Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 47013 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Deep-sea basins of the Atlantic ocean: The structure, time and mechanisms of their formation Deep-sea basins of the Atlantic ocean: The structure, time and mechanisms of their formation Pushcharovskii Yu M Pushcharovskii Yu M Geological Institute, Russian Academy of Sciences, Moscow, Russia ru Geological Institute, Russian Academy of Sciences, Moscow, Russia ru 6 2 133 152 10 11 2021 https://rjes.ru/en/nauka/article/47013/view

The aim of this project was to study the deep-sea basins of the Atlantic Ocean. Described in this paper are the morphology and deep crustal structure of the Argentine, Brazil, Cape, Angola, North American, Newfoundland, Canary, Sierra Leone, Iberia, and West-European basins. It is shown that they differ substantially in geological history. Also different are their internal structures. The subsidence of the respective segments of the Earth's crust took place not only following the spreading model, but also as a result of crustal extension between the spreading ridge and the continental margin, caused by the pulling apart of the continental blocks.

The aim of this project was to study the deep-sea basins of the Atlantic Ocean. Described in this paper are the morphology and deep crustal structure of the Argentine, Brazil, Cape, Angola, North American, Newfoundland, Canary, Sierra Leone, Iberia, and West-European basins. It is shown that they differ substantially in geological history. Also different are their internal structures. The subsidence of the respective segments of the Earth's crust took place not only following the spreading model, but also as a result of crustal extension between the spreading ridge and the continental margin, caused by the pulling apart of the continental blocks.

 deep-sea basins Atlantic ocean spreading model crustal extension spreading ridge continental margin. deep-sea basins Atlantic ocean spreading model crustal extension spreading ridge continental margin.

