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Publication details

Document type
Journal articles

Document subtype
Full paper

Title
Diapiric activity affecting Late Pliocene to Pleistocene sediments under a tectonic compressive regime: an example from the Western Iberian Margin (Srª da Vitória beach, central Portugal)

Participants in the publication
J. Cabral (Author)
Dep. Geologia
 IDL
 P. Ribeiro (Author)
A. Ramos (Author)
Pedro P. Cunha (Author)

Summary
The structural evolution of a folded and faulted Upper Pliocene to Lower Pleistocene sedimentary unit exposed at the coastal cliffs of Srª da Vitória beach was studied. This sequence is wedged between the S. Pedro de Moel diapir, to the north, and the Pombal–Leiria–Nazaré fault zone, to the south, providing striking evidence of neotectonic activity in the Western Iberian Margin and of its role in the triggering of halokinesis. Several deformational events were recognised, related to a regional NW–SE compression that activated halokinesis of underlying Triassic to Lower Jurassic (Hettangian) silty clays and gypsiferous marls. The combined effects of the compression and of the triggered halokinesis generated a NW-verging asymmetric syncline affecting the studied sedimentary unit, where strain was partially accommodated by faulting and crenulation in micaceous horizons of the sandy deposits. This deformation represents the local accommodation on the sedimentary cover of transpression along the S. Pedro de Moel fault, which was intruded by the Triassic to Hettangian evaporitic marls and silty clays, and reactivated with left-lateral reverse movement. This regional fault prolongs offshore, being parallel to other NE–SW trending faults that are located near the upper reach of the Nazaré submarine canyon, reinforcing the evidence for neotectonic activity on this major fault system of the Portuguese Atlantic margin.

Date of Submisson/Request
2017-06-21
Date of Acceptance
2018-06-15
Date of Publication
2018-06-21

Where published
Journal of Iberian Geology

Publication Identifiers
ISSN - 1698-6180

Publisher
Springer Nature

Volume
44
Number
3

Starting page
431
Last page
445

Document Identifiers
DOI - https://doi.org/10.1007/s41513-018-0073-3
URL - http://dx.doi.org/10.1007/s41513-018-0073-3

Rankings
Web Of Science Q3 (2018) - 0.929 - GEOLOGY - SCIE


Export

APA
J. Cabral, P. Ribeiro, A. Ramos, Pedro P. Cunha, (2018). Diapiric activity affecting Late Pliocene to Pleistocene sediments under a tectonic compressive regime: an example from the Western Iberian Margin (Srª da Vitória beach, central Portugal). Journal of Iberian Geology, 44, 431-445. ISSN 1698-6180. eISSN . http://dx.doi.org/10.1007/s41513-018-0073-3

IEEE
J. Cabral, P. Ribeiro, A. Ramos, Pedro P. Cunha, "Diapiric activity affecting Late Pliocene to Pleistocene sediments under a tectonic compressive regime: an example from the Western Iberian Margin (Srª da Vitória beach, central Portugal)" in Journal of Iberian Geology, vol. 44, pp. 431-445, 2018. 10.1007/s41513-018-0073-3

BIBTEX
@article{37389, author = {J. Cabral and P. Ribeiro and A. Ramos and Pedro P. Cunha}, title = {Diapiric activity affecting Late Pliocene to Pleistocene sediments under a tectonic compressive regime: an example from the Western Iberian Margin (Srª da Vitória beach, central Portugal)}, journal = {Journal of Iberian Geology}, year = 2018, pages = {431-445}, volume = 44 }