The role of tectonic inheritance in the morphostructural evolution of the Galicia continental margin and adjacent abyssal plains from digital bathymetric model (DBM) analysis (NW Spain)
Acceso electrónico sólo desde el IGME The identification of recent major tectonic structures in the Galicia continental margin and adjacent abyssal plains was carried out by means of a quantitative analysis of the linear structures having bathymetric expression on the seabed. It was possible to iden...
Published in: | International Journal of Earth Sciences |
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ftcsic:oai:digital.csic.es:20.500.12468/752 2023-05-15T17:36:27+02:00 The role of tectonic inheritance in the morphostructural evolution of the Galicia continental margin and adjacent abyssal plains from digital bathymetric model (DBM) analysis (NW Spain) Maestro González, Adolfo Jané Sánchez, Gloria Llave Barranco, Estefanía López Martínez, Jerónimo Bohoyo Muñoz, Fernando Druet Vélez, María Instituto Geológico y Minero de España, España Ministerio de Economía y Competitividad, España Galicia, España 2020-12-23T05:27:15Z https://hdl.handle.net/20.500.12468/752 https://doi.org/10.1007/s00531-017-1531-4 en eng Springer #PLACEHOLDER_PARENT_METADATA_VALUE# IGME- 2476 CTM2011-13367-E CGL2016-80445-R https://link.springer.com/article/10.1007/s00531-017-1531-4 International Journal of Earth Sciences, vol. 107, 1267–1286 1437-3262 http://hdl.handle.net/20.500.12468/752 https://doi.org/10.1007/s00531-017-1531-4 open digital bathymetric model fault reactivation Galicia continental margin lineaments morphostructure Postprint 2020 ftcsic https://doi.org/20.500.12468/752 https://doi.org/10.1007/s00531-017-1531-4 2022-07-05T23:39:09Z Acceso electrónico sólo desde el IGME The identification of recent major tectonic structures in the Galicia continental margin and adjacent abyssal plains was carried out by means of a quantitative analysis of the linear structures having bathymetric expression on the seabed. It was possible to identify about 5800 lineaments throughout the entire study area, of approximately 271,500 km2. Most lineaments are located in the Charcot and Coruña highs, in the western sector of the Galicia Bank, in the area of the Marginal Platforms and in the northern sector of the margin. Analysis of the lineament orientations shows a predominant NE–SW direction and three relative maximum directions: NW–SE, E–W and N–S. The total length of the lineaments identified is over 44,000 km, with a mode around 5000 m and an average length of about 7800 m. In light of different tectonic studies undertaken in the northwestern margin of the Iberian Peninsula, we establish that the lineaments obtained from analysis of the digital bathymetric model of the Galicia continental margin and adjacent abyssal plains would correspond to fracture systems. In general, the orientation of lineaments corresponds to main faults, tectonic structures following the directions of ancient faults that resulted from late stages of the Variscan orogeny and Mesozoic extension phases related to Triassic rifting and Upper Jurassic to Early Cretaceous opening of the North Atlantic Ocean. The N–S convergence between Eurasian and African plates since Palaeogene times until the Miocene, and NW–SE convergence from Neogene to present, reactivated the Variscan and Mesozoic fault systems and related physiography. Departamento de Geología y Geofísica, Instituto Geológico y Minero de España, España Departamento de Geología y Geoquímica, Universidad Autónoma de Madrid, España Other/Unknown Material North Atlantic Digital.CSIC (Spanish National Research Council) Charcot ENVELOPE(139.017,139.017,-69.367,-69.367) International Journal of Earth Sciences 107 4 1267 1286 |
institution |
Open Polar |
collection |
Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
topic |
digital bathymetric model fault reactivation Galicia continental margin lineaments morphostructure |
spellingShingle |
digital bathymetric model fault reactivation Galicia continental margin lineaments morphostructure Maestro González, Adolfo Jané Sánchez, Gloria Llave Barranco, Estefanía López Martínez, Jerónimo Bohoyo Muñoz, Fernando Druet Vélez, María The role of tectonic inheritance in the morphostructural evolution of the Galicia continental margin and adjacent abyssal plains from digital bathymetric model (DBM) analysis (NW Spain) |
topic_facet |
digital bathymetric model fault reactivation Galicia continental margin lineaments morphostructure |
