Olivine core and rim electron microprobe analyses for the September 2023 Halema‘uma‘u eruption of Kīlauea, Island of Hawaiʻi

The September 2023 Halema‘uma‘u eruption began on September 10 and ended on September 16 (~1 week; Mulliken et al. 2024). Field crews from the U.S. Geological Survey’s Hawaiian Volcano Observatory collected tephra samples from fissures that had opened up on an area of the caldera floor east of Halema‘uma‘u crater (see Lynn et al. 2024 for map). Air quenched spatter and tephra samples were collected from eight of the fissures that were accessible from the down-dropped block of the old caldera floor to the northeast of the active lake surface. Samples were collected from within a publicly closed area of Hawai‘i Volcanoes National Park in cooperation with the National Park Service. This data release provides olivine core and rim spot analyses from electron microprobe analytical work. The analyses were done on olivine crystals 0.5-2.0 mm in size picked from tephra samples (see Lynn et al. 2024 for additional sample and compositional information).

[
  "010:12"
]

[
  "geospatial"
]