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Régimes des contraintes et volumes de relief dans l'est des Pyrénées/Stress regimes and volumes of reliefs in the Eastern Pyrenees

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Régimes des contraintes et volumes de relief dans l'est des Pyrénées

Stress regimes and volumes of reliefs in the Eastern Pyrenees

Marc Calvet*

Introduction

La genèse des grands reliefs est, au même titre que leur destruction et leur arasement, un thème majeur de la géomorphologie, mais un thème encore largement énig- matique. C'est que le protagoniste principal, la tectonique, est souvent invoqué sur un mode quelque peu incantatoire ou simplificateur. Les géomorphologues ont eu l'intuition précoce que le primat devait être accordé aux mouvements verticaux, sans pouvoir

*. Professeur à l'Université de Perpignan, "Médi-Terra", Département de Géographie, 52 avenue de Villeneuve, 66860 Perpignan, France et UPRES A 6042 "Géodynamique des milieux naturels et anthropisés", Université Biaise Pascal, Clermont-Ferrand.

Géomorphologie : relief, processus, environnement, 1999, n° 3, p. 253-278

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