RT info:eu-repo/semantics/article T1 Rock Magnetism of Lapilli and Lava Flows from Cumbre Vieja Volcano, 2021 Eruption (La Palma, Canary Islands): Initial Reports A1 Parés Casanova, Josep M. A1 Vernet Tarrago, Eva A1 Calvo Rathert, Manuel A1 Soler, Vicente A1 Bógalo Román, Mª Felicidad A1 Álvaro, Ana K1 Rock magnetism K1 Canary Islands K1 Recent volcanic eruption K1 Lapilli K1 Basaltic lava flow K1 Física K1 Physics K1 Geología K1 Geology AB We present initial rock magnetic results for both lava flows and lapilli produced by the 2021eruption of the Cumbre Vieja, La Palma (Canary Islands). Samples were taken during the eruption tominimize early alteration and weathering of the rocks and tephra. Standard procedures includedprogressive alternating field and thermal demagnetization, hysteresis curves, thermomagnetic experiments, progressive acquisition of isothermal remanent magnetization (IRM), and First-Order ReversalCurves (FORCs). Overall, our observations, including low to medium unblocking temperatures,isothermal remanent magnetization to 1 Tesla, and the abundance of wasp-waist hysteresis loops,strongly suggest the presence of Ti-rich titanomagnetites as the main remanence carriers in both lavaflows and lapilli, in addition to some hematite as well. Whereas the former has been directly seen(SEM), hematite is elusive with nonmagnetic-based methods. Rock magnetic data, on a Day plot, alsoreveal that the magnetic grain size tends to be larger in the lava flows than in the lapilli. PB MDPI YR 2022 FD 2022-07 LK http://hdl.handle.net/10259/7597 UL http://hdl.handle.net/10259/7597 LA eng NO This research was funded by Agencia Estatal de Investigación, Spain, grant no. PID2019-105796GB-00/AEI/10.13039/501100011033. DS Repositorio Institucional de la Universidad de Burgos RD 29-mar-2024