Gravity models for the South Shetland Trench and the Shackleton Fracture Zone, Antarctica

1997 ◽  
Vol 1 (2) ◽  
pp. 89-98 ◽  
Author(s):  
Young Keun Jin ◽  
Yeadong Kim ◽  
Sang Heon Nam ◽  
Duk Kee Lee ◽  
Kiehwa Lee
Keyword(s):  
Fracture Zone ◽  
Gravity Models ◽  
The South ◽  
South Shetland Trench ◽  
Shackleton Fracture Zone

Seismicity and tectonics around the northern Antarctic Peninsula from King Sejong station data

2000 ◽  
Vol 12 (2) ◽  
pp. 196-204 ◽  
Author(s):  
D.K. Lee ◽  
Y.K. Jin ◽  
Y. Kim ◽  
S.H. Nam
Keyword(s):  
Antarctic Peninsula ◽  
Fracture Zone ◽  
Normal Fault ◽  
The South ◽  
Seismicity And Tectonics ◽  
South Shetland Trench ◽  
Bransfield Basin ◽  
Shackleton Fracture Zone ◽  
The Antarctic ◽  
South Scotia Ridge

Local earthquakes recorded at the King Sejong station (62° 13′31″S, 58° 47′07″W) from 1995–96 have been analysed to study the seismicity and tectonics around the northern Antarctic Peninsula. The nature of shallow-focused normal fault earthquakes along the South Shetland Platform is still unclear. Dominant normal fault earthquakes and minor strike-slip earthquakes in the Eastern Bransfield Basin suggest 1) ongoing extension, and 2) transtensional stress transmitted from the Antarctic–Scotia transform boundaries, the South Scotia Ridge and the Shackleton Fracture Zone. A lack of seismicity in the Central Bransfield Basin supports that active seismicity in the Eastern Bransfield Basin is not a result of subduction along the South Shetland Trench. Shallow focused earthquakes have been observed along the NW–SE trending gravity low line between the Central and the Eastern Bransfield Basins that approximately coincides with the landward projection of a fracture zone in the former Phoenix Plate.

scholarly journals The antipodes fracture zone, a major structure of the south‐west pacific

1967 ◽  
Vol 1 (1) ◽  
pp. 16-25 ◽  
Author(s):  
David J. Cullen
Keyword(s):  
Fracture Zone ◽  
The South ◽  
West Pacific ◽  
South West

Chapter 3.2b Bransfield Strait and James Ross Island: petrology

2021 ◽  
pp. M55-2018-37 ◽  
Author(s):  
Karsten M. Haase ◽  
Christoph Beier
Keyword(s):  
Antarctic Peninsula ◽  
South Shetland Island ◽  
The South ◽  
Bransfield Strait ◽  
Geodynamic Processes ◽  
James Ross Island ◽  
South Shetland Trench ◽  
Low Degrees ◽  
Back Arc ◽  
The Antarctic

AbstractYoung 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 compositions along the Bransfield Strait results from varying degrees of mantle depletion and input of a slab component. The mantle underneath the Bransfield Strait is heterogeneous on a scale of approximately tens of kilometres with portions in the mantle wedge not affected by slab fluids. Lavas from James Ross Island east of the Antarctic Peninsula differ in composition from those of the Bransfield Strait in that they are alkaline without evidence for a component from a subducted slab. Alkaline lavas from the volcanic centres east of the Antarctic Peninsula imply variably low degrees of partial melting in the presence of residual garnet, suggesting variable thinning of the lithosphere by extension. Magmas in the Bransfield Strait form by relatively high degrees of melting in the shallow mantle, whereas the magmas some 150 km further east form by low degrees of melting deeper in the mantle, reflecting the diversity of mantle geodynamic processes related to subduction along the South Shetland Trench.

