File:Cascadia subduction zone USGS.png

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Summary

Description
English: Cascadia subduction zone. This is the site of recurring en:megathrust earthquakes at average intervals of about 500 years, including the en:Cascadia Earthquake of en:1700.
Source https://earthquake.usgs.gov/eqinthenews/2004/usslav/rupture_area-nw.html, specifically https://earthquake.usgs.gov/eqinthenews/2004/usslav/rupture_area-nw.gif
Author

The original uploader was Curps at English Wikipedia.

Later versions were uploaded by Remember the dot at en.wikipedia.
Other versions Derivative works of this file:  Cascadia subduction zone USGS He.jpgCategory:Files with derivative versions

Licensing

Public domain
This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.

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Category:PD USGS#Cascadia%20subduction%20zone%20USGS.png

Original upload log

The original description page was here. All following user names refer to en.wikipedia.
  • 2007-07-19 18:08 Remember the dot 495×706×8 (23290 bytes) cropped off border
  • 2007-07-19 18:05 PNG crusade bot 502×739×8 (24104 bytes) == Summary == [[Cascadia subduction zone]]. This is the site of recurring [[megathrust earthquake]]s at average intervals of about 500 years, including the [[Cascadia Earthquake]] of [[1700]]. Source: [http://earthquake.usgs.gov/eqinthenews/

Automatically converted to PNG

The PNG crusade bot automatically converted this image to the more efficient en:PNG format. The image was previously uploaded as "Cascadia Subduction Zone.gif".

Previous file history

  • 04:07:55, 10 January 2005 (UTC) . . Curps (Talk | contribs) . . 502x739 (30,673 bytes) (')

Previous description history

Category:1700 Cascadia earthquake Category:Maps of earthquakes in North America Category:Seismic maps of North America Category:Maps of Cascadia Subduction Zone Category:Maps of volcanoes in Canada Category:Geological maps of the United States
Category:1700 Cascadia earthquake Category:Files with derivative versions Category:Geological maps of the United States Category:Geology images that should use vector graphics Category:Maps of Cascadia Subduction Zone Category:Maps of earthquakes in North America Category:Maps of volcanoes in Canada Category:PD USGS Category:PNG that should use vector graphics Category:Seismic maps of North America