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Registros recuperados: 7
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Nouvelle carte bathymétrique au 1/100000 du banc de Gorringe (SW Portugal) ArchiMer
Beuzart, Paul; Le Lann, Alain; Monti, Serge; Auzende, Jean-marie.
A recent survey made with Seabeam allows us to present a bathymetric map (scale 1/100 000) of Gorringe Bank (SW Portugal). [NOT CONTROLLED OCR]
Tipo: Text Palavras-chave: Histoire Ifremer.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/1979/publication-5399.pdf
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Sampling and observation of oceanic mantle and crust on gorringe bank ArchiMer
Auzende, Jean-marie; Olivet, Jean-louis; Charvet, J; Le Lann, Alain; Le Pichon, Xavier; Monteiro, Jh; Nicolas, Anne; Ribeiro, A.
THE structure and nature of the uppermost oceanic mantle and crust has been, and still is, the subject of a major international research effort . Yet the direct field evidence known to us on this subject, whether obtained by drilling in the I.P.O.D. oceanic crust programme² or by submersible surveying in the Famous programme , has been either very incomplete or limited to the upper part of layer 2. As a result, the problem of the comparison between ophiolites and oceanic crust is still debated . We report here the preliminary results of an in situ geological survey in which we have sampled and observed what we believe to be an almost complete geological section starting a few kilometres below the Moho discontinuity and ending in the upper part of layer 2...
Tipo: Text
Ano: 1978 URL: http://archimer.ifremer.fr/doc/1978/publication-5230.pdf
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Le banc de Gorringe : résultats de la campagne Cyagor (août 1977) ArchiMer
Auzende, Jean-marie; Charvet, Jacques; Le Lann, Alain; Le Pichon, Xavier; Monteiro, José Hippolyte; Nicolas, Adolphe; Olivet, Jean-louis; Ribeiro, Antonio.
Gorringe bank is one of the structures which are found on the Europe-Africa plate boundary. It is located between Tagus abyssal plain in the North and Horseshoe plain in the South. It is oriented NE-SW and is in the exact prolongation of the large "tardi-hercynien" fractures which cross the iberian peninsula and its continental margin. Gorringe bank show two summits just under the sea levels, separated by a saddle. [NOT CONTROLLED OCR]
Tipo: Text Palavras-chave: Histoire Ifremer.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/1979/publication-5386.pdf
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Campagne CYAGOR - Submersible Cyana - 25 juillet-26 août 1977 ArchiMer
Le Lann, Alain; Auzende, Jean-marie; Olivet, Jean-louis.
We present in this paper raw data and preliminary results of CYAGOR dives (July-August 1977) on Gorringe bank (SW Portugal). A series of eight dives with submersible SP 3000 Cyana, from 2 600 to 40 m depth, enabled us to observe the outcrop of the bank flanks, a nearly complete cross-section of oceanic crust and upper mantle. The structure seems to be little affected by fracturing and is slightly rocked to the NE. Cross-sections made during the dives show characteristics similar to those of an ophiolitic complex.
Tipo: Text
Ano: 1979 URL: https://archimer.ifremer.fr/doc/00418/52940/53880.pdf
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Campagne ESTOCADE SUBMERSIBLE CYANA - 4-26 août 1976 ArchiMer
Roure, François; Monti, Serge; Le Lann, Alain.
Le dépouillement des 14 plongées profondes effectuées sur la marge proven­çale (canyons des Stoechades et de Saint-Tropez), au cours de la mission Estocade, est présenté ici. Les échantillons prélevés ont permis de dater de l'Oligo-Aquitanien une épaisse série terrigène (constituant les falaises de ces canyons), et du Pléistocène des grès et des conglomérats (limités au fond et aux parties basses des parois des ca­nyons). L'absence de dépôts miocènes et les formes d'érosion trouvées au sommet des conglomérats oligo-aquitaniens peuvent s'expliquer par un creusement subaérien des ca­nyons au Messinien.
Tipo: Text
Ano: 1978 URL: https://archimer.ifremer.fr/doc/00310/42122/41435.pdf
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Le banc de gorringe (sud-ouest du portugal), un fragment de manteau et de croûte océanique reconnu par submersible ArchiMer
Auzende, Jean-marie; Charvet, J; Le Lann, Alain; Lepichon, X; Monteiro, Jh; Nicolas, Anne; Olivet, Jean-louis; Ribeiro, A.
An almost complete geological section of the oceanic crust and upper mantle outcropping on the flanks of the Gorringe Bank has been surveyed during eight dives of SP 3000 Cyana submersible. The section which is slightly tilted to the east bears a close resemblance to an ophiolitic complex. [NOT CONTROLLED OCR]
Tipo: Text
Ano: 1977 URL: http://archimer.ifremer.fr/doc/1977/publication-5219.pdf
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Une étude géologique par submersible : le banc de gorringe (Atlantique du Nord-Est) ArchiMer
Le Lann, Alain.
C'est dans le but de définir la structure du banc qu'a eu lieu, en août 1977, une reconnaissance géologique avec le submersible CYANA, du Centre National pour l'Exploitation des Océans (campagne CYAGOR, Centre Océanologique de Bretagne). L'étude du Banc sera abordée après une description morphologique et géologique de la zone. Une étude géophysique permettra de replacer le Banc de Gorringe dans un contexte régional et ces deux premiers ensembles mettront en évidence que l'on ne peut pas dissocier le Banc de Gorringe et le domaine auquel il appartient, que ce soit dans la structure actuelle, ou dans leur évolution géologique.
Tipo: Text
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00034/14544/11811.pdf
Registros recuperados: 7
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