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Agulhas Plateau

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Series: Geological Society, London, Memoirs
Published: 01 January 2002
DOI: 10.1144/GSL.MEM.2002.022.01.20
EISBN: 9781862393974
... of seismic reflection lines from the southern Agulhas Plateau has been analysed. These show strong indications for the effect of bottom currents on sedimentation in the form of sediment drifts, channels, erosional unconformities and sediment waves. These observations have been used to infer the development...
FIGURES | View All (7)
Journal Article
Journal: Geology
Published: 01 October 1981
Geology (1981) 9 (10): 463–468.
...Richardson B. Allen; Brian E. Tucholke Abstract Seismic-refraction and seismic-reflection profiles reported elsewhere indicate that the Agulhas Plateau is a continental fragment that was rifted from the Falkland Plateau and intruded by basaltic magmas during the early opening of the South Atlantic...
Journal Article
Journal: GSA Bulletin
Published: 01 September 1977
GSA Bulletin (1977) 88 (9): 1337–1346.
...BRIAN E. TUCHOLKE; GEORGE B. CARPENTER Abstract Unconsolidated sediments on the Agulhas Plateau range in age from Maestrichian to Quaternary and consist of calcareous ooze. A composite sedimentary record from piston cores suggests three hiatuses in sedimentation which can be correlated with angular...
Journal Article
Journal: GSA Bulletin
Published: 01 June 1977
GSA Bulletin (1977) 88 (6): 749–763.
...DOUGLAS M. BARRETT Abstract Refraction data from the Agulhas Basin, south of southern Africa, show a crustal structure compatible with deep-water marine stations. Moho is about 10 km deep, and the crust is believed to be of oceanic origin. On the Agulhas Plateau, a basement layer having a seismic...
Image
Seismic line AWI-98015 on the southern <span class="search-highlight">Agulhas</span> <span class="search-highlight">Plateau</span>. The insert map show...
Published: 01 September 2007
Figure 4. Seismic line AWI-98015 on the southern Agulhas Plateau. The insert map shows the location of the line in white. Note the elongate drift east of the basement high. M= Maastrichtian, LE= Paleocene/Eocene boundary, LO= Early/Middle Oligocene, MM= Middle Miocene.
Image
Seismic line AWI-98017 on the central <span class="search-highlight">Agulhas</span> <span class="search-highlight">Plateau</span>. The insert map shows...
Published: 01 September 2007
Figure 5. Seismic line AWI-98017 on the central Agulhas Plateau. The insert map shows the location of the line in white. Note the sediment drift and the erosion. M= Maastrichtian, LE= Paleocene/Eocene boundary, LO= Early/Middle Oligocene, MM= Middle Miocene.
Image
—Part of seismic Line 10 along west side of <span class="search-highlight">Agulhas</span> <span class="search-highlight">Plateau</span> showing fault o...
Published: 01 January 1975
Fig. 35 —Part of seismic Line 10 along west side of Agulhas Plateau showing fault on smooth reflector. For position of profile see Figure 3 .
Image
—Part of seismic Line 10 along northwestern part of <span class="search-highlight">Agulhas</span> <span class="search-highlight">Plateau</span> showing...
Published: 01 January 1975
Fig. 34 —Part of seismic Line 10 along northwestern part of Agulhas Plateau showing smooth reflector between oceanic basement hills, and chaotic nature of sediments above smooth reflector. Strata beneath smooth reflector have compressive velocities ranging from 5.0 to 5.7 km/sec. For position
Journal Article
Journal: AAPG Bulletin
Published: 01 January 1975
AAPG Bulletin (1975) 59 (1): 3–59.
...Fig. 35 —Part of seismic Line 10 along west side of Agulhas Plateau showing fault on smooth reflector. For position of profile see Figure 3 . ...
FIGURES | View All (44)
Journal Article
Published: 01 September 2007
South African Journal of Geology (2007) 110 (2-3): 275–294.
...Figure 4. Seismic line AWI-98015 on the southern Agulhas Plateau. The insert map shows the location of the line in white. Note the elongate drift east of the basement high. M= Maastrichtian, LE= Paleocene/Eocene boundary, LO= Early/Middle Oligocene, MM= Middle Miocene. ...
