هذه geology الصورة / الصورتان باستعمال رسومات متجهية ملفات رسوميات شعاعية.
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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/
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