Basement blocks and tecto-sedimentary evolution in the Pyrenees during Mesozoic times
- 1 July 1984
- journal article
- research article
- Published by Cambridge University Press (CUP) in Geological Magazine
- Vol. 121 (5), 397-405
- https://doi.org/10.1017/s0016756800029927
Abstract
The Alpine tectonics in the Pyrenean Range is controlled by motions of basement blocks (High Primary Range, North Pyrenean blocks). These blocks belong to different tectonic units; they are amygdaloid, wedge-shaped, squeezed at their roots, upthrust and displaced with their cover (detached or not) in a convergent shear zone between the European and Iberian plates. These basement blocks are distributed within isopic (isofacial) units with diachronous terrigenous prisms. The stratigraphical analysis of their Mesozoīc cover reveals their relative position during the Mid-Cretaceous continental break-up which induced the separation of the two previously joined plates.Keywords
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