Chemical variability in peralkaline magmas and magma reservoirs: insights from the Khaggiar lava flow, Pantelleria, Italy
Sign Up to like & getrecommendations! Published in 2020 at "Contributions to Mineralogy and Petrology"
DOI: 10.1007/s00410-020-01678-0
Abstract: Silicic volcanoes are increasingly understood to be underlain by crystal-rich and vertically extensive magma reservoirs within which disequilibrium is widespread. Observations from ignimbrite deposits demonstrate that silicic magma reservoirs are often compartmentalised and compositionally stratified.… read more here.
Keywords: magmas; magma reservoirs; peralkaline; magma ... See more keywords
Closed system fluid-mineral-mediated trace element behaviour in peralkaline rare metal pegmatites: Evidence from Strange Lake
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DOI: 10.1016/j.chemgeo.2018.12.023
Abstract: Abstract Large peralkaline complexes are ‘factories’ that have produced a variety of ‘exotic’ minerals including high field strength element minerals. In most cases, these minerals are secondary and crystallise in a hydrothermal paragenesis that is… read more here.
Keywords: system; peralkaline; pluton; alteration ... See more keywords
Petrogenesis of the Peralkaline Ignimbrites of Terceira, Azores
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DOI: 10.1093/petrology/egy012
Abstract: The recent (< 100 ka) volcanic stratigraphy of Terceira, Azores, includes at least seven peralkaline trachytic ignimbrite formations, attesting to a history of explosive eruptions. In this study, the petrogenesis and pre-eruptive storage conditions of… read more here.
Keywords: magmas; storage; ignimbrite forming; terceira azores ... See more keywords
Peralkaline Felsic Magmatism of the Atlantic Islands
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DOI: 10.3389/feart.2018.00145
Abstract: The oceanic-island magmatic systems of the Atlantic Ocean exhibit significant diversity in their respective sizes, ages, and the compositional ranges of the magmas they have produced. Nevertheless, almost all of the major Atlantic islands and… read more here.
Keywords: magmas; peralkaline felsic; magmatism; atlantic islands ... See more keywords