The 1840 eruption and crystal differentiation in the Kilauean magma column

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ID: 294262
1944
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Abstract
Macdonald recounts the history of the 1840 eruption drawn from earlier sources. He gives the petrography of some vents and an analysis of a lava sample, and olivine separated from it, collected from the lowermost vent. He calculates the composition of the groundmass and compares it to analyses of 1894 and 1920 Kilauea lava, stating that the petrogenesis can be inferred without analyzing samples from the other 1840 vents. Olivine basalt, nearly devoid of olivine phenocrysts, was erupted from vents near Alae and Makaopuhi craters, followed shortly by eruption of picrite-basalt with abundant olivine phenocrysts from lower vents in eastern Puna. Olivine phenocrysts were inferred to have settled out of the upper part of the reservoir, which fed the upper vents, and accumulated in the lower part of the reservoir, which fed the lower vents.
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openalex_W2327009447 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Graeme A. Macdonald
Journal american journal of science
Year 1944
DOI
10.2475/ajs.242.4.177
URL
https://doi.org/10.2475/ajs.242.4.177
Keywords Keywords not found

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