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Using Mg/Ca Ratios from the Limpet Patella depressa Pennant, 1777 Measured by Laser-Induced Breakdown Spectroscopy (LIBS) to Reconstruct Paleoclimate

1
Department of Archaeology, Max Planck Institute for the Science of Human History, Kahlaische Strasse 10, D-07745 Jena, Germany
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Department of Geography, Prehistory and Archaeology, University of the Basque Country (UPV/EHU), C/Tomás y Valiente s/n, 01006 Vitoria-Gasteiz, Spain
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Photonics Engineering Group, Department of TEISA, Edificio I+D+i de Telecomunicaciones, Avda. Los Castros s/n, 39005 Santander, Spain
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Instituto de Investigación Sanitaria Valdecilla (IDIVAL), 39005 Santander, Spain
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CIBER-BBN, Instituto de Salud Carlos III, 28029 Madrid, Spain
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Instituto Internacional de Investigaciones Prehistóricas de Cantabria (Universidad de Cantabria, Gobierno de Cantabria, Grupo Santander), Edificio Interfacultativo de la Universidad de Cantabria, Avda. Los Castros s/n, 39005 Santander, Spain
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School of Social Sciences, University of Queensland, St Lucia, QLD 4072, Australia
*
Author to whom correspondence should be addressed.
Academic Editor: Jordi Revelles
Appl. Sci. 2021, 11(7), 2959; https://doi.org/10.3390/app11072959
Received: 24 February 2021 / Revised: 19 March 2021 / Accepted: 21 March 2021 / Published: 25 March 2021
Measurement of the elemental composition of shells is increasingly emerging as an avenue for obtaining high-resolution insights into paleoclimate and past seasonality. Several studies have shown significant correlations between Mg/Ca ratios measured on shell carbonate and the sea surface temperature (SST) within which this carbonate was precipitated. However, other investigations have reported large variability in this relationship between species. Therefore, further studies, including taxa previously not considered are still required in order to validate these new species as suitable climate proxies. Here, we measured Mg/Ca ratios for limpet Patella depressa Pennant, 1777 samples live-collected in northern Spain for the first time. The elemental ratio was measured using laser-induced breakdown spectroscopy (LIBS), a technique that significantly decreases the time required for sample preparation and increases the number of shells that can be analyzed. In this study, calibration-free LIBS (CF-LIBS) methods were applied to estimate molar concentrations of chemical elements on biogenic calcium carbonate. The Mg/Ca ratio evolution along the shell growth axis was compared with stable oxygen isotope (δ18O) profiles obtained from these same limpets and the SST at the place where the mollusk grew to determine if the sequences obtained correctly reflected environmental conditions during the life-span of the mollusk. The results showed a significant correlation between Mg/Ca ratio series and both δ18O profiles and SST, highlighting the paleoenvironmental and archaeological potential of LIBS analyses on this mollusk species that is frequently found in archaeological contexts in the western Europe. View Full-Text
Keywords: archaeology; mesolithic; N Spain; mollusk shells; marine environment; spectroscopy archaeology; mesolithic; N Spain; mollusk shells; marine environment; spectroscopy
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MDPI and ACS Style

García-Escárzaga, A.; Martínez-Minchero, M.; Cobo, A.; Gutiérrez-Zugasti, I.; Arrizabalaga, A.; Roberts, P. Using Mg/Ca Ratios from the Limpet Patella depressa Pennant, 1777 Measured by Laser-Induced Breakdown Spectroscopy (LIBS) to Reconstruct Paleoclimate. Appl. Sci. 2021, 11, 2959. https://doi.org/10.3390/app11072959

AMA Style

García-Escárzaga A, Martínez-Minchero M, Cobo A, Gutiérrez-Zugasti I, Arrizabalaga A, Roberts P. Using Mg/Ca Ratios from the Limpet Patella depressa Pennant, 1777 Measured by Laser-Induced Breakdown Spectroscopy (LIBS) to Reconstruct Paleoclimate. Applied Sciences. 2021; 11(7):2959. https://doi.org/10.3390/app11072959

Chicago/Turabian Style

García-Escárzaga, Asier; Martínez-Minchero, Marina; Cobo, Adolfo; Gutiérrez-Zugasti, Igor; Arrizabalaga, Alvaro; Roberts, Patrick. 2021. "Using Mg/Ca Ratios from the Limpet Patella depressa Pennant, 1777 Measured by Laser-Induced Breakdown Spectroscopy (LIBS) to Reconstruct Paleoclimate" Appl. Sci. 11, no. 7: 2959. https://doi.org/10.3390/app11072959

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