Granite magma formation, transport and emplacement in the Earth's crust
By N. Petford, A. Cruden, K. McCaffrey, J. Vigneresse. Nature, 2000
837 citations recorded by the source corpus.
The origin of granites was once a question solely for petrologists and geochemists. But in recent years a consensus has emerged that recognizes the essential role of deformation in the segregation, transport and emplacement of silica-rich melts in the continental crust. Accepted petrological models are being questioned, either because they require unrealistic rheological behaviours of rocks and magmas, or because they do not satisfactorily explain the available structural or geophysical data. Provided flow is continuous, mechanical considerations suggest that—far from being geologically sluggish—granite magmatism is a rapid, dynamic process operating at timescales of ≤100,000 years, irrespective of tectonic setting.
Subfields: Geophysics
View Paper: https://www.semanticscholar.org/paper/45292a5ba751caa24cacaba70d869ba89b11fc71
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In Geophysics
Citations in the corpus
- Melt Segregation in Deep Crustal Hot Zones: a Mechanism for Chemical Differentiation, Crustal Assimilation and the Formation of Evolved Magmas (2012, neutral): “1 has been proposed to explain the origin of evolved (granitic, sensu lato) magmas by numerous workers (e.g. Hodge, 1974; Pitcher, 1979, 1993; Chappell, 1984; Hildreth & Moorbath, 1988; Miller et al., 1988; Leake, 1990; Clarke, 1992; Atherton, 1993; Tepper et al., 1993; Brown, 1994; Petford, 1995; P”
- Physical controls and depth of emplacement of igneous bodies: A review (2011, background): “Incrementally growing plutons reconcile the apparent contradicting requisites of rapid magma emplacement, to prevent its freezing on its way from source region to emplacement level, and overall formation over large periods of time (Petford et al., 2000; Glazner et al., 2004).”
- Numerical models of crustal scale convection and partial melting beneath the Altiplano–Puna plateau (2002, background): “Melt accumulation and removal is modelled following the concept of percolation thresholds [43] [44].”
- Multiscale magmatic cyclicity, duration of pluton construction, and the paradoxical relationship between tectonism and plutonism in continental arcs (2011, methodology): “This period ended with the recognition of the essential role of deformation at all stages of magmatism (melting, segregation, transport, and emplacement), and the promotion of a new image of granitemagmatism as a rapid and dynamic process that can operate at timescales of less than 10(5) years, irre”