Paul ANGRAND

Kinematic reconstruction of Iberia

Supervisor:
Frédéric Mouthereau
GET CNRS Université Toulouse 3 Paul Sabatier

Major Results

I worked on a kinematic reconstruction of the W Neotethys-N Atlantic region since the late Permian. We show that the late Permian-Triassic geodynamics has a fundamental influence on the later extension and convergence. Strike-slip faulting associated with the evolution of the W Neotethys controlled the development of the subsequent Atlantic rift.

Abstract

The W European (W Neotethys-N Atlantic region) kinematic evolution results from the opening of the western Neotethys and the Atlantic oceans in the late Paleozoic and the Mesozoic. Iberia recorded the propagation of these two oceanic systems. The late Permian-Triassic Iberian rift basins have accommodated extension, but this tectonic stage is often neglected in most plate kinematic models, leading to the overestimation of the movements between Iberia and Europe during the Early Cretaceous rift phase.

We propose a kinematic model of Iberia that accounts for both the Neotethyan and Atlantic evolutions. The plate boundary between Europe and Africa is made of distinct crustal domains connected by deformed areas, which have been subjected to strain partitioning associated with oblique and orthogonal extension and compression during the early Mesozoic and Cenozoic, respectively.

Large-scale reconstruction of the Tethys–Atlantic area for the 270 Ma (a), 180 Ma (b), 140 Ma (c), and 100 Ma (d) periods. Modified from Angrand et al., 2020, Solid Earth.

Large-scale vertical movements in Cenomanian to Santonian carbonate platform in Iberia: Markers of Coniacian initiation of Pyrenean convergence?

Andrieu, S., Saspiturry, N., Lartiguau, M., Issautier, B., Angrand, P., lasseur, E. (2020): Large-scale vertical movements in Cenomanian to Santonian carbonate plateform in Iberia: Markers of Coniacian initiation of Pyrenean convergence?. BSGF OROGEN Sp. Issue.

A reconstruction of Iberia accounting for Western Tethys/N-Atlantic kinematics since the late Permian-Triassic

Angrand, P., Mouthereau, F., Masini, E., Asti, R. (2020). A reconstruction of Iberia accounting for W-Tethys/N-Atlantic kinematics since the late Permian-Triassic. Solid Earth, European Geosciences Union, inPress, ⟨10.5194/se-2020-24⟩. ⟨insu-02865944⟩

keywords: plate kinematics, Iberia, Mesozoic Cenozoic, Geodynamics, Ebro block, Central Iberian Range, Pyrenees

DOI: https://dx.doi.org/10.5194/se-2020-24

Tectono‐stratigraphic and thermal evolution of the western Betic flysch: implications for the geodynamics of South Iberian margin and Alboran Domain

Daudet, M., Mouthereau, F., Brichau, S., Crespo‐Blanc, A., Gautheron, C., Angrand, P. (2020). Tectono‐stratigraphic and thermal evolution of the western Betic flysch: implications for the geodynamics of South Iberian margin and Alboran Domain Tectonics 39(7)
keywords: plate kinematics, Iberia, Mesozoic Cenozoic, subduction, Marocco, Rif
DOI: https://dx.doi.org/10.1029/2020tc006093