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NPS Sites in Alaska Subduction Zone

shaded relief map of alaska showing nps units

Letters in ovals refer to NPS sites that lie on the accretionary wedge and volcanic arc formed by northward subduction of the Pacific Plate beneath southern Alaska. Those sites, as well as Wrangell–St. Elias and Denali national parks, are also included in the “Accreted Terranes” part of these web pages. Sites in northern Alaska are in the Brooks Range, discussed in the “Collisional Mountain Range” web pages. B–B’ is the line of cross section in [the next] illustration.

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Modified from “Parks and Plates: The Geology of our National Parks, Monuments and Seashores,” by Robert J. Lillie, New York, W. W. Norton and Company, 298 pp., 2005, www.amazon.com/dp/0134905172.

Public domain:Full Granting Rights

Image

Geologic Resources Division, Code: GRD

NPS.gov Collection

01/21/2020

01/21/2020

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Friday, January 31, 2020 5:20:24 PM

Friday, January 31, 2020 5:20:24 PM

fig 4-14 alaska nps subduction sites new@10x.jpg

Tuesday, January 21, 2020 10:02:49 PM

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