(Article of periodic en Russe - 1990)

Document title

Morfostruktura dna jugo-zapadnoj Atlantiki i morja Skotija (Russe)
Morphostructure du fond du Sud-Ouest de l'Atlantique et de la mer de la Scotia

published at :
Biologičeskie i geologičeskie issledovanija dna okeana v Južnoj Atlantike (Russe)
Etudes biologiques et géologiques du fond de l'océan dans l'Atlantique Sud

Authors(s) and Affiliation(s)



Morphostructural transformation and stages of the geological history of the Scotia Sea were studied in connection with spreading of the Mid-Scotia Ridge, which has undergone a series of evolutionary cycles during the movement of the ancient South-American and Antarctic lithospheric plates and young Scotia plate. The opening of the Scotia Sea (South Antillean basin) had taken place at 30-31 m.y. ago; the Drake Strait―at 20-23 m.y. At the same time the Antarctic Circumpolar Current―the dominant features of the Southern Ocean circulation―was arised. Investigation carried out during cruises of the r/v « Academic Kurchatov » (1985) and the r/v « Dmitry Mendeleev » (1989) permitted to reveal principal geomorphological properties of the South-Antillean basin, its bordering ridges and Mid-Scotia Ridge. One more ridge of mid-oceanic type was created in eastern part of the Scotia Sea about 7 m.y. ago (Late Miocene). Some new transform faults were discovered. A new morphostructural map of South-West Atlantic Ocean and Scotia Sea was compiled. - (L'A.)


Thematical fascicle

published at : Trudy Instituta okeanologii im. P.P. Sirsova / ISSN 0375-8419

Editor : Nauka, Moskva - URSS (1946)

Millesime : 1990, vol. 126 [pp. 137-171]

Bibliographic references : 36 réf.




Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 1993.
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