Matches in SemOpenAlex for { <https://semopenalex.org/work/W2147469829> ?p ?o ?g. }
- W2147469829 endingPage "368" @default.
- W2147469829 startingPage "355" @default.
- W2147469829 abstract "The opening of the Central Atlantic Ocean basin that separated North America from northwest Africa is well documented and assumed to have started during the Late Jurassic. However, the early evolution and the initial breakup history of Pangaea are still debated: most of the existing models are based on one or multiple ridge jumps at the Middle Jurassic leaving the oldest crust on the American side, between the East Coast Magnetic Anomaly (ECMA) and the Blake Spur Magnetic Anomaly (BSMA). According to these hypotheses, the BSMA represents the limit of the initial basin and the footprint subsequent to the ridge jump. Consequently, the evolution of the northwest African margin is widely different from the northeast American margin. However, this setting is in contradiction with the existing observations. In this paper, we propose an alternative scenario for the continental breakup and the Mesozoic spreading history of the Central Atlantic Ocean. The new model is based on an analysis of geophysical data (including new seismic lines, an interpretation of the newly compiled magnetic data, and satellite derived gravimetry) and recently published results which demonstrate that the opening of the Central Atlantic Ocean started already during the Late Sinemurian (190 Ma), based on a new identification of the African conjugate to the ECMA and on the extent of salt provinces off Morocco and Nova Scotia. The identification of an African conjugate magnetic anomaly to BSMA, the African Blake Spur Magnetic Anomaly (ABSMA), together with the significant change in basement topography, are in good agreement with that initial reconstruction. The early opening history for the Central Atlantic Ocean is described in four distinct phases. During the first 20 Myr after the initial breakup (190–170 Ma, from Late Sinemurian to early Bajocian), oceanic accretion was extremely slow (∼ 0.8 cm/y). At the time of Blake Spur (170 Ma, early Bajocian), a drastic change occurred both in the relative plate motion direction (from NNW–SSE to NW–SE) and in the spreading rate (an increase to ∼ 1.7 cm/y). After a small increase between Chron M25 (∼ 154 Ma, Kimmeridgian) and Chron M22 (∼ 150 Ma, Tithonian), the spreading rate slowed down to about 1.3 cm/y and remained fairly constant until Chron M0 (125 Ma, Barremian–Aptian boundary). In addition, kinematic reconstructions illustrate a significant spreading asymmetry during the early history of the Central Atlantic Ocean; the accretion rates were higher on the American side and led to the formation of more oceanic crust on this plate. We infer that this asymmetry could be related to the fact that the thermal anomaly responsible for the significant magmatism of the Central Atlantic Magmatic Province (CAMP) was preferentially located below the African plate." @default.
- W2147469829 created "2016-06-24" @default.
- W2147469829 creator A5002329171 @default.
- W2147469829 creator A5056478507 @default.
- W2147469829 creator A5066879572 @default.
- W2147469829 creator A5082691088 @default.
- W2147469829 date "2010-09-01" @default.
- W2147469829 modified "2023-10-15" @default.
- W2147469829 title "An alternative early opening scenario for the Central Atlantic Ocean" @default.
- W2147469829 cites W1965814220 @default.
- W2147469829 cites W1976761898 @default.
- W2147469829 cites W1982003609 @default.
- W2147469829 cites W1984974891 @default.
- W2147469829 cites W1989457346 @default.
- W2147469829 cites W1992196318 @default.
- W2147469829 cites W1994969303 @default.
- W2147469829 cites W1995607130 @default.
- W2147469829 cites W2002603359 @default.
- W2147469829 cites W2013539586 @default.
- W2147469829 cites W2013547155 @default.
- W2147469829 cites W2014348125 @default.
- W2147469829 cites W2015211013 @default.
- W2147469829 cites W2015255716 @default.
- W2147469829 cites W2015817301 @default.
- W2147469829 cites W2015876749 @default.
