Deep structure of the North Biscay margin and Armorican Basin.
Papers: Thinon I. et al. (2001) Déformations pyrénéennes dans le golfe de Gascogne. C. R. Acad. Sci. Paris, 332, 561-568; Thinon I. et al. (2002) La couverture sédimentaire syn-rift de la marge Nord-Gascogne et du Bassin Armoricain (Golfe de Gascogne) : à partir de nouvelles données de sismique réfl...
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1999
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Online Access: | https://theses.hal.science/tel-00605279 https://theses.hal.science/tel-00605279/document https://theses.hal.science/tel-00605279/file/PhD_Thinon_1999.pdf |
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ftbrgm:oai:HAL:tel-00605279v1 2024-05-19T07:45:34+00:00 Deep structure of the North Biscay margin and Armorican Basin. Structure profonde de la Marge Nord Gascogne et du Bassin Armoricain Thinon, Isabelle Bureau de Recherches Géologiques et Minières (BRGM) Université de Bretagne occidentale - Brest Jean-Pierre Réhault 1999-06-04 https://theses.hal.science/tel-00605279 https://theses.hal.science/tel-00605279/document https://theses.hal.science/tel-00605279/file/PhD_Thinon_1999.pdf fr fre HAL CCSD tel-00605279 https://theses.hal.science/tel-00605279 https://theses.hal.science/tel-00605279/document https://theses.hal.science/tel-00605279/file/PhD_Thinon_1999.pdf info:eu-repo/semantics/OpenAccess https://theses.hal.science/tel-00605279 Sciences de la Terre. Université de Bretagne occidentale - Brest, 1999. Français. ⟨NNT : ⟩ Bay of Biscay Rifting Crustal thinning Continental margin Ocean/Continent Transition zone Pyrenean deformation syn-rift sediments layer 3B Armorican Basin Golfe de Gascogne Bassin Armoricain Marge continentale amincissement crustal Transition Continent-Ocean déformation pyrénéenne sédiments syn-rift couche 3B [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/doctoralThesis Theses 1999 ftbrgm 2024-05-02T00:05:30Z Papers: Thinon I. et al. (2001) Déformations pyrénéennes dans le golfe de Gascogne. C. R. Acad. Sci. Paris, 332, 561-568; Thinon I. et al. (2002) La couverture sédimentaire syn-rift de la marge Nord-Gascogne et du Bassin Armoricain (Golfe de Gascogne) : à partir de nouvelles données de sismique réflexion. BSGF, t.173, n° 6, p.515-522; Thinon I. et al. (2003) Deep structure of the Armorican Basin (Bay of Biscay): A review from Norgasis seismic reflection and refraction data. Journal of the Geological Society of London, vol.160, n°1, p.99-116(18). The formation and the evolution of the North Biscay Margin are highly linked to the opening of the Bay of Biscay, the North Atlantic Ocean and the formation of the Pyrenean. The new compilation of old and new seismic data (reflection and refraction), in correlation with results of deep drillings and continental studies (for instance on Parentis Basin and Western Approaches Basin), enabled us to define the evolution (in time and space) of the sedimentary cover; construction of regional time and depth structure and isopach maps. Four tectonic phases are identified : two during the rifting (upper Jurassic and Aptian) and two during the pyrenean compression (upper Cretaceous/Palaeocene and Eocene). "Catastrophic" tectonic and sedimentary events have affected the margin during the end of the rifting. The 80 km wide Armorican Basin is a wide Continent/Ocean Transition zone with a substratum (layer with the velocities of 7.4-7.6 km/s), interpreted as serpentinized mantle, and covered by post-rift flat-lying sediments. This Cretaceous sedimentary basin collapses at the end of the rifting or during the initiation of the oceanic accretion. The distance between the true oceanic domain and the continental domain (not thinned) is constant along the whole margin. The crustal thinning happens exclusively under the narrow continental slope; tilted blocks, situated at the foot of the continental slope, seem to have a minor role in the processes of the crustal thinning. This geometry, ... Doctoral or Postdoctoral Thesis North Atlantic BRGM: HAL (Bureau de Recherches Géologiques et Minières) |
institution |
Open Polar |
collection |
BRGM: HAL (Bureau de Recherches Géologiques et Minières) |
op_collection_id |
ftbrgm |
language |
French |
topic |
