Paleogeographic evolution of a segmented oblique passive margin: the case of the SW Iberian margin

A. Ramos; O. Fernández; P. Terrinha; Josep Anton Muñoz; Arnaiz

doi:10.1007/s00531-020-01878-w

Paleogeographic evolution of a segmented oblique passive margin: the case of the SW Iberian margin

A. Ramos (Corresponding author)
, O. Fernández
, P. Terrinha
, Josep Anton Muñoz
, Arnaiz

Department of Geology

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

The SW Iberian margin is an oblique passive margin developed during the Mesozoic, as part of the opening of the westernmost Ligurian Tethys. The Algarve Basin developed on the SW Iberian margin and its sedimentary record was strongly controlled by tectonics. The Algarve Basin was dominated during the Mesozoic by WSW–ENE trending extensional faults and their associated depocenters, segmented by oblique NW–SE transfer zones. Two major NW–SE trending transfer zones connected the Algarve Basin to the Gorringe Bank in the west and to the Betic Basin in the east. The SW Iberian margin was later inverted during Late Cretaceous to Cenozoic times, due to convergence between Africa and Iberia. Inversion of the Algarve Basin and the SW Iberian margin was controlled by both the WSW–ENE and NW–SE trending structures formed during the passive margin phase. The evolution of the Algarve Basin during the Mesozoic and up to the Paleogene is documented in this paper through paleogeographic reconstructions based on field geology and reinterpretation of offshore seismic and well data.

Original language	English
Pages (from-to)	1871-1895
Number of pages	25
Journal	International Journal of Earth Sciences
Volume	109
Issue number	6
DOIs	https://doi.org/10.1007/s00531-020-01878-w
Publication status	Published - 1 Sept 2020

Funding

The authors would like to thank to Niko Froitzheim and two anonymous reviewers who provided helpful and constructive comments and suggestions that largely improved the manuscript. This study was funded by Repsol Exploración (Madrid) and partially financially supported by the SALTECRES project (CGL2014-54118-C2-1-R MINECO/FERDER, UE) and the Geodinàmica i Anàlisi de Conques research group (2014SGR467) from the Agència de Gestió d’Ajuts Universitaris i de Recerca and the Secretaria d’Universitats i Recerca del Departament d’Economia i Coneixement de la Generalitat de Catalunya. Adrià Ramos thanks Repsol Exploración for his Ph.D grant. The authors wish to thank Repsol Exploración and Partex-Oil&Gas for permission to present this work, and Portugal Exploration Team for his support and enthusiasm. We also want to thank Schlumberger and PETEX Ltd for Petrel and MOVE academic licenses respectively. This work was possible thanks to Repsol and Partex-Oil&Gas, providing us proprietary vintage 2D seismic data and a 3D seismic cube, allowing us to publish it. TGS provided us the seismic survey PDT00-PD00, also allowing to publish the results that emerge from its interpretation.

Austrian Fields of Science 2012

105106 Geodynamics
105103 Petroleum geology
105121 Sedimentology

Keywords

Margin inversion
Oblique passive margin
Paleogeography
SW Iberian margin
Tethys–Atlantic link

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title = "Paleogeographic evolution of a segmented oblique passive margin: the case of the SW Iberian margin",

abstract = "The SW Iberian margin is an oblique passive margin developed during the Mesozoic, as part of the opening of the westernmost Ligurian Tethys. The Algarve Basin developed on the SW Iberian margin and its sedimentary record was strongly controlled by tectonics. The Algarve Basin was dominated during the Mesozoic by WSW–ENE trending extensional faults and their associated depocenters, segmented by oblique NW–SE transfer zones. Two major NW–SE trending transfer zones connected the Algarve Basin to the Gorringe Bank in the west and to the Betic Basin in the east. The SW Iberian margin was later inverted during Late Cretaceous to Cenozoic times, due to convergence between Africa and Iberia. Inversion of the Algarve Basin and the SW Iberian margin was controlled by both the WSW–ENE and NW–SE trending structures formed during the passive margin phase. The evolution of the Algarve Basin during the Mesozoic and up to the Paleogene is documented in this paper through paleogeographic reconstructions based on field geology and reinterpretation of offshore seismic and well data.",

keywords = "Margin inversion, Oblique passive margin, Paleogeography, SW Iberian margin, Tethys–Atlantic link",

author = "A. Ramos and O. Fern{\'a}ndez and P. Terrinha and Mu{\~n}oz, \{Josep Anton\} and Arnaiz",

year = "2020",

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T1 - Paleogeographic evolution of a segmented oblique passive margin

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AU - Ramos, A.

AU - Fernández, O.

AU - Terrinha, P.

AU - Muñoz, Josep Anton

AU - Arnaiz, null

PY - 2020/9/1

Y1 - 2020/9/1

N2 - The SW Iberian margin is an oblique passive margin developed during the Mesozoic, as part of the opening of the westernmost Ligurian Tethys. The Algarve Basin developed on the SW Iberian margin and its sedimentary record was strongly controlled by tectonics. The Algarve Basin was dominated during the Mesozoic by WSW–ENE trending extensional faults and their associated depocenters, segmented by oblique NW–SE transfer zones. Two major NW–SE trending transfer zones connected the Algarve Basin to the Gorringe Bank in the west and to the Betic Basin in the east. The SW Iberian margin was later inverted during Late Cretaceous to Cenozoic times, due to convergence between Africa and Iberia. Inversion of the Algarve Basin and the SW Iberian margin was controlled by both the WSW–ENE and NW–SE trending structures formed during the passive margin phase. The evolution of the Algarve Basin during the Mesozoic and up to the Paleogene is documented in this paper through paleogeographic reconstructions based on field geology and reinterpretation of offshore seismic and well data.

AB - The SW Iberian margin is an oblique passive margin developed during the Mesozoic, as part of the opening of the westernmost Ligurian Tethys. The Algarve Basin developed on the SW Iberian margin and its sedimentary record was strongly controlled by tectonics. The Algarve Basin was dominated during the Mesozoic by WSW–ENE trending extensional faults and their associated depocenters, segmented by oblique NW–SE transfer zones. Two major NW–SE trending transfer zones connected the Algarve Basin to the Gorringe Bank in the west and to the Betic Basin in the east. The SW Iberian margin was later inverted during Late Cretaceous to Cenozoic times, due to convergence between Africa and Iberia. Inversion of the Algarve Basin and the SW Iberian margin was controlled by both the WSW–ENE and NW–SE trending structures formed during the passive margin phase. The evolution of the Algarve Basin during the Mesozoic and up to the Paleogene is documented in this paper through paleogeographic reconstructions based on field geology and reinterpretation of offshore seismic and well data.

KW - Margin inversion

KW - Oblique passive margin

KW - Paleogeography

KW - SW Iberian margin

KW - Tethys–Atlantic link

UR - https://www.scopus.com/pages/publications/85085479773

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M3 - Article

AN - SCOPUS:85085479773

SN - 1437-3254

VL - 109

SP - 1871

EP - 1895

JO - International Journal of Earth Sciences

JF - International Journal of Earth Sciences

IS - 6

ER -

Paleogeographic evolution of a segmented oblique passive margin: the case of the SW Iberian margin

Abstract

Funding

Austrian Fields of Science 2012

Keywords

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