Synthesis of the crustal structure of the transform continental margin off Ghana, northern Gulf of Guinea

1997 ◽  
Vol 17 (1) ◽  
pp. 12-20 ◽  
Author(s):  
R. A. Edwards ◽  
R. B. Whitmarsh ◽  
R. A. Scrutton
Keyword(s):  
Continental Margin ◽  
Crustal Structure ◽  
Gulf Of Guinea

scholarly journals Twin enigmatic microseismic sources in the Gulf of Guinea observed on intercontinental seismic stations

2013 ◽  
Vol 194 (1) ◽  
pp. 362-366 ◽  
Author(s):  
Yingjie Xia ◽  
Sidao Ni ◽  
Xiangfang Zeng
Keyword(s):  
North America ◽  
Temporal Variation ◽  
Crustal Structure ◽  
Source Region ◽  
Broad Band ◽  
Active Volcano ◽  
Gulf Of Guinea ◽  
Waveform Data ◽  
Seismic Stations ◽  
The Earth

Abstract Based on studies of continuous waveform data recorded on broad-band seismograph stations in Africa, Europe and North America, we report evidences for two temporally persistent and spatially localized monochromatic vibrating sources (around 0.036 and 0.038 Hz, respectively) in the Gulf of Guinea, instead of just one source (0.038 Hz or 26 s) found 50 yr ago. The location of the 0.036 Hz source is close to the Sao Tome Volcano, therefore it may be related to volcano processes. However, the 0.038 Hz source cannot be explained with known mechanisms, such as tectonic or oceanic processes. The most likely mechanism is volcano processes, but there is no reported active volcano in source region. Such repetitive vibration sources may provide valuable tools for detecting temporal variation of crustal structure of the Earth.

scholarly journals Crustal Structure and Continent-Ocean Boundary Along the Galicia Continental Margin (NW Iberia): Insights From Combined Gravity and Seismic Interpretation

Tectonics ◽  
2018 ◽  
Vol 37 (5) ◽  
pp. 1576-1604 ◽  
Author(s):  
M. Druet ◽  
A. Muñoz-Martín ◽  
J. L. Granja-Bruña ◽  
A. Carbó-Gorosabel ◽  
J. Acosta ◽  
...  
Keyword(s):  
Continental Margin ◽  
Crustal Structure ◽  
Seismic Interpretation ◽  
Nw Iberia ◽  
Ocean Boundary

The continental margin/crustal structure off the Lofoten Islands, Northern Norway

1984 ◽  
pp. 211-216 ◽  
Author(s):  
G. Drivenes ◽  
M. A. Sellevoll ◽  
V. Renard ◽  
F. Avedik ◽  
J. Pajchel
Keyword(s):  
Continental Margin ◽  
Crustal Structure ◽  
Northern Norway ◽  
Lofoten Islands

The crustal structure of the Central Mozambique continental margin — Wide-angle seismic, gravity and magnetic study in the Mozambique Channel, Eastern Africa

2013 ◽  
Vol 599 ◽  
pp. 170-196 ◽  
Author(s):  
Volker Thor Leinweber ◽  
Frauke Klingelhoefer ◽  
Sönke Neben ◽  
Christian Reichert ◽  
Daniel Aslanian ◽  
...  
Keyword(s):  
Continental Margin ◽  
Crustal Structure ◽  
Magnetic Study ◽  
Eastern Africa ◽  
Wide Angle ◽  
Mozambique Channel ◽  
Gravity And Magnetic

A revised model for the crustal structure of the SW Grenville Province, Ontario, Canada

2017 ◽  
Vol 154 (4) ◽  
pp. 903-913 ◽  
Author(s):  
ALAN DICKIN ◽  
JACOB STRONG ◽  
GABRIEL ARCURI ◽  
ANNIKA VAN KESSEL ◽  
LUCIA KRIVANKOVA-SMAL
Keyword(s):  
Continental Margin ◽  
Crustal Structure ◽  
Nd Isotopes ◽  
Thrust Sheet ◽  
Grenville Province ◽  
Collisional Orogeny

AbstractThe Grenville Province forms the exhumed remnants of a 1.1 Ga collisional orogeny that telescoped an older continental margin. Terranes with distinct crustal formation ages can be mapped using Nd isotopes, revealing a ramp–flat thrust structure. The ramp is identified by the presence of retrogressed eclogites, and its trajectory is refined using Nd model ages. The main allochthon is locally overlain by the Parry Sound klippe, but is also underlain by a tectonic duplex. Northwest-directed nappes represent remnants of a corrugated thrust sheet, but a ring-shaped remnant was also preserved where the thrust sheet was down-buckled under the dense rocks of Parry Sound domain.

Deep Crustal Structure of the Continental Margin off the Explora Escarpment and in the Lazarev Sea, East Antarctica

2004 ◽  
Vol 25 (3-4) ◽  
pp. 283-304 ◽  
Author(s):  
Wilfried Jokat ◽  
Oliver Ritzmann ◽  
Christian Reichert ◽  
Karl Hinz
Keyword(s):  
Continental Margin ◽  
Crustal Structure ◽  
East Antarctica ◽  
Deep Crustal Structure
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