The flyschs of Socoa

The fragment of Côte Basque that stretches from Saint Jean de Luz to Hendaye is lined with limestone named flyschs of Socoa. At the origin of these flyschs, the destabilization of marine sediments on the edge of the continental shelf and their slow accumulation along the continental slope during the 25 million years which preceded the famous K/T (Cretaceous-Tertiary) crisis - be the last mass extinction of animal and plant species that occurred 65 million years ago. The formation of the flyschs of Socoa actually testifies the movements of the Iberian and European plates which, a few million years later, gave rise to the formation of the current Pyrenees. So, these flyschs constitute the firstfruits of the Pyrenees. Their folds, their breaks, their faults, reflect the general uplift of the Pyrenees. Within a few thousand years, sea erosion will have completely transformed into fine particles these limestone cliffs whose thickness was previously close to 400 meters ...

The flyschs of Socoa


Information relating to this photography:
  • Photographic conditions : Lumix DMC-GF1 + Lens 20mm F1.7 - F/8 - 1/800 second - ISO 100
  • Processing tool of the photography : Silkypix Developper Studio 7.1.8
  • Optimization of displaying colors on screen : Firefox 30.0 + Module Color Management 0.5.3
Mots-clés : flyschs of Socoa, Basque coast, formation, marine sediments, surrection of the Pyrenees, effects of erosion