Deep origin and hot melting of an Archaean orogenic peridotite massif in Norway

Dirk Spengler (), Herman L. M. van Roermund, Martyn R. Drury, Luisa Ottolini, Paul R. D. Mason and Gareth R. Davies
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Dirk Spengler: Universiteit Utrecht
Herman L. M. van Roermund: Universiteit Utrecht
Martyn R. Drury: Universiteit Utrecht
Luisa Ottolini: Istituto di Geoscienze e Georisorse (IGG)-Sede di Pavia
Paul R. D. Mason: Universiteit Utrecht
Gareth R. Davies: Vrije Universiteit Amsterdam

Nature, 2006, vol. 440, issue 7086, 913-917

Abstract: Rock of ages Access to the deep Earth is not easy. But conveniently, a large fragment of the deep young Earth is available for study in Otrøy, western Norway. Kilometre-scale outcrops there derive from extreme depths of greater than 400 km. This cannot be explained by surface tectonics alone. The mantle rocks must have been exhumed in stages. First, mantle rock melting occured during upwelling from a depth of at least 350 km to 120 km. Then, after a pause of a billion years or so, a final tectonic skip and jump took it to the surface.

Date: 2006
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DOI: 10.1038/nature04644

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