Tectonic Deformation in the Upper Crust and Sediments at the South Shetland Trench

2013 ◽  
pp. 157-166
Author(s):  
Y. Kim ◽  
H.-S. Kim ◽  
R. D. Larter ◽  
A. Camerlenghi ◽  
L. A. P. Gambôa ◽  
...  
Keyword(s):  
Tectonic Deformation ◽  
Upper Crust ◽  
The South ◽  
South Shetland Trench

Phytoplankton distributions in the Shackleton Fracture Zone/Elephant Island region of the Drake Passage in February–March 2004

2013 ◽  
Vol 90 ◽  
pp. 55-67 ◽  
Author(s):  
Karen E. Selph ◽  
Amy Apprill ◽  
Christopher I. Measures ◽  
Mariko Hatta ◽  
William T. Hiscock ◽  
...  
Keyword(s):  
Fracture Zone ◽  
Drake Passage ◽  
Island Region ◽  
Shackleton Fracture Zone ◽  
Elephant Island

The transition from an active to a passive margin (SW end of the South Shetland Trench, Antarctic Peninsula)

2003 ◽  
Vol 366 (1-2) ◽  
pp. 55-81 ◽  
Author(s):  
Antonio Jabaloy ◽  
Juán-Carlos Balanyá ◽  
Antonio Barnolas ◽  
Jesús Galindo-Zaldı́var ◽  
F.Javier Hernández-Molina ◽  
...  
Keyword(s):  
Antarctic Peninsula ◽  
Passive Margin ◽  
The South ◽  
South Shetland Trench

scholarly journals Crustal structure and fracture zone in the Central Basin of the South China Sea from wide angle seismic experiments using OBS

2016 ◽  
Vol 688 ◽  
pp. 1-10 ◽  
Author(s):  
Aiguo Ruan ◽  
Xiaodong Wei ◽  
Xiongwei Niu ◽  
Jie Zhang ◽  
Chongzhi Dong ◽  
...  
Keyword(s):  
South China Sea ◽  
South China ◽  
Crustal Structure ◽  
Fracture Zone ◽  
The South China Sea ◽  
Central Basin ◽  
Wide Angle ◽  
The South ◽  
China Sea

Geological setting of the barite-fluorite deposit at Jeżów Sudecki (Kaczawa Mts.)

2018 ◽  
Vol 472 (472) ◽  
pp. 231-254
Author(s):  
Cezary Sroga ◽  
Wojciech Bobiński ◽  
Wiesław Kozdrój
Keyword(s):  
Fault Zone ◽  
Fracture Zone ◽  
Normal Faults ◽  
Average Content ◽  
The South ◽  
Geological Setting ◽  
Multi Stage ◽  
Stage Process ◽  
Main Components ◽  
Western Sudetes

From 1969 to 1993, investigation for the Ba-F mineralization was executed within the metamorphic Kaczawa complex, north of the Intra-Sudetic Fault in the Jeżów Sudecki-Dziwiszów area (Kaczawa Mts., Western Sudetes). The article presents unpublished results of those prospecting works. A small deposit of Ba-F with Zn, Pb, Cu-sulphides, on the SE slope of the Szybowisko hill near Jelenia Góra, was documented in 1994. The economic mineralization is developed in the Jeżów Sudecki fault, steep fracture zone running parallel to the Intra-Sudetic Fault, and was identified at a distance of 600 m along the strike of the fault (in the W–E direction) and up to a depth of 500 m along the dip (towards the south). Two (locally three) bifurcating veins were found. The average content of the main components is: BaSO4 – 63.18%, CaF2 – 8.60%. The Ba-F mineralization is associated with the Jeżów Sudecki fault, synchronous with the formation of the Intra-Sudetic Fault zone. Both of these faults are Variscan and fall steeply southward. Younger, alpine (?) inverse and transverse normal faults were formed after the intrusion of a rhyolite dyke into the Kaczawa complex rocks and after the formation of the barite deposit. The Ba-F mineralization developed in a multi-stage process and shows a pulsatory nature. Five mineral parageneses were distinguished in the deposit. The age of the Ba-F mineralization has not been definitively established.

scholarly journals The Owen Basin off the south-east margin of Arabia and the evolution of the Owen Fracture Zone

1979 ◽  
Vol 58 (2) ◽  
pp. 441-470 ◽  
Author(s):  
R. B. Whitmarsh
Keyword(s):  
Fracture Zone ◽  
The South
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