Experimental investigation on granite emplacement during shortening. (Articolo in rivista)

Type
Label
  • Experimental investigation on granite emplacement during shortening. (Articolo in rivista) (literal)
Anno
  • 2010-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.tecto.2009.09.010 (literal)
Alternative label
  • Montanari D.; Corti G.; Sani F.; Del Ventisette C.; Bonini M.; Moratti G. (2010)
    Experimental investigation on granite emplacement during shortening.
    in Tectonophysics (Amst. Online)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Montanari D.; Corti G.; Sani F.; Del Ventisette C.; Bonini M.; Moratti G. (literal)
Pagina inizio
  • 147 (literal)
Pagina fine
  • 155 (literal)
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  • 484 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#note
  • In: Tectonophysics, vol. 484 (1-4) pp. 147 - 155. Elsevier, 2010. (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
  • Google Scholar (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Università degli Studi di Firenze, Dipartimento di Scienze della Terra Istituto di Geoscienze e Georisorse, Pisa IGG - Sezione di Firenze (literal)
Titolo
  • Experimental investigation on granite emplacement during shortening. (literal)
Abstract
  • We present analogue experiments performed to investigate the emplacement of granitic plutons in a shortening upper crust. The models were made of quartz-sand to simulate the brittle crust and a low-viscosity mixture of silicone and oleic acid to reproduce granitic magmas. Shortening of the models was obtained by a moving wall while a special injection apparatus allowed syn-kinematic magma intrusion from the base of the models. Experimental results show that: (1) space for intrusions is achieved during the movement along thrust faults and mostly coincides with low-pressure areas developed into the thrust-anticlines; (2) intrusion shapes are strictly dependent upon the competition between shortening rate (Sh) and injection rate (Inj). For high Sh/Inj values, plutons were elongated with the long axis parallel to the thrust surfaces; (3) magma migrates horizontally away from the injection point and towards the external sector in the direction of tectonic transport a longer distance for high Sh/Inj values; (4) syn-kinematic emplacement is also controlled by model thickness; an increase in this parameter results in an increase in the pluton plan-view aspect ratio. These results support that the final shape of orogenic plutons emplaced at shallow crustal levels may be strongly controlled by deformational features. (literal)
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