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  1. No Access

    Article

    Eruptive history of an alkali basaltic diatreme from Elie Ness, Fife, Scotland

    The Elie Ness diatreme (Fife, Scotland) is an ideal place to study the internal architecture and emplacement processes of diatremes. Elie Ness is one of approximately 100 alkali basaltic diatremes and intrusio...

    T. M. Gernon, B. G. J. Upton, T. K. Hincks in Bulletin of Volcanology (2013)

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    Article

    The Mesoproterozoic Zig-Zag Dal basalts and associated intrusions of eastern North Greenland: mantle plume–lithosphere interaction

    The lavas of the Zig-Zag Dal Formation of eastern North Greenland constitute a Mesoproterozoic tholeiitic flood basalt succession up to 1,350 m thick, extending >10,000 km2, and underlain by a sill complex. U–Pb ...

    B. G. J. Upton, O. T. Rämö, L. M. Heaman… in Contributions to Mineralogy and Petrology (2005)

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    Article

    The petrology of the Ditrau alkaline complex, Eastern Carpathians

    ¶The Ditrau complex in eastern Transsylvania, Romania is a large (ca. 18 km diameter) Mesozoic alkaline igneous complex generated in an extensional environment associated with a rifted continental margin. It c...

    V. Morogan, B. G. J. Upton, J. G. Fitton in Mineralogy and Petrology (2000)

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    Article

    Sub-volcanic crystallization at Sete Cidades volcano, São Miguel, Azores, inferred from mafic and ultramafic plutonic nodules

    Suites of coarse-grained clasts (“plutonic nodules“) within the scoria of two separate mafic post-caldera parasitic vents, on Sete Cidades volcano, are described. These involve dunites, wehrlites, olivine clin...

    M. Mattiolil, B. G. J. Upton, A. Renzulli in Mineralogy and Petrology (1997)

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    Chapter

    Gabbroic, Syenogabbroic and Syenitic Cumulates of the Tugtutôq Younger Giant Dyke Complex, South Greenland

    The Tugtutôq Younger Giant Dyke Complex comprises an interconnecting suite of dykes, individually up to 800 m broad, traceable for some 145 km through a Proterozoic granitic terrain. The intrusion is thought t...

    B. G. J. Upton in Origins of Igneous Layering (1987)

  6. No Access

    Article

    Petrology and geochemistry of Rodrigues Island, Indian Ocean

    Rodrigues Island is composed of a differentiated series of transitional-mildly alkaline olivine basalts. The lavas contain phenocrysts of olivine (Fo88−68)±plagioclase (An73−50), together with a megacryst suite i...

    A. N. Baxter, B. G. J. Upton, W. M. White in Contributions to Mineralogy and Petrology (1985)

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    Chapter

    Oceanic Islands

    The floor of the Indian Ocean comprises a complex array of deep basins, separated by aseismic swells or ridges, in addition to the seismic Mid-Indian Ocean Ridge. While the “Ninetyeast Ridge” is wholly submari...

    B. G. J. Upton in The Ocean Basins and Margins (1982)

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    Chapter and Conference Paper

    The Gardar Igneous Province: Evidence for Proterozoic Continental Rifting

    Three principal episodes (at c. 1300, 1250 and 1170 Ma.) of faulting and associated alkaline magmatism are recognised in the evolution of the Gardar province in south Greenland.

    B. G. J. Upton, D. J. Blundell in Petrology and Geochemistry of Continental Rifts (1978)

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    Article

    The 1972 Eruption of Kartala volcano, grande comore

    A summit eruption of Kartala commenced on September 8th, 1972 and finished on October 5th, 1972. In the course of this eruption, approximately 5×106 m3 of alkali olivine basalt was erupted from a N-S fissure syst...

    B. G. J. Upton, W. J. Wadsworth, E. Latrille in Bulletin Volcanologique (1974)

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    Article

    Peridotitic and gabbroic rocks associated with the shield-forming lavas of réunion

    The peridotitic and gabbroic rocks described occur a) as a tectonically emplaced layered body in Piton des Neiges volcano, b) as blocks in basaltic agglomerate, Piton des Neiges, and c) as nodular inclusions i...

    B. G. J. Upton, W. J. Wadsworth in Contributions to Mineralogy and Petrology (1972)

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    Article

    Early volcanic rocks of réunion and their tectonic significance

    A great sequence of hydrothermally altered and tectonically disturbed lavas and breccias is exposed in the erosional cirques of Piton des Neiges volcano, Réunion. These rocks are cut by intense swarms of minor...

    B. G. J. Upton, W. J. Wadsworth in Bulletin Volcanologique (1969)

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    Article

    The basalts of Réunion Island, Indian Ocean

    Réunion consists of two shield volcanoes, Piton des Neiges (3069 m) and Piton de la Fournaise (2631 m). The former is extinct and deeply eroded, so that its internal structure is clearly displayed. The deepest...

    B. G. J. Upton, W. J. Wadsworth in Bulletin Volcanologique (1966)