Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Artículo científico |
| Sprache: | en |
| Veröffentlicht: |
Universitat de Barcelona
2018
|
| Schlagworte: | |
| Online-Zugang: | https://www.redalyc.org/articulo.oa?id=50559030002 https://www.redalyc.org/journal/505/50559030002/ https://www.redalyc.org/journal/505/50559030002/html/ https://www.redalyc.org/journal/505/50559030002/50559030002.epub https://www.redalyc.org/journal/505/50559030002/movil https://doi.org/10.1344/GeologicaActa2018.16.4.2 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Inhaltsangabe:
- Deformation pattern around the Conejera fault blocks (Asturian Basin, North Iberian Margin) P. Granado S. Tavani N. Carrera J.A. Muñoz Ciencias de la Tierra Reactivation Asturian Basin Deformation patterns North Iberian Margin Conejera Fault blocks The Asturian Basin is located on the coastline of the North Iberian Margin. This basin is dissected by long-lived E-, NE- and NW-striking faults that delineate a series of extensional fault blocks that became shortened during the Upper Cretaceous to Cenozoic Alpine convergence. In the Conejera cove, the NE-striking and SE-dipping Conejera Fault displays a remarkable example of contractional deformation, promoted by the mechanical contrast within the Lower to Middle Jurassic stratigraphic series. Field observations and structural analysis carried out in this study reveal: i) a first system of orthogonal cross-joints oblique to the Conejera Fault and other major onshore boundary faults, ii) a second system of meso-extensional faults parallel to the Conejera Fault, and developed by the reactivation and linkage of the orthogonal cross-joints and iii) a series of contractional folds, thrusts and pressure solution with a predominant NE to ENE trend. Observed relationships and structural analysis suggest an obliquity between the here inferred direction of the Late Jurassic-Early Cretaceous stretching (i.e. about N015E) and the onshore boundary faults, whereas the contractional structures are broadly parallel to the NE-striking Conejera Fault and suggest a roughly SSE- to SE-oriented Alpine convergence. 2018 artículo científico 1695-6133 https://www.redalyc.org/articulo.oa?id=50559030002 https://www.redalyc.org/journal/505/50559030002/ https://www.redalyc.org/journal/505/50559030002/html/ https://www.redalyc.org/journal/505/50559030002/50559030002.epub https://www.redalyc.org/journal/505/50559030002/movil https://doi.org/10.1344/GeologicaActa2018.16.4.2 en http://www.redalyc.org/revista.oa?id=505 Geologica Acta: an international earth science journal application/pdf Universitat de Barcelona Geologica Acta: an international earth science journal (España) Num.4 Vol.16