Whole-rock, mineral, matrix glass and Fe-Ti oxide geochemistry of the 1937, 1994 and 2014 eruption products of Rabaul Caldera, Papua New Guinea
Abstract:
This dataset comprises the complete geochemical data supporting Höhn et al. (Journal of Petrology) on the magma storage and evolution of Rabaul Caldera, Papua New Guinea. It includes whole-rock major and trace element compositions, electron probe microanalyses of plagioclase, clinopyroxene, orthopyroxene, olivine, Ti-magnetite and matrix glass, Fe-Ti oxide oxybarometry calculations, and compositional zoning profiles across plagioclase, clinopyroxene and olivine crystals.
Samples comprise pumice from the 1937 Vulcan eruption, volcanic bombs and lavas from the 1994 Vulcan and Tavurvur eruptions, and volcanic bombs from the 2014 Tavurvur eruption. Whole-rock major elements were determined by X-ray fluorescence and trace elements by LA-ICP-MS at ETH Zürich. Mineral and matrix glass compositions were determined by electron probe microanalysis in six analytical sessions at the University of Münster (JEOL JXA-8530F) and the University of Manchester (Cameca SX100), and include paired core and rim analyses, crystals occurring both as isolated macrocrysts and within mineral clots, and rim-to-rim and core-to-rim zoning traverses. Oxygen fugacities were calculated from Ti-magnetite and matrix glass compositions using the FeTiMM oxybarometer of Arató and Audétat (2017).
The data were collected to characterise the crystal cargo of Rabaul's post-caldera eruption products, to identify texturally and compositionally distinct mineral clot populations, and to constrain magma storage conditions, mafic recharge and magma mixing beneath the caldera. Full details of analytical methods, precision and accuracy are given in the Supplementary Material of the associated publication.
How to cite this dataset:
Höhn, M., McCormick Kilbride, B. T., Hartley, M. E., 2026. Whole-rock, mineral, matrix glass and Fe-Ti oxide geochemistry of the 1937, 1994 and 2014 eruption products of Rabaul Caldera, Papua New Guinea, Version 1.0. Interdisciplinary Earth Data Alliance (IEDA).
https://doi.org/10.60520/IEDA/114601. Accessed 2026-08-24.
DOI Creation Date:
2026-08-18
Related
Publication(s):
M. Höhn, M. Hartley, J.B. Dikaung, I. Itikarai, K. Mulina, S. Saunders, M. Sindang &
B. McCormick Kilbride (in review at JPet): Petrological insights into magma storage and evolution at Rabaul Caldera, Papua New Guinea. EarthArXiv Preprint.
License:
Creative Commons Attribution 4.0 International [CC-BY-4.0]
Keyword(s):
Coverage Scope: Regional (Continents, Oceans)
User Contributed Keyword(s):
Rabaul Caldera, whole-rock geochemistry, major elements, trace elements, X-ray fluorescence, XRF, LA-ICP-MS, electron probe microanalysis, EPMA, mineral chemistry, plagioclase, clinopyroxene, orthopyroxene, olivine, Ti-magnetite, matrix glass, compositional zoning, zoning profiles, mineral clots, glomerocrysts, oxybarometry, thermobarometry, magma storage, magma mixing, mafic recharge, crystal mush, arc volcanism
Bounding Coordinates:
North: -4.2 South: -4.3 East: 152.25 West: 152.15
Data Available On:
2026-11-01