description |
Acceso electrónico sólo desde el IGME The identification of recent major tectonic structures in the Galicia continental margin and adjacent abyssal plains was carried out by means of a quantitative analysis of the linear structures having bathymetric expression on the seabed. It was possible to identify about 5800 lineaments throughout the entire study area, of approximately 271,500 km2. Most lineaments are located in the Charcot and Coruña highs, in the western sector of the Galicia Bank, in the area of the Marginal Platforms and in the northern sector of the margin. Analysis of the lineament orientations shows a predominant NE–SW direction and three relative maximum directions: NW–SE, E–W and N–S. The total length of the lineaments identified is over 44,000 km, with a mode around 5000 m and an average length of about 7800 m. In light of different tectonic studies undertaken in the northwestern margin of the Iberian Peninsula, we establish that the lineaments obtained from analysis of the digital bathymetric model of the Galicia continental margin and adjacent abyssal plains would correspond to fracture systems. In general, the orientation of lineaments corresponds to main faults, tectonic structures following the directions of ancient faults that resulted from late stages of the Variscan orogeny and Mesozoic extension phases related to Triassic rifting and Upper Jurassic to Early Cretaceous opening of the North Atlantic Ocean. The N–S convergence between Eurasian and African plates since Palaeogene times until the Miocene, and NW–SE convergence from Neogene to present, reactivated the Variscan and Mesozoic fault systems and related physiography. Departamento de Geología y Geofísica, Instituto Geológico y Minero de España, España Departamento de Geología y Geoquímica, Universidad Autónoma de Madrid, España |
author2 |
Instituto Geológico y Minero de España, España Ministerio de Economía y Competitividad, España |
format |
Other/Unknown Material |
author |
Maestro González, Adolfo Jané Sánchez, Gloria Llave Barranco, Estefanía López Martínez, Jerónimo Bohoyo Muñoz, Fernando Druet Vélez, María |
author_facet |
Maestro González, Adolfo Jané Sánchez, Gloria Llave Barranco, Estefanía López Martínez, Jerónimo Bohoyo Muñoz, Fernando Druet Vélez, María |
author_sort |
Maestro González, Adolfo |
title |
The role of tectonic inheritance in the morphostructural evolution of the Galicia continental margin and adjacent abyssal plains from digital bathymetric model (DBM) analysis (NW Spain) |
title_short |
The role of tectonic inheritance in the morphostructural evolution of the Galicia continental margin and adjacent abyssal plains from digital bathymetric model (DBM) analysis (NW Spain) |
title_full |
The role of tectonic inheritance in the morphostructural evolution of the Galicia continental margin and adjacent abyssal plains from digital bathymetric model (DBM) analysis (NW Spain) |
title_fullStr |
The role of tectonic inheritance in the morphostructural evolution of the Galicia continental margin and adjacent abyssal plains from digital bathymetric model (DBM) analysis (NW Spain) |
title_full_unstemmed |
The role of tectonic inheritance in the morphostructural evolution of the Galicia continental margin and adjacent abyssal plains from digital bathymetric model (DBM) analysis (NW Spain) |
title_sort |
role of tectonic inheritance in the morphostructural evolution of the galicia continental margin and adjacent abyssal plains from digital bathymetric model (dbm) analysis (nw spain) |
publisher |
Springer |
publishDate |
2020 |
url |
https://hdl.handle.net/20.500.12468/752 https://doi.org/10.1007/s00531-017-1531-4 |
op_coverage |
Galicia, España |
long_lat |
ENVELOPE(139.017,139.017,-69.367,-69.367) |
geographic |
Charcot |
geographic_facet |
Charcot |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
#PLACEHOLDER_PARENT_METADATA_VALUE# IGME- 2476 CTM2011-13367-E CGL2016-80445-R https://link.springer.com/article/10.1007/s00531-017-1531-4 International Journal of Earth Sciences, vol. 107, 1267–1286 1437-3262 http://hdl.handle.net/20.500.12468/752 https://doi.org/10.1007/s00531-017-1531-4 |
op_rights |
open |
op_doi |
https://doi.org/20.500.12468/752 https://doi.org/10.1007/s00531-017-1531-4 |
container_title |
International Journal of Earth Sciences |
container_volume |
107 |
container_issue |
4 |
container_start_page |
1267 |
op_container_end_page |
1286 |
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1766135943926906880 |