Articles | Volume 18, issue 9
https://doi.org/10.5194/essd-18-6925-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-18-6925-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Data description article
| 
22 Sep 2026
Data description article |
| 22 Sep 2026
| 22 Sep 2026
A random forest isoscape model of bioavailable Sr for South America: a focus on southern Brazil
Cinzia Scaggion
Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via Campi 103, I-41125 Modena, Italy
Tommaso Giovanardi
CORRESPONDING AUTHOR
Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via Campi 103, I-41125 Modena, Italy
László Palcsu
ICER Centre, HUN-REN Institute for Nuclear Research, Bem Square, 18/C 4026 Debrecen, Hungary
Daniel Loponte
Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Instituto Nacional de Antropología y Pensamiento Latinoamericano (INAPL), 3 de Febrero 1370/78, Buenos Aires, Argentina
Mirian Carbonera
Programa de Pós-graduação em Ciências Ambientais e Centro de Memória do Oeste de Santa Catarina da Universidade Comunitária da Região de Chapecó (Unochapecó), Rua Senador Atílio Fontana, 591 E Efapi, 89809000, Chapecó, SC Brazil
Sara Bernardini
Department of Cultural Heritage, University of Bologna, via degli Ariani 1, I-48121 Ravenna, Italy
Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via Campi 103, I-41125 Modena, Italy
Stefano Benazzi
Department of Cultural Heritage, University of Bologna, via degli Ariani 1, I-48121 Ravenna, Italy
Giulia Marciani
Department of Cultural Heritage, University of Bologna, via degli Ariani 1, I-48121 Ravenna, Italy
Marcos Cesar Pereira Santos
Instituto de Ciências da Sociedade, Curso de Arqueologia, Universidade Federal do Oeste do Pará, Santarém, Brazil
Eugenio Bortolini
Department of Cultural Heritage, University of Bologna, via degli Ariani 1, I-48121 Ravenna, Italy
Anna Cipriani
Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via Campi 103, I-41125 Modena, Italy
Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, United States of America
Federico Lugli
Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via Campi 103, I-41125 Modena, Italy
Institut für Geowissenschaften, Goethe-Universität Frankfurt, Frankfurt am Main, Germany
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László Palcsu, Marjan Temovski, Danny Vargas, Matteo Nigro, Christoph Henrich, Yuliya Vystavna, Matija Zorn, Matej Lipar, Miha Pavšek, Jure Tičar, Klara Žagar, and Polona Vreča
EGUsphere, https://doi.org/10.5194/egusphere-2026-3393, https://doi.org/10.5194/egusphere-2026-3393, 2026
This preprint is open for discussion and under review for The Cryosphere (TC).
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The last two glaciers in Slovenia are just disappearing. In 2023, ice cores were taken from Triglav and Skuta Glacier to determine, as a first and maybe the last attempt, the age of ice. At Triglav, the net accumulation is negative since the early 1960s, while ice below 1 m is older than 70 years. Skuta Glacier shows similar patterns. Today, Triglav Glacier has nearly disappeared and Skuta Glacier continues to shrink despite its more sheltered location.
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An unusual tourmaline was studied using a multi-analytical approach. The sample comes from a granitic pegmatite on the island of Elba and consists of three generations of tourmaline: green prismatic tourmaline, a dark fibrous cap, and colourless acicular single crystals. The most likely scenario for its formation involves the miarolitic cavity fracturing due to mechanical shock, the subsequent circulation of the highly reactive cavity fluids, and the leaching of accessory biotite in the surrounding pegmatite.
Alessandro F. Gualtieri, Simona Marchetti Dori, Daniele Malferrari, Tommaso Giovanardi, Riccardo Fantini, Francesco Colombo, Mattia Sisti, Rossella Arletti, Maria Cristina Gamberini, Eleonora Braschi, Andrea Orlando, and Enrico Mugnaioli
Eur. J. Mineral., 36, 749–765, https://doi.org/10.5194/ejm-36-749-2024, https://doi.org/10.5194/ejm-36-749-2024, 2024
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This work deals with a challenging case of a commercial clay from Gomsiqe–Puka (Albania) contaminated by mineral fibres. Detection and quantification of asbestos in this material push the boundaries of current experimental methods. Using TEM, micro-Raman spectroscopy, and EPMA, we identified the presence of asbestos tremolite, along with a rare fibrous variety of diopside. The impact of milling on the detection and quantification of mineral fibres was also evaluated.
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Short summary
In this work, we present a new dataset of strontium isotopes from leaves collected in Santa Catarina and Rio Grande do Sul (Brazil). We combine these data with published South American records to produce a machine learning–based map of strontium isotope distribution across the continent. The dataset and model support studies of ancient mobility, provenance, and environmental and ecological processes.
In this work, we present a new dataset of strontium isotopes from leaves collected in Santa...
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