File:Pago Eroded Volcano in American Samoa.jpg

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English: The eroded shield volcano of Pago at Pago Pago Harbor on Tutuila Island, American Samoa. The mountain summit (Matafao Peak) and upper slopes are a volcanic plug of trachyte (about 1.02 million years old). The lower slopes are volcanic breccia of the Pago Volcanics (about 1.18 million years old). Reference: McDougall, I. (1985) Age and Evolution of the Volcanoes of Tutuila, American Samoa, Pacific Science, volume 39 number 4, pages 311-320. https://scholarspace.manoa.hawaii.edu/bitstream/handle/10125/938/v39n4-311-320.pdf?sequence=1
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Source http://pacificislandparks.files.wordpress.com/2012/07/afono-pass2.jpg at http://pacificislandparks.com/2012/07/23/national-natural-landmark-part-v/
Author National Park Service

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Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.

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current22:23, 22 December 2014Thumbnail for version as of 22:23, 22 December 20142,560 × 1,920 (1.08 MB)GeoWriter (talk | contribs)User created page with UploadWizard

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