- W2147469829 cites W2017337805 @default.
- W2147469829 cites W2020518963 @default.
- W2147469829 cites W2026425563 @default.
- W2147469829 cites W2026527329 @default.
- W2147469829 cites W2028032600 @default.
- W2147469829 cites W2029153218 @default.
- W2147469829 cites W2031030702 @default.
- W2147469829 cites W2032322665 @default.
- W2147469829 cites W2033223278 @default.
- W2147469829 cites W2036066930 @default.
- W2147469829 cites W2042274367 @default.
- W2147469829 cites W2043645529 @default.
- W2147469829 cites W2052199633 @default.
- W2147469829 cites W2055422110 @default.
- W2147469829 cites W2056694957 @default.
- W2147469829 cites W2076514905 @default.
- W2147469829 cites W2076833330 @default.
- W2147469829 cites W2086558702 @default.
- W2147469829 cites W2087239287 @default.
- W2147469829 cites W2087459468 @default.
- W2147469829 cites W2089683255 @default.
- W2147469829 cites W2089808263 @default.
- W2147469829 cites W2103196931 @default.
- W2147469829 cites W2104299443 @default.
- W2147469829 cites W2104915444 @default.
- W2147469829 cites W2115135275 @default.
- W2147469829 cites W2116033897 @default.
- W2147469829 cites W2123786602 @default.
- W2147469829 cites W2128932472 @default.
- W2147469829 cites W2135070575 @default.
- W2147469829 cites W2166013233 @default.
- W2147469829 cites W2170417410 @default.
- W2147469829 cites W2171797089 @default.
- W2147469829 cites W2325339734 @default.
- W2147469829 cites W2326420242 @default.
- W2147469829 cites W2974031284 @default.
- W2147469829 cites W4238075456 @default.
- W2147469829 doi "https://doi.org/10.1016/j.epsl.2010.06.024" @default.
- W2147469829 hasPublicationYear "2010" @default.
- W2147469829 type Work @default.
- W2147469829 sameAs 2147469829 @default.
- W2147469829 citedByCount "226" @default.
- W2147469829 countsByYear W21474698292012 @default.
- W2147469829 countsByYear W21474698292013 @default.
- W2147469829 countsByYear W21474698292014 @default.
- W2147469829 countsByYear W21474698292015 @default.
- W2147469829 countsByYear W21474698292016 @default.
- W2147469829 countsByYear W21474698292017 @default.
- W2147469829 countsByYear W21474698292018 @default.
- W2147469829 countsByYear W21474698292019 @default.
- W2147469829 countsByYear W21474698292020 @default.
- W2147469829 countsByYear W21474698292021 @default.
- W2147469829 countsByYear W21474698292022 @default.
- W2147469829 countsByYear W21474698292023 @default.
- W2147469829 crossrefType "journal-article" @default.
- W2147469829 hasAuthorship W2147469829A5002329171 @default.
- W2147469829 hasAuthorship W2147469829A5056478507 @default.
- W2147469829 hasAuthorship W2147469829A5066879572 @default.
- W2147469829 hasAuthorship W2147469829A5082691088 @default.
- W2147469829 hasBestOaLocation W21474698292 @default.
- W2147469829 hasConcept C111368507 @default.
- W2147469829 hasConcept C11171543 @default.
- W2147469829 hasConcept C127313418 @default.
- W2147469829 hasConcept C151730666 @default.
- W2147469829 hasConcept C154200439 @default.
- W2147469829 hasConcept C15744967 @default.
- W2147469829 hasConcept C165205528 @default.
- W2147469829 hasConcept C194482375 @default.
- W2147469829 hasConcept C2777871205 @default.
- W2147469829 hasConcept C32277403 @default.
- W2147469829 hasConcept C58097730 @default.
- W2147469829 hasConcept C77928131 @default.
- W2147469829 hasConcept C8058405 @default.