Bay of Biscay Rifting Crustal thinning Continental margin Ocean/Continent Transition zone Pyrenean deformation syn-rift sediments layer 3B Armorican Basin Golfe de Gascogne Bassin Armoricain Marge continentale amincissement crustal Transition Continent-Ocean déformation pyrénéenne sédiments syn-rift couche 3B [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
Bay of Biscay Rifting Crustal thinning Continental margin Ocean/Continent Transition zone Pyrenean deformation syn-rift sediments layer 3B Armorican Basin Golfe de Gascogne Bassin Armoricain Marge continentale amincissement crustal Transition Continent-Ocean déformation pyrénéenne sédiments syn-rift couche 3B [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Thinon, Isabelle Deep structure of the North Biscay margin and Armorican Basin. |
topic_facet |
Bay of Biscay Rifting Crustal thinning Continental margin Ocean/Continent Transition zone Pyrenean deformation syn-rift sediments layer 3B Armorican Basin Golfe de Gascogne Bassin Armoricain Marge continentale amincissement crustal Transition Continent-Ocean déformation pyrénéenne sédiments syn-rift couche 3B [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
Papers: Thinon I. et al. (2001) Déformations pyrénéennes dans le golfe de Gascogne. C. R. Acad. Sci. Paris, 332, 561-568; Thinon I. et al. (2002) La couverture sédimentaire syn-rift de la marge Nord-Gascogne et du Bassin Armoricain (Golfe de Gascogne) : à partir de nouvelles données de sismique réflexion. BSGF, t.173, n° 6, p.515-522; Thinon I. et al. (2003) Deep structure of the Armorican Basin (Bay of Biscay): A review from Norgasis seismic reflection and refraction data. Journal of the Geological Society of London, vol.160, n°1, p.99-116(18). The formation and the evolution of the North Biscay Margin are highly linked to the opening of the Bay of Biscay, the North Atlantic Ocean and the formation of the Pyrenean. The new compilation of old and new seismic data (reflection and refraction), in correlation with results of deep drillings and continental studies (for instance on Parentis Basin and Western Approaches Basin), enabled us to define the evolution (in time and space) of the sedimentary cover; construction of regional time and depth structure and isopach maps. Four tectonic phases are identified : two during the rifting (upper Jurassic and Aptian) and two during the pyrenean compression (upper Cretaceous/Palaeocene and Eocene). "Catastrophic" tectonic and sedimentary events have affected the margin during the end of the rifting. The 80 km wide Armorican Basin is a wide Continent/Ocean Transition zone with a substratum (layer with the velocities of 7.4-7.6 km/s), interpreted as serpentinized mantle, and covered by post-rift flat-lying sediments. This Cretaceous sedimentary basin collapses at the end of the rifting or during the initiation of the oceanic accretion. The distance between the true oceanic domain and the continental domain (not thinned) is constant along the whole margin. The crustal thinning happens exclusively under the narrow continental slope; tilted blocks, situated at the foot of the continental slope, seem to have a minor role in the processes of the crustal thinning. This geometry, ... |
author2 |
Bureau de Recherches Géologiques et Minières (BRGM) Université de Bretagne occidentale - Brest Jean-Pierre Réhault |
format |
Doctoral or Postdoctoral Thesis |
author |
Thinon, Isabelle |
author_facet |
Thinon, Isabelle |
author_sort |
Thinon, Isabelle |
title |
Deep structure of the North Biscay margin and Armorican Basin. |
title_short |
Deep structure of the North Biscay margin and Armorican Basin. |
title_full |
Deep structure of the North Biscay margin and Armorican Basin. |
title_fullStr |
Deep structure of the North Biscay margin and Armorican Basin. |
title_full_unstemmed |
Deep structure of the North Biscay margin and Armorican Basin. |
title_sort |
deep structure of the north biscay margin and armorican basin. |
publisher |
HAL CCSD |
publishDate |
1999 |
url |
https://theses.hal.science/tel-00605279 https://theses.hal.science/tel-00605279/document https://theses.hal.science/tel-00605279/file/PhD_Thinon_1999.pdf |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
https://theses.hal.science/tel-00605279 Sciences de la Terre. Université de Bretagne occidentale - Brest, 1999. Français. ⟨NNT : ⟩ |
op_relation |
tel-00605279 https://theses.hal.science/tel-00605279 https://theses.hal.science/tel-00605279/document https://theses.hal.science/tel-00605279/file/PhD_Thinon_1999.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1799485656364220416 |