Rock Magnetism of Lapilli and Lava Flows from Cumbre Vieja Volcano, 2021 Eruption (La Palma, Canary Islands): Initial Reports

We present initial rock magnetic results for both lava flows and lapilli produced by the 2021 eruption of Cumbre Vieja, La Palma (Canary Islands). Samples were taken during to minimize early alteration weathering rocks tephra. Standard procedures included progressive alternating field thermal demagnetization, hysteresis curves, thermomagnetic experiments, acquisition isothermal remanent magnetization (IRM), First-Order Reversal Curves (FORCs). Overall, our observations, including low medium unblocking temperatures, 1 Tesla, abundance wasp-waist loops, strongly suggest presence Ti-rich titanomagnetites as main remanence carriers in lapilli, addition some hematite well. Whereas former has been directly seen (SEM), is elusive with nonmagnetic-based methods. Rock data, on a Day plot, also reveal that grain size tends be larger than lapilli.