Fine-scale magnetic anomaly field over the southern Juan de Fuca Ridge: Axial magnetization low and implications for crustal structure

1994 ◽  
Vol 99 (B3) ◽  
pp. 4833-4855 ◽  
Author(s):  
Maurice A. Tivey
Keyword(s):  
Magnetic Anomaly ◽  
Crustal Structure ◽  
Juan De Fuca Ridge ◽  
Fine Scale ◽  
Anomaly Field ◽  
Fuca Ridge ◽  
Juan De Fuca

Asymmetric deep crustal structure across the Juan de Fuca Ridge

Geology ◽  
1988 ◽  
Vol 16 (6) ◽  
pp. 533 ◽  
Author(s):  
K.M.M. Rohr ◽  
B. Milkereit ◽  
C. J. Yorath
Keyword(s):  
Crustal Structure ◽  
Juan De Fuca Ridge ◽  
Fuca Ridge ◽  
Juan De Fuca ◽  
Deep Crustal Structure

scholarly journals Near-axis crustal structure and thickness of the Endeavour Segment, Juan de Fuca Ridge

2016 ◽  
Vol 43 (11) ◽  
pp. 5688-5695 ◽  
Author(s):  
Dax Soule ◽  
William S. D. Wilcock ◽  
Douglas R. Toomey ◽  
Emilie E. E. Hooft ◽  
Robert T. Weekly
Keyword(s):  
Crustal Structure ◽  
Juan De Fuca Ridge ◽  
Fuca Ridge ◽  
Juan De Fuca ◽  
Endeavour Segment

Geology of the Northern End of Juan de Fuca Ridge and Sea-Floor Spreading

1974 ◽  
Vol 11 (10) ◽  
pp. 1384-1406 ◽  
Author(s):  
Sandra M. Barr ◽  
R. L. Chase
Keyword(s):  
Magnetic Anomaly ◽  
Fracture Zone ◽  
Juan De Fuca Ridge ◽  
Transform Fault ◽  
Sea Floor ◽  
Fuca Ridge ◽  
Juan De Fuca ◽  
Low Potassium ◽  
Sea Floor Spreading ◽  
Ocean Ridge

The northern end of Juan de Fuca Ridge consists of a series of basement ridges and valleys, inundated with sediment except for the axis of most recent sea-floor spreading. This axis is associated with the western of two branches of the Brunhes magnetic anomaly. The eastern branch of the magnetic anomaly is associated with a largely sediment-covered ridge, apparently produced by spreading early in the Brunhes Epoch. The intervening negative anomaly is probably caused by reversely magnetized rocks older than 0.7 m.y. Basalts dredged from the region of the northern end of Juan de Fuca Ridge have compositions typical of low-potassium ocean ridge basalts. They differ from basalts reported from the southern part of Juan de Fuca Ridge which have higher K2O, TiO2, FeOT, and FeOT/MgO. This difference is compatible with the hypothesis that a mantle plume exists under the southern part of the ridge. Distribution of earthquake epicenters suggests that the Queen Charlotte Fault Zone presently extends south of Explorer Ridge to intersect Juan de Fuca Ridge at 49°N and that the Sovanco Fracture Zone no longer functions as a transform fault.

scholarly journals Upper crustal structure and axial topography at intermediate spreading ridges: Seismic constraints from the southern Juan de Fuca Ridge

2005 ◽  
Vol 110 (B12) ◽  
Author(s):  
J. Pablo Canales ◽  
Robert S. Detrick ◽  
Suzanne M. Carbotte ◽  
Graham M. Kent ◽  
John B. Diebold ◽  
...  
Keyword(s):  
Crustal Structure ◽  
Juan De Fuca Ridge ◽  
Fuca Ridge ◽  
Spreading Ridges ◽  
Juan De Fuca

scholarly journals Variable crustal structure along the Juan de Fuca Ridge: Influence of on-axis hot spots and absolute plate motions

2008 ◽  
Vol 9 (8) ◽  
pp. n/a-n/a ◽  
Author(s):  
Suzanne M. Carbotte ◽  
Mladen R. Nedimović ◽  
Juan Pablo Canales ◽  
Graham M. Kent ◽  
Alistair J. Harding ◽  
...  
Keyword(s):  
Crustal Structure ◽  
Hot Spots ◽  
Juan De Fuca Ridge ◽  
Plate Motions ◽  
Fuca Ridge ◽  
Juan De Fuca

scholarly journals Gravity and seismic study of crustal structure along the Juan de Fuca Ridge axis and across pseudofaults on the ridge flanks

2011 ◽  
Vol 12 (5) ◽  
pp. n/a-n/a ◽  
Author(s):  
Milena Marjanović ◽  
Suzanne M. Carbotte ◽  
Mladen R. Nedimović ◽  
Juan Pablo Canales
Keyword(s):  
Crustal Structure ◽  
Juan De Fuca Ridge ◽  
Ridge Axis ◽  
Fuca Ridge ◽  
Juan De Fuca
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