![]() Tectonophysics 312:331–345īenn K, Odonne F, de Saint Blanquat M (1998) Pluton emplacement during transpression in brittle crust: new views from analogue experiments. J Geol Soc 160(3):435–445Īrchanjo CJ, da Silva ER, Caby R (1999) Magnetic fabric and pluton emplacement in a transpressive shear zone system: the Itaporanga pophyritic granitic pluton (northeast Brazil). Kluwer, Dordrecht, pp 215–229Īranguren A, Cuevas J, Tubia JM, Román-Berdiel T, Casas-Sainz A, Casas-Ponsati A (2003) Granite laccolith emplacement in the Iberian arc: AMS and gravity study of the La Tojiza pluton (NW Spain). In: Bouchez JL, Hutton DHW, Stephens WE (eds) Granite: from segregation of melt to emplacement fabrics, vol 8. Acta Universitatis Upsaliensis, Comprehensive summaries of Uppsala dissertations from the Faculty of Science and TechnologyĪranguren A, Larrea FJ, Carracedo M, Cuevas J, Tubia JM (1997) The Los Pedroches batholith (Southern Spain): polyphase interplay between shear zones in transtension and setting of granites. Terra Nova 12:149–155Īnma R (1997) Yakushima: an island arc pluton above a subduction zone. We argue that active and pre-existing flats-and-ramps thrusts provide a preferential continuous planar anisotropy susceptible to become a granitic magma migration pathway.Īcocella V (2000) Space accommodation by roof lifting during pluton emplacement at Amiata (Italy). The abundance of subhorizontal and tabular granitic intrusions indicates that the location of inflating granitic sills along thrust flats can be common. In addition, a review of literature demonstrates a spatial and causal relationship between granites and thrusts and highlights the geometric control of magma pathways in the pluton final shape. The experimental results also allow the evaluation of the role played by magma viscosity in determining pluton geometries. This phenomenon occurs for both low-viscosity magma (basalts to andesite) and high-viscosity magma (dry granite). ![]() In light of new experimental models, we show that magma can rise along thrusts ramps and flats. We address both cases where contractional tectonics and magma intrusion are (1) coeval, to study how active contractional tectonics controls the transport of magma, and (2) diachronous, to study the role of pre-existing structures on the transport of magma. This paper investigates the influence exerted by brittle tectonic structures in the emplacement of granite plutons in contractional settings.
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