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- W4248973974 abstract "The Meana Sardo Unit (MSU) shows trains of asymmetric SW-verging folds, developed during the thickening stage and nappe development of the Variscan belt in Sardinia. The geometry of the folds and the finite strain analysis results in the hinge of a kilometric fold give information on the folding mechanisms. The strain and the geometry of the fold have been compared to a 2-D geometrical model of development of homogenous non-coaxial deformation. The results show that initial layer parallel shortening and fold amplification followed by simple shearing or by coeval simple and pure shearing, linked to the overthrust of the Low Grade Metamorphic Complex of Barbagia onto MSU, are able to explain the observed fold geometries and finite strain values. To cite this article: R. Carosi et al., C. R. Geoscience 336 (2004). L'Unité de Meana Sardo (UMS) est caractérisée par des systèmes de plis asymétriques à vergence sud–ouest, formés pendant la phase d'épaississement de la croûte et de développement des nappes de la chaı̂ne varisque en Sardaigne. La géométrie des plis ainsi que l'analyse de la déformation finie fournissent des informations sur les mécanismes de plissement. Ces données ont été confrontées avec un modèle géométrique 2-D de développement de la déformation homogène non coaxiale. Les résultats montrent qu'un raccourcissement initial parallèle au litage, suivi par un développement des plis et un cisaillement simple ou par une déformation coaxiale et non coaxiale simultanée (ce dernier étant mis en relation avec le chevauchement du Complexe métamorphique de bas degré de la Barbagia sur l'UMS) sont capables d'expliquer les plis observés et les déformations mesurées. Pour citer cet article : R. Carosi et al., C. R. Geoscience 336 (2004)." @default.
- W4248973974 created "2022-05-12" @default.
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- W4248973974 date "2004-05-01" @default.
- W4248973974 modified "2023-10-18" @default.
- W4248973974 title "Asymmetric fold development in the Variscan Nappes of central Sardinia (Italy)" @default.
- W4248973974 doi "https://doi.org/10.1016/s1631-0713(04)00106-3" @default.
- W4248973974 hasPublicationYear "2004" @default.
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