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Central Bransfield Basin

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Series: Geological Society, London, Special Publications
Published: 01 January 2018
DOI: 10.1144/SP461.10
EISBN: 9781786203427
... on the lower continental slope of the Antarctic Peninsula (Central Bransfield Basin). Continuous instability dynamics over time is inferred to have affected the palaeo-trough-mouth fans present in the study area. The depositional architecture and the outstanding relief of the Gebra Valley, which is the most...
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Series: Geological Society, London, Memoirs
Published: 01 January 2016
EISBN: 9781862397088
.... 2011 ). Bransfield Basin is a 35 000 km 2 , SW–NE-orientated marginal basin situated between the South Shetland Islands (SSI) and the NAP and adjacent islands (Fig. 1 a). BB consists of three sub-basins, the main one being the 1950 m deep Central Bransfield Basin (CBB) which is 215 km long...
Journal Article
Journal: Geology
Published: 01 July 2002
Geology (2002) 30 (7): 603–606.
... shelf in the Central Bransfield Basin represents a depositional segment of the LGM subglacial system off the mouths of the glacial troughs. Till streamlines are indicated by sets of parallel to subparallel mega-scale ridges and grooves (known as bundle structures after Canals et al., 2000 ) extending...
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Journal Article
Journal: Geology
Published: 01 February 2003
Geology (2003) 31 (2): 107–110.
... refraction ocean-bottom seismograph profiles in the strait demonstrate that crustal thickness in the deep central basin increases from northeast to southwest, from ∼10 km to ∼14–16 km. This confirms multichannel seismic interpretation of upper crustal structures suggesting that the Bransfield basin...
FIGURES
Journal Article
Journal: Geology
Published: 01 November 2000
Geology (2000) 28 (11): 1043–1046.
... to this boundary (focal mechanisms 8, 12, 15, 17, 21, and 22). 3—Central Bransfield region: only focal mechanisms inside basin have been considered (focal mechanisms 2, 9, 10, and 19). 4—Elephant Island region (focal mechanisms 1, 3, 6, and 18). Right dihedra diagrams show percentages of dihedra in compression...
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Series: Geological Society, London, Memoirs
Published: 01 January 2016
EISBN: 9781862397088
... et al. 2009 ; Benn & Evans 2010 ). Although kettle holes have been described extensively in terrestrial glacial landscapes, few have been identified in submarine environments (e.g. Bennett et al. 2009 ). Here we present a high-resolution bathymetric dataset from central Bransfield Basin...
Series: Geological Society, London, Special Publications
Published: 01 January 2015
DOI: 10.1144/SP401.6
EISBN: 9781862396777
... abruptly towards the SW along the Hero Fracture Zone, whereas the NE limit is more gradual and is defined by the Shackleton Fracture Zone, Southwestern Scotia plate ( González-Casado et al. 2000 ). Morphologically, it is divided into the western, central and eastern Bransfield sub-basins, which...
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Image
Figure 1. <b>Bransfield</b> Strait, West Antarctica, showing bathymetry (color, 10...
in > Geology
Published: 01 February 2003
Figure 1. Bransfield Strait, West Antarctica, showing bathymetry (color, 100 m contours), refraction profiles (black lines), and ocean-bottom seismograph positions (red dots) in central Bransfield basin (CBB). Northeast-southwest–trending neovolcanic edifices occur between Bridgeman and Deception
Journal Article
Published: 01 December 1982
Journal of the Geological Society (1982) 139 (6): 787–801.
... of collisions starting at the base of the peninsula SO Ma ago. Following each collision, spreading and subduction both stopped. Opposite the South Shetland trench and actively extending Bransfield Strait, spreading also stopped 4 Ma ago, but before the spreading centre reached the trench. The tendency...
Journal Article
Published: 01 December 1982
Journal of the Geological Society (1982) 139 (6): 691–700.
... Peninsula can be linked in broad terms to the progressive northwards subduction of sections of the Aluk Ridge during the Cenozoic. Extensional tectonics within and behind the main igneous belts caused the development of narrow back-arc basins in southern Chile during the Mesozoic and in Bransfield Strait...
