Tectonic inversion of salt-detached ramp-syncline basins as illustrated by analog modeling and kinematic restoration.

Salt-detached ramp-syncline basins are developed in extensional settings and are characterized by wide synclinal sedimentary basins detached on salt and formed above the hanging wall of active ramp-flat-ramp extensional faults. They are rarely fault bounded; instead, they are bounded by salt structu...

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Autores: Roma, Maria, Vidal Royo, Oskar, McClay, K. R. (Kenneth R.), Ferrer García, J. Oriol (José Oriol), Muñoz, J. A.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Universidad de Barcelona
Repositorio:Dipòsit Digital de la UB
OAI Identifier:oai:diposit.ub.edu:2445/119136
Acceso en línea:https://hdl.handle.net/2445/119136
Access Level:acceso abierto
Palabra clave:Tectònica salina
Geologia estructural
Tectonique du sel
Structural geology
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spelling Tectonic inversion of salt-detached ramp-syncline basins as illustrated by analog modeling and kinematic restoration.Roma, MariaVidal Royo, OskarMcClay, K. R. (Kenneth R.)Ferrer García, J. Oriol (José Oriol)Muñoz, J. A.Tectònica salinaGeologia estructuralTectonique du selStructural geologySalt-detached ramp-syncline basins are developed in extensional settings and are characterized by wide synclinal sedimentary basins detached on salt and formed above the hanging wall of active ramp-flat-ramp extensional faults. They are rarely fault bounded; instead, they are bounded by salt structures that are in general parallel to the major subsalt structures. As such, the formation of these extensional systems requires the presence of (1) a subsalt extensional fault with significant dip changes and (2) an evaporitic unit above the extensional fault, which partially or completely decouples the basin from a subsalt extensional fault. Saltdetached ramp-syncline basins have a significant exploration potential when their extensional geometry is preserved and when they have undergone positive tectonic inversion and consequent uplift and fold amplification. However, in some cases, their subsalt geometry may not be fully recognizable, especially when subsalt seismic imaging is poor. To obtain a deeper understanding of the geometry and kinematic evolution of these salt-detached ramp-syncline basins, we performed a series of analog modeling experiments, in which the models' cross sections had been sequentially restored. Analog models and restoration results reveal that the kinematic evolution of the salt-detached ramp-syncline basins during extension and inversion depends on the interaction of different factors that may function simultaneously. Our results are used to improve the interpretation of seismic sections in inverted Mesozoic salt-detached ramp-syncline basins on the Atlantic margins, where subsalt faults are not well-imaged, and thus the suprasalt geometries must be used to infer the subsalt structure.Society of Exploration Geophysicists2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://hdl.handle.net/2445/119136Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)reponame:Dipòsit Digital de la UBinstname:Universidad de BarcelonaInglésReproducció del document publicat a: https://doi.org/10.1190/int-2017-0073.1Interpretation, 2018, vol. 6, num. 1, p. 127-144https://doi.org/10.1190/int-2017-0073.1(c) Society of Exploration Geophysicists, 2018info:eu-repo/semantics/openAccessoai:diposit.ub.edu:2445/1191362026-05-27T06:46:51Z
dc.title.none.fl_str_mv Tectonic inversion of salt-detached ramp-syncline basins as illustrated by analog modeling and kinematic restoration.
title Tectonic inversion of salt-detached ramp-syncline basins as illustrated by analog modeling and kinematic restoration.
spellingShingle Tectonic inversion of salt-detached ramp-syncline basins as illustrated by analog modeling and kinematic restoration.
Roma, Maria
Tectònica salina
Geologia estructural
Tectonique du sel
Structural geology
title_short Tectonic inversion of salt-detached ramp-syncline basins as illustrated by analog modeling and kinematic restoration.
title_full Tectonic inversion of salt-detached ramp-syncline basins as illustrated by analog modeling and kinematic restoration.
title_fullStr Tectonic inversion of salt-detached ramp-syncline basins as illustrated by analog modeling and kinematic restoration.
title_full_unstemmed Tectonic inversion of salt-detached ramp-syncline basins as illustrated by analog modeling and kinematic restoration.
title_sort Tectonic inversion of salt-detached ramp-syncline basins as illustrated by analog modeling and kinematic restoration.
dc.creator.none.fl_str_mv Roma, Maria
Vidal Royo, Oskar
McClay, K. R. (Kenneth R.)
Ferrer García, J. Oriol (José Oriol)
Muñoz, J. A.
author Roma, Maria
author_facet Roma, Maria
Vidal Royo, Oskar
McClay, K. R. (Kenneth R.)
Ferrer García, J. Oriol (José Oriol)
Muñoz, J. A.
author_role author
author2 Vidal Royo, Oskar
McClay, K. R. (Kenneth R.)
Ferrer García, J. Oriol (José Oriol)
Muñoz, J. A.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Tectònica salina
Geologia estructural
Tectonique du sel
Structural geology
topic Tectònica salina
Geologia estructural
Tectonique du sel
Structural geology
description Salt-detached ramp-syncline basins are developed in extensional settings and are characterized by wide synclinal sedimentary basins detached on salt and formed above the hanging wall of active ramp-flat-ramp extensional faults. They are rarely fault bounded; instead, they are bounded by salt structures that are in general parallel to the major subsalt structures. As such, the formation of these extensional systems requires the presence of (1) a subsalt extensional fault with significant dip changes and (2) an evaporitic unit above the extensional fault, which partially or completely decouples the basin from a subsalt extensional fault. Saltdetached ramp-syncline basins have a significant exploration potential when their extensional geometry is preserved and when they have undergone positive tectonic inversion and consequent uplift and fold amplification. However, in some cases, their subsalt geometry may not be fully recognizable, especially when subsalt seismic imaging is poor. To obtain a deeper understanding of the geometry and kinematic evolution of these salt-detached ramp-syncline basins, we performed a series of analog modeling experiments, in which the models' cross sections had been sequentially restored. Analog models and restoration results reveal that the kinematic evolution of the salt-detached ramp-syncline basins during extension and inversion depends on the interaction of different factors that may function simultaneously. Our results are used to improve the interpretation of seismic sections in inverted Mesozoic salt-detached ramp-syncline basins on the Atlantic margins, where subsalt faults are not well-imaged, and thus the suprasalt geometries must be used to infer the subsalt structure.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/2445/119136
url https://hdl.handle.net/2445/119136
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.1190/int-2017-0073.1
Interpretation, 2018, vol. 6, num. 1, p. 127-144
https://doi.org/10.1190/int-2017-0073.1
dc.rights.none.fl_str_mv (c) Society of Exploration Geophysicists, 2018
info:eu-repo/semantics/openAccess
rights_invalid_str_mv (c) Society of Exploration Geophysicists, 2018
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Society of Exploration Geophysicists
publisher.none.fl_str_mv Society of Exploration Geophysicists
dc.source.none.fl_str_mv Articles publicats en revistes (Dinàmica de la Terra i l'Oceà)
reponame:Dipòsit Digital de la UB
instname:Universidad de Barcelona
instname_str Universidad de Barcelona
reponame_str Dipòsit Digital de la UB
collection Dipòsit Digital de la UB
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300719

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