Bassetto, Atlantic Rifts and Continental Margin, 2000. Bassetto, Atlantic Rifts and Continental Margin, 2000. Byakov, Wide-Angle Deep Seismic Sounding in Sea Areas, Part II, Internal Structure of the Crust from Deep Seismic Multichannel Profiling, 2001. Byakov, Wide-Angle Deep Seismic Sounding in Sea Areas, Part II, Internal Structure of the Crust from Deep Seismic Multichannel Profiling, 2001. Chian, J. Geophys. Res., v. 104, no. B4, 1999., doi: 10.1029/1999JB900004 Chian, J. Geophys. Res., v. 104, no. B4, 1999., doi: 10.1029/1999JB900004 Clift, J. Geophys. Res., no. B11, 1999., doi: 10.1029/1999JB900247 Clift, J. Geophys. Res., no. B11, 1999., doi: 10.1029/1999JB900247 Collier, Geophys. J. Intern., v. 135, 1998., doi: 10.1046/j.1365-246X.1998.00675.x Collier, Geophys. J. Intern., v. 135, 1998., doi: 10.1046/j.1365-246X.1998.00675.x Dobretsov, Izv. Akad. Nauk SSSR, no. 8, 1991. Dobretsov, Izv. Akad. Nauk SSSR, no. 8, 1991. General Bathymetric Chart..., 1984. General Bathymetric Chart..., 1984. Initial Reports..., Initial Reports of the Deep-Sea Drilling Project, vol. 12, 1972. Initial Reports..., Initial Reports of the Deep-Sea Drilling Project, vol. 12, 1972. Initial Reports..., Initial Reports of the Deep-Sea Drilling Project, vol. 43, 1979. Initial Reports..., Initial Reports of the Deep-Sea Drilling Project, vol. 43, 1979. Kashintsev, Geotektonika, no. 2, 2001. Kashintsev, Geotektonika, no. 2, 2001. Khain, Tectonics of the Continents and Oceans, 2001. Khain, Tectonics of the Continents and Oceans, 2001. Krasheninnikov, Problems of Micropaleontology, 1978. Krasheninnikov, Problems of Micropaleontology, 1978. Marova, The volumes of volcanic seamounts in the Atlantic Ocean and the association of their distribution with the evolution of the oceanic lithosphere, depon. No. 768-B97, 1997. Marova, The volumes of volcanic seamounts in the Atlantic Ocean and the association of their distribution with the evolution of the oceanic lithosphere, depon. No. 768-B97, 1997. Mazarovich, Russian J. Earth Sci., v. 1, no. 3, 1999. Mazarovich, Russian J. Earth Sci., v. 1, no. 3, 1999. Mazarovich, Geotectonika, no. 3, 2002. Mazarovich, Geotectonika, no. 3, 2002. McCarthy, Geol. Soc. Am. Bull., v. 100, 1988., doi: 10.1130/0016-76061988100lt;1423:RMCSPWgt;2.3.CO;2 McCarthy, Geol. Soc. Am. Bull., v. 100, 1988., doi: 10.1130/0016-76061988100lt;1423:RMCSPWgt;2.3.CO;2 Neprochnov, Oceanology, v. 25, no. 2, 1985. Neprochnov, Oceanology, v. 25, no. 2, 1985. Neprochnov, Dokl. Rus. Akad. Nauk, v. 373, no. 6, 2000. Neprochnov, Dokl. Rus. Akad. Nauk, v. 373, no. 6, 2000. Noltimier, The Oceanic Basins and Margins, edited by A. E. M. Naim and F. G. Stehli, vol. 2, The North Atlantic, 1974. Noltimier, The Oceanic Basins and Margins, edited by A. E. M. Naim and F. G. Stehli, vol. 2, The North Atlantic, 1974. Pilipenko, Doklady Russ. Akad. Nauk, v. 330, no. 4, 1993. Pilipenko, Doklady Russ. Akad. Nauk, v. 330, no. 4, 1993. Pilipenko, Geotektonika, no. 1, 1994. Pilipenko, Geotektonika, no. 1, 1994. Pushcharovskii, Tectonics of the Atlantic Ocean with Elements of Nonlinear Geodynamics, 1994. Pushcharovskii, Tectonics of the Atlantic Ocean with Elements of Nonlinear Geodynamics, 1994. Pushcharovskii, Dokl. Rus. Akad. Nauk, v. 369, no. 4, 1998. Pushcharovskii, Dokl. Rus. Akad. Nauk, v. 369, no. 4, 1998. Pushcharovskii, The Basic Tectonic Features of the South Atlantic Ocean, 2002. Pushcharovskii, The Basic Tectonic Features of the South Atlantic Ocean, 2002. Pushcharovskii, Geotectonika, no. 5, 2002. Pushcharovskii, Geotectonika, no. 5, 2002. Pushcharovskii, Geotectonika, no. 5, 1985. Pushcharovskii, Geotectonika, no. 5, 1985. Pushcharovskii, Geotectonika, no. 2, 2003. Pushcharovskii, Geotectonika, no. 2, 2003. Pushcharovskii, Tectonic and Geodynamic Phenomena, 1997. Pushcharovskii, Tectonic and Geodynamic Phenomena, 1997. Raznitsyn, Doklady AN SSSR, v. 309, no. 3, 1989. Raznitsyn, Doklady AN SSSR, v. 309, no. 3, 1989. Raznitsyn, Tectonic and Geodynamic Phenomena, 1997. Raznitsyn, Tectonic and Geodynamic Phenomena, 1997. Sandwell, 2003. Sandwell, 2003. Schmincke, Earth Planet. Sci. Lett., v. 163, no. 1-4, 1998., doi: 10.1016/S0012-821X9800168-X Schmincke, Earth Planet. Sci. Lett., v. 163, no. 1-4, 1998., doi: 10.1016/S0012-821X9800168-X Steiner, Geol. Soc. Am. Bull, v. 110, 1998., doi: 10.1130/0016-76061998110lt;1304:MSOFCIgt;2.3.CO;2 Steiner, Geol. Soc. Am. Bull, v. 110, 1998., doi: 10.1130/0016-76061998110lt;1304:MSOFCIgt;2.3.CO;2 Udintsev, The Topography and Structure of Ocean Floors, 1987. Udintsev, The Topography and Structure of Ocean Floors, 1987. Whitmarsh, J. Geophys. Res., v. 101, no. B12, 1996., doi: 10.1029/96JB02579 Whitmarsh, J. Geophys. Res., v. 101, no. B12, 1996., doi: 10.1029/96JB02579 Zabanbark, Oceanology, v. 41, no. 1, 2001. Zabanbark, Oceanology, v. 41, no. 1, 2001.