Dataset Information

Tramontano, Samantha; ORCID: 0000-0002-6827-5735
Longpré, Marc-Antoine
Mutch, Euan JF
Cortese, Franco
Cross, Andrew
Coldwell, Beverley
D'Auria, Luca
Rodríguez, Fátima
Pankhurst, Matthew J

Ash and lapilli samples were collected during the 2021 eruption of Cumbre Vieja volcano and from historic eruptive centers corresponding to eruptions in 1971, 1949, 1712, 1677, 1646, aand 1585. This dataset reports the major, minor, and select trace element compositions of olivine and clinopyroxene crystals from these samples. Data were acquired by electron probe microanalysis at the American Museum of Natural History. Two types of analyses were performed: (1) wavelength-dispersive spectroscopy (WDS) core-to-rim transects on 15 olivine and 11 clinopyroxene crystals and (2) energy-dispersive spectroscopy (EDS) core-to-rim transects on 114 olivine crystals. Since our main goal was to obtain zoning profiles on a maximum number of crystals, we employed EDS for most of the olivine transects as it provided accurate forsterite content (Fo = mol% Mg/(Mg+Fe)) measurements at considerably shorter acquisition times. Data quality was routinely checked against standard crystals, analyzed before and after no more than 100 unknowns per session (Table S6). These results demonstrate high accuracy and precision for forsterite (Fo) content using both WDS and EDS routines. WDS analyses yielded good accuracy and acceptable precision for minor and trace elements, but EDS precision for Ca was poor; therefore, Ca from EDS measurements is excluded from discussion in the accompanying manuscript. No corrections were applied to the EPMA data collected in this study.

Tramontano, S., Longpré, M., Mutch, E. J., Cortese, F., Cross, A., Coldwell, B., D'Auria, L., Rodríguez, F., Pankhurst, M. J., 2026. Major, minor, and select trace element compositions of olivine and clinopyroxene crystals from Cumbre Vieja eruptions, Version 1.0. Interdisciplinary Earth Data Alliance (IEDA). https://doi.org/10.60520/IEDA/114621. Accessed 2026-11-10.

2026-11-02

TBD, JPET submission

Creative Commons Attribution 4.0 International [CC-BY-4.0]

National Science Foundation: 1944723
MOET32021-0002
CUNY-The Graduate Center Dissertation Year Fellowship

Coverage Scope: Regional (Continents, Oceans)
Geographic Location: Canary Islands

olivine traverses, olivine diffusion chronometry, clinopyroxene traverses, ocean island volcanism, eruption timescales

2026-12-31

Collection