Benmoreite

Benmoreite is a silica-undersaturated volcanic rock of intermediate composition. It is a variant of trachyandesite and belongs to the alkalic suite of igneous rocks. An origin by fractionation from basanite through nepheline hawaiite to nepheline benmoreite has been demonstrated for a volcanic suite in the McMurdo Volcanic Group of late Cenozoic age in McMurdo Sound area.^[1] Nepheline benmoreite magmas derived from mantle sources containing lherzolite xenoliths display similarities to some plutonic nepheline syenites.^[2]

References

↑ Kyle, P. R.; Adams, J.; Rankin, P. C. (1979). "Geology and petrology of the McMurdo Volcanic Group at Rainbow Ridge, Brown Peninsula, Antarctica". Geological Society of America Bulletin. 90 (7): 676–688. doi:10.1130/0016-7606(1979)90<676:GAPOTM>2.0.CO;2.
↑ Green, D. H.; Edgar, A. D.; Beasley, P.; Kiss, E.; Ware, N. G. (1974). "Upper mantle source for some hawaiites, mugearites and benmoreites". Contributions to Mineralogy and Petrology. 48 (1): 33–43. doi:10.1007/BF00399108.

Volcanoes

Volcano types	Caldera Cinder cone Complex volcano Cryovolcano Fissure vent Lava cone Lava dome Maar Mud volcano Parasitic cone Pyroclastic cone Pyroclastic shield Rootless cone Shield volcano Somma volcano Stratovolcano Subglacial volcano Submarine volcano Supervolcano Volcanic cone Volcanic field (polygenetic · monogenetic)

Volcanic rocks	Volcanic rock Agglomerate Andesite Basalt Basaltic andesite Benmoreite Blairmorite Dacite Felsite Komatiite Latite Leucitite Nephelinite Obsidian Phonolite Phonotephrite Rhyodacite Rhyolite Tephriphonolite Trachyte Trachyandesite Trachybasalt Tuff

List and volcanoes groups	Lists of volcanoes Decade Volcanoes Volcanic belt

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