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South Shetland Trench

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Series: Geological Society, London, Memoirs
Published: 27 May 2021
DOI: 10.1144/M55-2018-37
EISBN: 9781786209863
... Abstract Young volcanic centres of the Bransfield Strait and James Ross Island occur along back-arc extensional structures parallel to the South Shetland island arc. Back-arc extension was caused by slab rollback at the South Shetland Trench during the past 4 myr. The variability of lava...
FIGURES | View All (16)
Journal Article
Journal: Geology
Published: 01 November 2000
Geology (2000) 28 (11): 1043–1046.
... boundary, the South Shetland Trench, where the Antarctic and the Phoenix plates meet. New geophysical and structural data discussed in this paper show that the basin opening is related to a sinistral simple-shear couple between the Scotia and the Antarctic plates, and not to the previously suggested...
FIGURES | View All (4)
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...
Series: AAPG Studies in Geology
Published: 01 January 1990
DOI: 10.1306/St31524C2
EISBN: 9781629811284
... Abstract Application of sequence stratigraphic concepts to seismic reflection profiles from the Bransfield Basin indicates that this modern backarc basin began to form during the waning stages of subduction at the South Shetland Trench at about 4 Ma. Two distinct systems tracts stack to form...
Image
Figure 1. Study area physiography and figure locations. Foredeepened glacia...
Published: 01 November 2005
—Palmer Deep; RI—Robertson Island; SSI—South Shetland Island; SST—South Shetland Trench; VI—Vega Island; St—Strait; T—trough.
Image
Figure 1. Bathymetry in Drake Passage predicted using satellite altimetry (...
Published: 01 July 2000
—Shackleton Fracture Zone; SST—South Shetland Trench; WSR—West Scotia Ridge.
Image
Simplified geological setting (a) and geological map of Gibbs Island (b). (...
Published: 13 December 2021
, KGI = King George Island, LI = Livingstone Island, NSR = North Scotia Ridge, PiB = Pirie Bank, PBs = Powell Basin, SI = Smith Island, SGI = South Georgia Island, SSR = South Scotia Ridge, SOIs = South Orkney Islands, SSaIs = South Sandwich Islands, SSIs = South Shetland Islands, SST = South Shetland
Image
Figure 1. Bransfield Strait, West Antarctica, showing bathymetry (color, 10...
Published: 01 February 2003
Islands (BI, DI). Progression from shallowest water in western Bransfield basin (WBB), to stepwise deepening of CBB to northeast, and rhomb-shaped deeps in eastern Bransfield basin (EBB) suggests basinwide structural control. Inset: Bransfield Strait is inboard of South Shetland Trench, between Hero
Journal Article
Journal: Geology
Published: 01 February 2003
Geology (2003) 31 (2): 107–110.
... Islands (BI, DI). Progression from shallowest water in western Bransfield basin (WBB), to stepwise deepening of CBB to northeast, and rhomb-shaped deeps in eastern Bransfield basin (EBB) suggests basinwide structural control. Inset: Bransfield Strait is inboard of South Shetland Trench, between Hero...
FIGURES
Series: GSA Special Papers
Published: 01 January 1984
DOI: 10.1130/SPE200-p1
... Metamorphic and sedimentary rocks of the South Orkney and South Shetland island groups and the northern tip of the Antarctic Peninsula appear to represent the products of subduction-related accretion and of sedimentation respectively in a forearc environment along the Pacific margin...
Journal Article
Published: 01 December 1996
Journal of the Geological Society (1996) 153 (6): 1011–1020.
... of the Bransfield Basin constitute the southeastern boundary of the South Shetland block. Part of this fault system determines the straight southeastern margin of Livingston island and is referred to here as the Bransfield master-fault zone (Fig. 2 ) . To the NW the South Shetland trench separates the South...
Journal Article
Journal: Geology
Published: 01 July 2000
Geology (2000) 28 (7): 607–610.
...—Shackleton Fracture Zone; SST—South Shetland Trench; WSR—West Scotia Ridge. ...
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Series: Geological Society, London, Memoirs
Published: 27 May 2021
DOI: 10.1144/M55-2018-52
EISBN: 9781786209863
... by numerous faults and structure is locally complex, with local tilting and folding ( Smellie et al. 1984 ). Birkenmajer (1989 , 1992 ) proposed that King George Island is composed of four differentially uplifted blocks bounded by trench-parallel faults. Extensional faulting in the South Shetland Islands...
FIGURES | View All (10)
Journal Article
Published: 01 January 1962
Geological Magazine (1962) 99 (1): 85–91.
... underlying the Scotia sea has become more sialic. A further eastward advance of the already modified Pacific crust by the development of volcanic island arcs in the South Shetland and south Sandwich islands probably took place in the late Tertiary." GeoRef, Copyright 2004, American Geological Institute...
Journal Article
Published: 01 March 2004
Bulletin de la Société Géologique de France (2004) 175 (2): 131–145.
...Alain Demant*; Stéphanie Touron; Henriette Lapierre; Delphine Bosch Abstract On Byers Peninsula, the largest summer ice-free area in the South Shetland Islands, a thick Upper Jurassic-Lower Cretaceous sedimentary sequence and penecontemporaneous igneous activity records the progressive emersion...
Journal Article
Journal: GSA Bulletin
Published: 01 April 2000
GSA Bulletin (2000) 112 (4): 611–627.
..., as suggested previously on the basis of geophysical models. No continental separation occurred to the east of Marie Byrd Land. The margins of the Thurston Island and Antarctic Peninsula crustal blocks went directly from convergent to inactive, except at the northernmost tip of the peninsula, where the South...
FIGURES | View All (9)
Journal Article
Published: 13 December 2021
The Canadian Mineralogist (2021) 59 (6): 1731–1753.
..., KGI = King George Island, LI = Livingstone Island, NSR = North Scotia Ridge, PiB = Pirie Bank, PBs = Powell Basin, SI = Smith Island, SGI = South Georgia Island, SSR = South Scotia Ridge, SOIs = South Orkney Islands, SSaIs = South Sandwich Islands, SSIs = South Shetland Islands, SST = South Shetland...
FIGURES | View All (9)
Image
(a) Schematic tectonic map of the <span class="search-highlight">South</span> <span class="search-highlight">Shetland</span> Islands and Bransfield Str...
Published: 01 June 2001
Figure 1. (a) Schematic tectonic map of the South Shetland Islands and Bransfield Strait between South America and the Antarctic Peninsula (modified from Grad et al., 1997 ). (1) Subduction trench; (2) divergent plate boundary, ridge and transform faults; (3) direction of subduction; (4
Journal Article
Journal: Geology
Published: 14 October 2022
Geology (2022) 50 (12): 1403–1408.
... in the Bransfield Strait and adjacent seas, austral summer 2013 : Polar Biology , v. 39 , p. 789 – 798 , https://doi.org/10.1007/s00300-016-1936-8 . Jabaloy , A. , , 2003 , The transition from an active to a passive margin (SW end of the South Shetland Trench, Antarctic Peninsula) : Tectonophysics...
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Journal Article
Published: 01 January 1973
Journal of the Geological Society (1973) 129 (1): 39–59.
... of bottom map Features of unknown nature Summary of conclusions References 39 4 ° 4 x 50 54 56 56 57 SUMMARY The construction of a bathymetric map of the continental shelf of the British Isles around Orkney and Shetland and extending east to the Norwegian Trench and as far south as Aberdeen is described...