GORDA PLATE STRUCTURE & TECTONICS
Investigators: Jason Chaytor, Chris Goldfinger & Robert Dziak
June 14th 2005 Magnitude 7.2 & June 16th 2005 Magnitude 6.7
Gorda Plate Earthquakes
Click here to read OSU Press Release
Bathymetry
compilation
and structural interpretation by Jason Chaytor
OSU Active
Tectonics and Seafloor Mapping Lab,
Earthquake
locations from USGS NEIC, centroid moment tensors from Harvard CMT
database (dates are local).
Updated June 20, 2005
Preliminary comparison of the moment tensors to the known structures within the Gorda
plate strongly suggest the earthquakes occurred on a NE-trending left-lateral strike-slip faults. It appears from the bathymetry
that the causitive faults are buried by sediments and situated along the trends of mapped strike-slip faults in the epicentral areas.
3-Dimensional view of the Gorda plate shaded-bathymetry looking toward the northeast from the location
of the Gorda Ridge - Mendocino Fracture Zone intersection, showing the location of the June 2005
Magnitude 7.2 and 6.7 earthquakes
Where is the Gorda Plate?
Results of Gorda Plate Structural Mapping
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