Major and Trace Element Chemistry of Plagioclase in Tephra-Fall Deposits from Misti Volcano, Southern Peru
Abstract:
Field investigation and mapping of tephra-fall deposits from Misti volcano, southern Peru, reveal at least ten explosive eruptions occurred during the late Pleistocene to Holocene. A subset of three of these deposits were targeted for modeling Mg and Sr diffusion in plagioclase in order to constrain recharge-to-eruption timescales. Analyses were collected as spots along transects placed perpendicular to plagioclase zoning; most but not all transects are taken from zoning nearest the rim. Electron microprobe analyses (EMPA) were collected first followed by laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) over the same transects. This data release contains the following plagioclase major element concentrations collected via EMPA: SiO2, Al2O3, CaO, Na2O, and K2O. It also contains the following trace elements collected via LA-ICP-MS: Li, Mg, Al, Si, Ca, Ti, Fe, Sr, Ba, La, Ce, Eu, and Pb. We also report standard reference material concentrations analyzed during the same sessions as the unknowns.
How to cite this dataset:
Takach, M. K., Tepley III, F. J., Lubbers, J., Harpel, C. J., Aguilar, R., Rivera, M., 2027. Major and Trace Element Chemistry of Plagioclase in Tephra-Fall Deposits from Misti Volcano, Southern Peru, Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
https://doi.org/10.60520/IEDA/114222. Accessed 2026-03-09.
DOI Creation Date:
2026-03-05
Related
Publication(s):
Takach, M.K., Tepley, F.J., Lubbers, J., Harpel, C.J., Aguilar, R., Rivera, M., (in revision), "Recharge-to-eruption timescales garnered from plagioclase diffusion chronometry in mixed tephra-fall deposits at Misti volcano, Peru." Contributions to Mineralogy and Petrology.
License:
Creative Commons Attribution-ShareAlike 4.0 International [CC-BY-SA-4.0]
Funding source(s):
Mineralogical Society of America Grant for Student Research in Mineralogy and Petrology
Geological Society of America Lipman Research Award
Jack Kleinman Grant for Volcano Research
Keyword(s):
Coverage Scope: Other
Geographic Location: Andean Arc, Central Volcanic Zone, Peru
User Contributed Keyword(s):
diffusion chronometry, magma recharge, magma mixing, plagioclase
Data Available On:
2027-01-01