scholarly journals Spatial and Temporal Variations in Earthquake Stress Drop on Gofar Transform Fault, East Pacific Rise: Implications for Fault Strength

2018 ◽  
Vol 123 (9) ◽  
pp. 7722-7740 ◽  
Author(s):  
Pamela A. Moyer ◽  
Margaret S. Boettcher ◽  
Jeffery J. McGuire ◽  
John A. Collins
Keyword(s):  
Stress Drop ◽  
East Pacific Rise ◽  
Temporal Variations ◽  
Spatial And Temporal Variations ◽  
Transform Fault ◽  
East Pacific ◽  
Fault Strength

scholarly journals The relationship between seismicity and fault structure on the Discovery transform fault, East Pacific Rise

2014 ◽  
Vol 15 (9) ◽  
pp. 3698-3712 ◽  
Author(s):  
Monica Wolfson-Schwehr ◽  
Margaret S. Boettcher ◽  
Jeffrey J. McGuire ◽  
John A. Collins
Keyword(s):  
East Pacific Rise ◽  
Transform Fault ◽  
Fault Structure ◽  
East Pacific ◽  
The Relationship

Primitive intratransform volcanism at Garrett Transform Fault (East Pacific Rise)

1997 ◽  
Vol 34 (8) ◽  
pp. 1101-1117 ◽  
Author(s):  
R. Hébert ◽  
R. Hekinian ◽  
D. Bideau
Keyword(s):  
Magma Mixing ◽  
East Pacific Rise ◽  
Source Region ◽  
Mineral Chemistry ◽  
Oscillatory Zoning ◽  
Chromian Spinel ◽  
Transform Fault ◽  
East Pacific ◽  
Simply Connected ◽  
Ocean Ridge

The paper presents the results of a petrological study of samples collected by submersible from volcanic features that floor the intratransform domain of the Garrett Transform Fault. Most intratransform volcanics are typically highly porphyritic and primitive mid-ocean ridge basalt (MORB) (glasses have Mg# higher than 0.65), whereas most volcanics close to the East Pacific Rise – transform intersection zone are nearly aphyric evolved MORB (glasses have Mg# lower than 0.54). In the intratransform volcanics, phenocrysts and megacrysts are plagioclase and olivine and accessory spinel microphenocrysts in the magnesian lavas, and clinopyroxene and plagioclase in ferrobasalts. Variable mineral chemistry of plagioclase and spinel, chemical disequilibria between these phases and surrounding glass, and resorption features and oscillatory zoning in plagioclase suggest that limited magma mixing occurred during genesis of intratransform MORB. Aluminous- to chromian-spinel compositions are in agreement with melt interactions in small magma pockets. These processes are superimposed on complex partial melting events of a heterogeneous source region underlying the intratransform domain. Generation of most ferrobasalts can be explained by crystal fractionation of primitive MORB. Some ferrobasalts appear to derive from discrete magma bodies, since they are not simply connected to the magnesian tholeiites through fractional crystallization processes.

scholarly journals Imaging along-strike variations in mechanical properties of the Gofar transform fault, East Pacific Rise

2014 ◽  
Vol 119 (9) ◽  
pp. 7175-7194 ◽  
Author(s):  
B. Froment ◽  
J. J. McGuire ◽  
R. D. van der Hilst ◽  
P. Gouédard ◽  
E. C. Roland ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
East Pacific Rise ◽  
Transform Fault ◽  
East Pacific

scholarly journals Magmatism in the Garrett transform fault (East Pacific Rise near 13°27′S)

1995 ◽  
Vol 100 (B6) ◽  
pp. 10163-10185 ◽  
Author(s):  
Roger Hékinian ◽  
Daniel Bideau ◽  
Réjean Hébert ◽  
Yaoling Niu
Keyword(s):  
East Pacific Rise ◽  
Transform Fault ◽  
East Pacific

scholarly journals January 2006 seafloor-spreading event at 9°50′N, East Pacific Rise: Ridge dike intrusion and transform fault interactions from regional hydroacoustic data

2009 ◽  
Vol 10 (6) ◽  
pp. n/a-n/a ◽  
Author(s):  
Robert P. Dziak ◽  
Delwayne R. Bohnenstiehl ◽  
Haruyoshi Matsumoto ◽  
Matthew J. Fowler ◽  
Joseph H. Haxel ◽  
...  
Keyword(s):  
East Pacific Rise ◽  
Seafloor Spreading ◽  
Transform Fault ◽  
East Pacific ◽  
Dike Intrusion ◽  
Fault Interactions
Sign in / Sign up

Export Citation Format

Share Document