Vlasovite from Ascension Island, Saint Helena， Ascension and Tristan da Cunha

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Saint Helena， Ascension and Tristan da Cunha
ⓘ Ascension Island	Woolley, Alan R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe (excluding the former USSR), Australasia and Oceanic Islands. The Geological Society of London. doi:10.1144/mpar4 Jicha, B. R., Singer, B. S., & Valentine, M. J. (2013). 40Ar/39Ar geochronology of subaerial Ascension Island and a re-evaluation of the temporal progression of basaltic to rhyolitic volcanism. Journal of Petrology, 54(12), 2581-2596. doi.org/10.1093/petrology/egt058 Kar, A., Weaver, B.L., Davidson, J., Colucci, M. (1998) Origin of differentiated volcanic and plutonic rocks from Ascension Island, South Atlantic Ocean. Journal of Petrology: 39(5): 1009-1024. doi.org/10.1093/petroj/39.5.1009 Weaver, B.L., Kar, A., Davidson, J., Colucci, M. (1996) Geochemical characteristics of volcanic rocks from Ascension Island, South Atlantic Ocean. Geothermics: 25(4-5): 449-470. Harris, C., Sheppard, S.M.F. (1987) Magma and fluid evolution in the lavas and associated granite xenoliths of Ascension Island. In: Alkaline Igneous Rocks (Fitton, J.G., Upton, B.G.J. eds.), Geological Society of London: Special Publication 30: 269-272. Weaver, B.L., Wood, D.A., Tarney, J., Joron, J.-L. (1987) Geochemistry of ocean island basalts from the South Atlantic Ocean: Ascension, Bouvet, St. Helena, Gough and Tristan da Cunha. In: Alkaline Igneous Rocks (Fitton, J.G., Upton, B.G.J. eds.), Geological Society of London: Special Publication 30: 253-267. Weis, D., Demaiffe, D., Cauet, S., Javoy, M. (1987) Sr, Nd, O and H isotopic ratios in Ascension Island lavas and plutonic inclusions Harris, C. (1985) Guano-derived rare earth-rich phosphatic amygdales in gabbroic inclusions from Ascension Island. Earth and Planetary Science Letters: 72(1): 141-148. Sheppard, S.M.F., Harris, C. (1985) Hydrogen and oxygen isotope geochemistry of Ascension Island lavas and granites: Variation with crystal fractionation and interaction with sea water. Contributions to Mineralogy and Petrology: 91(1): 74-81. Harris, C. (1983) The petrology of lavas and associated plutonic inclusions of Ascension Island. Journal of Petrology: 24(4): 424-470. doi.org/10.1093/petrology/24.4.424
ⓘ Green Mountain	rruff.geo.arizona.edu (n.d.) http://rruff.geo.arizona.edu/doclib/mm/vol36/MM36_233.pdf