC/CTA-AMB/0608/2020), and from the MICROLAVA project (PROYEXCEL_00185) funded by the Andalusia Regional Government. N.T.J.M. thanks the support from the Ramón y Cajal contract (RyC2021-031253-I) funded by MCIN/AEI/10.13039/501100011033 and the European Union “NextGenerationEU”/PRTR.Peer reviewedElsevierMinisterio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)European CommissionConsejo Superior de Investigaciones Científicas (España)Fundação para a Ciência e a Tecnologia (Portugal)Junta de AndalucíaJiménez Morillo, N. T. [0000-0001-5746-1922]San Emeterio, Layla M. [0000-0002-0919-1283]Rosa Arranz, José M. de la [0000-0003-2857-2345]González-Pérez, José Antonio [0000-0001-7607-1444]Sauro, Francesco [0000-0002-1878-0362]Miller, A. Z. [0000-0002-0553-8470]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262026info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/424689reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2019-108672RJ-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2024-2027/PID2024-162087NB-C21info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/RyC2021-031253-Ihttp://dx.doi.org/10.1016/j.jaap.2026.107756Síinfo:eu-repo/semantics/embargoedAccessoai:digital.csic.es:10261/4246892026-05-22T06:33:51Z
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