Contribution a l'etude tectonique et microtectonique des series cristallophylliennes du Rouergue oriental: la deformation des laccolites syntectoniques, type Pinet.

Translated title of the contribution: ( Tectonic and microtectonic study of the metamorphic series of the eastern Rouergue: the deformation of syntectonic laccoliths, France).

J. P. Burg, C. Teyssier

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

The E Rouergue (S Massif Central) consists of metamorphic terranes. A persistent granite body (Pinet Massif) was emplaced between the paragneiss series and schist and porphyroid series and apophyses or related bodies intruded both the two series. While the intruded series have been involved in a complex deformational history (three phases of successive deformation) during the Variscan Orogeny, only one heterogeneous planolinear fabric was formed in the laccoliths. A detailed analysis of finite strain is described and interpreted. On the basis of the deduced metamorphic history and the geometry of the internal plastic flow a hypothesis to explain the significance of the state of deformation of these rocks in a crustal evolution model where finite strain consists both of compressive and diapiric components is proposed.-after English summary

Translated title of the contribution( Tectonic and microtectonic study of the metamorphic series of the eastern Rouergue: the deformation of syntectonic laccoliths, France).
Original languageFrench
Pages (from-to)3-29
Number of pages27
JournalGeologie de la France
Volume1-2
StatePublished - Jan 1 1983
Externally publishedYes

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