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File:Iliamna Volcano geologic map.png

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Summary

Description
English: Iliamna Volcano geologic map. Jqd is Jurassic quartz diorite, tonalite and diorite, Jnp is the Jurassic Pomeroy Arkose Member, Qhv are Quaternary (Holocene) volcanic rocks, Qmf are Quaternary (Holocene) volcanic rubble and mudflows, Twf is the Tertiary (eocene and Paleocene) West Foreland Formation, and Qs are Quaternary surficial deposits. Additional Jurassic rock types include the Jtkm-Marsh Creek breccia Member, Jtkp-Portgage Creek Agglomerate Member, Jtkh-Horn Mountain Tuff Member, Jtrg-Red Glacier Formation, Jtg-Gaikema Sandstone, Jtf-Fitz Creek Siltstone, Jtc-Cynthia Falls Sandstone, Jtb-Browser Formation, Jct-Tonnie Siltstone Member, Jcp-Paveloff Siltstone Member, Jnn-Northeast Creek Siltstone Member, and Jpk are the Kakhonak and Tlikakila Complexes
Date
Source

Bedrock geologic map of the northern Alaska Peninsula area, southwestern Alaska: U.S. Geological Survey Scientific Investigations Map 2942, pamphlet 43 p., scale 1:350,000, https://doi.org/10.3133/sim2942

https://pubs.er.usgs.gov/publication/sim2942
Author Wilson, F.H., Blodgett, R.B., Blome, C.D., Mohadjer, S., Preller, C.C., Klimasauskas, E.P., Gamble, B.M., and Coonrad, W.L.

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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Captions

Iliamna Volcano geologic map

Items portrayed in this file

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inception

1 January 2017

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Date/TimeThumbnailDimensionsUserComment
current21:44, 21 August 2019Thumbnail for version as of 21:44, 21 August 2019929 × 866 (1.07 MB)Pi3.124User created page with UploadWizard

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