FIGURES | View All (12)
Journal Article
Published: 01 September 2007
South African Journal of Geology (2007) 110 (2-3): 407–418.
...-onshore transect runs from the offshore Agulhas Plateau onto the South African coast, across the Cape Fold Belt, Beattie Magnetic Anomaly, the Karoo Basin, the Great Escarpment and into the Kaapvaal Craton. Among the number of geophysical measurements taken along the transect are two wide-angle on-shore...
FIGURES | View All (8)
Series: SEPM Special Publication
Published: 01 January 1974
DOI: 10.2110/pec.74.20.0006
EISBN: 9781565761506
... marginal to continents reflect varying geologic histories. For example, features such as the Blake Plateau, East Falkland Plateau, and Walvis Ridge show fossil evidence for having been considerably shallower than at present. Features such as the Agulhas Plateau and the Naturaliste Plateau, on the other...
Journal Article
Published: 01 December 2011
South African Journal of Geology (2011) 114 (3-4): 379–386.
...K. GOHL; G. UENZELMANN-NEBEN; N. GROBYS Abstract The Mozambique Ridge (MOZR) and the Agulhas Plateau (AP) are prominent bathymetrically elevated rises off south-eastern Africa connected by a rise of less bathymetric expression. Intuitively, this observation would imply that the plateaus and rises...
FIGURES | View All (5)
Image
Purple = oceanic-type crust. Green = attenuated continental-type crust. Yel...
Published: 01 June 2008
. Walvis Ridge and Agulhas Plateau are underlain by crustal roots having continental-type densities (though exact nature of crust is uncertain). Hence, using the term “attenuated continental crust” for the Walvis Ridge and Agulhas Plateau is not necessarily correct, but helps to denote the anomalous
Image
Reconstruction model for formation of the southeast African LIP between 120...
Published: 01 December 2011
Figure 5. Reconstruction model for formation of the southeast African LIP between 120 and 100 Ma. Dark grey areas of Mozambique Ridge (MOZR), Agulhas Plateau (AP), North-East Georgia Rise (NEGR), Maud Rise (MR) and the northern Astrid Ridge (AR) are fully developed oceanic plateau LIPs, while
Image
Map showing the bathymetry of the South African gateway ( Sandwell and Smit...
Published: 01 September 2007
– Benguela Current BC. AB= Agulhas Bank, APa= Agulhas Passage, APl= Agulhas Plateau, AR= Agulhas Ridge, CB= Cape Basin, MB= Mozambique Basin, MR= Mozambique Ridge, NV= Natal Valley, TB= Transkei Basin, sAB= south Agulhas Basin, wAB= west Agulhas Basin.
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Submarine <span class="search-highlight">plateaus</span> and ridges in the southwestern Indian Ocean illustrated ...
Published: 01 December 2011
deep crustal seismic profiles across the Agulhas Plateau (AP) by Gohl and Uenzelmann-Neben (2001) and Parsiegla et al. (2008) (thin dashed lines). Indicated are the two OBS stations from which data are shown in Figure 2 . The thick dotted line surrounds magmatic provinces we interpret to belong
Image
Figure 2. Reconstruction of southern Africa and Queen Maud Land, Antarctica...
Published: 01 June 2000
) . Agulhas Plateau is omitted because it is primarily oceanic in origin ( Uenzelmann-Neben et al., 1999 ). Other place names are given in Figure 1 .
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( a ) Bathymetric map from the southwest Indian Ocean ( Smith and Sandwell,...
Published: 01 December 2011
masses active in the South African gateway. AABW= Antarctic Bottom Water, AAIW= Antarctic Intermediate Water, AC= Agulhas Current, ACC= Antarctic Circumpolar Current, AP= Agulhas Plateau, AR= Astrid Ridge, MR= Maud Rise, MozR= Mozambique Ridge, NADW= North Atlantic Deep Water. ( b ) Salinity profile
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Relief map of southernmost Africa showing the elevations (bold numbers) of ...
Published: 01 June 2021
the east and west coasts, near Cape Town (CT) and Durban (Du). Inset shows the origin of this coastal region (black box) following Gondwana break-up and emplacement of the Agulhas Plateau and Mozambique Ridge (dark blue) at around 100 Ma (modified from Reeves et al., 2016 ).