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  Rockmagnetic, paleomagnetic and paleointensity results across a lava flow from a December 2021 eruption in La Palma (Canary Islands)

Calvo-Rathert, M., Parés, J., Vernet, E., Soler, V., Carrancho, Á., Bógalo, M.-F., Sánchez-Moreno, E.-M., Yamamoto, Y. (2023): Rockmagnetic, paleomagnetic and paleointensity results across a lava flow from a December 2021 eruption in La Palma (Canary Islands), XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-0567

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Datensatz-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016924 Versions-Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5016924_2
Genre: Konferenzbeitrag

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 Urheber:
Calvo-Rathert, Manuel1, Autor
Parés, Josep1, Autor
Vernet, Eva1, Autor
Soler, Vicente1, Autor
Carrancho, Ángel1, Autor
Bógalo, María-Felicidad1, Autor
Sánchez-Moreno, Elisa-María1, Autor
Yamamoto, Yuhji1, Autor
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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Schlagwörter: -
 Zusammenfassung: The recent volcanic activity in the island of La Palma (Canary Islands, Spain) lasted during 85 days between September and December 2021 and ejected more than 200 million cubic meters of lava flows and 10 million cubic meters of tephra. This very recent volcanic activity allows specific studies to be carried out aiming to better understand how rocks become magnetised during cooling and to investigate to what extent they accurately record both geomagnetic field intensity and direction. With this aim in mind, we sampled a 2.20 m thick basaltic lava flow formed during an eruption in December 2021, and recently made accessible thanks to a new road built across the volcanic material. Samples were taken every few centimetres across the whole flow such that a total of 28 oriented samples could be obtained. In addition, some samples cooled down in the ocean were also taken. Rock magnetic experiments performed included the following experiments: Determination of viscosity parameter,anisotropy of magnetic susceptibility (AMS), thermomagnetic magnetisation-versus-temperature and susceptibility-versus-temperature curves, isothermal remanent magnetisation (IRM) acquisition curves and hysteresis and backfield curves measured both before and after heating. Paleomagnetic experiments included both thermal and alternating field demagnetisation experiments. Variable rock-magnetic and paleomagnetic characteristics have been observed along the flow. Paleointensity experiments performed with the Thellier-type, multispecimen and Tsunakawa-Shaw methods are underway.

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Sprache(n): eng - Englisch
 Datum: 2023
 Publikationsstatus: Final veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: DOI: 10.57757/IUGG23-0567
 Art des Abschluß: -

Veranstaltung

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Veranstaltungsort: Berlin
Start-/Enddatum: 2023-07-11 - 2023-07-20

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Titel: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Genre der Quelle: Konferenzband
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Potsdam : GFZ German Research Centre for Geosciences
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