Journal Article
Published: 06 January 2020
Journal of the Geological Society (2020) jgs2019-130.
... have developed in modern subduction zones (e.g., the Okinawa Trough and the Bransfield Strait). How could a continental back-arc basin develop in the NQT, central Tibetan Plateau? What factors initiated back-arc rifting and controlled the generation of the back-arc basin? Combining the results...
Journal Article
Published: 01 April 1994
Journal of the Geological Society (1994) 151 (2): 291–305.
... Palacozoic-Early Mesozoic marginal basins along the active southern continental margin of Eurasia: evidence from the Central Pontides (Turkey) and adjacent regions. Geological Journal Ustaömer T. Robertson A.H.F. Yilmaz Y. Palacotethyan tectonic evolution of the Central Pontides...
Journal Article
Published: 01 June 2016
Journal of Sedimentary Research (2016) 86 (6): 712–733.
... Hernandez-Romano et al. (1997). Time-equivalent Early Cretaceous sedimentary basins, if they exist, along the margin of central Mexico are not available for study as a result of Cenozoic volcanic cover, but Early Cretaceous basins of southern Mexico offer great potential for improved contextual...
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Journal Article
Journal: Geology
Published: 01 June 2006
Geology (2006) 34 (6): 497–500.
..., California ( Council and Bennett, 1993 ). From the CaCO 3 -H 2 O phase diagram, ikaite should not exist at ocean temperatures and pressures ( Marland, 1975 ; Bischoff et al., 1993 ). Nonetheless, ikaite crystals are found in organic-rich ocean sediments from the Bransfield Strait ( Suess et al., 1982 ), Sea...
FIGURES
Image
Figure 3. Spatial variations in crustal thickness (color) in <b>central</b> Bransf...
in > Geology
Published: 01 February 2003
Figure 3. Spatial variations in crustal thickness (color) in central Bransfield basin (CBB). Crust thins from southwest to northeast, consistent with northeast to southwest rift propagation ( Barker and Austin, 1998 ). Thinnest crust is ∼9–10 km beneath northeast-central CBB, ∼25% thicker than
Series: Geological Society, London, Special Publications
Published: 01 January 2006
DOI: 10.1144/GSL.SP.2006.260.01.17
EISBN: 9781862395084
..., there is evidence from adjacent areas of further north–verging displacement in the Mid-Eocene. In general, the south-vergent thrusts are capped by clastic units of Late Eocene age (Çankin Basin; Central Pontides), which are interpreted to post-date final suturing of the Northern Neotethys. These Eocene and younger...
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Journal Article
Published: 01 September 1987
Journal of the Geological Society (1987) 144 (5): 773–786.
..., in light of other facets of regional geology and possible palaeogeographic configurations, that this pattern reflects a back-arc basin in the Northern Belt, margined by a volcanic arc massif which once occupied the space now represented by the shear zone, and a fore-arc basin to the SE (Central...
Journal Article
Published: 01 December 1991
Journal of the Geological Society (1991) 148 (6): 959–971.
... 6 1990 7 6 1991 © Geological Society of London 1991 1991 Geological Society of London References Atherton M. P. Warden V. Sanderson L.M. Pitcher W. S. Atherton M. P. Cobbing E. J. Beckinsale R. D. The Mesozoic marginal basin of Central Peru...
Journal Article
Published: 13 July 2001
Canadian Journal of Earth Sciences (2001) 38 (7): 1037–1057.
...T.E. Smith; M.J. Harris; C.H. Huang; and Holm Abstract Two bimodal mafic–silicic suites of igneous rocks, the Sharbot Lake volcanic rocks and the Lavant Igneous Complex, are identified geochemically in the Sharbot Lake domain of the Central Metasedimentary Belt in Ontario, and their genesis...
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Image
Figure 4. Subglacial deposystem model of continental margin west of norther...
in > Geology
Published: 01 July 2002
Figure 4. Subglacial deposystem model of continental margin west of northern Antarctic Peninsula, within Central Bransfield Basin.