Okmok geologic, topographic, and location maps, as well as references that are classified as maps or that contain maps.

Schaefer, Janet, and Nye, C. J., 2002, Historically active volcanoes of the Aleutian Arc: Alaska Division of Geological & Geophysical Surveys Miscellaneous Publication MP 0123, unpaged, 1 sheet, scale 1:3,000,000.
MrSID map sheet : 3.3 MB
page-size PDF : 700 KB
poster-size PDF : 4.87 MB

Nye, C. J., Queen, Katherine, and McCarthy, A. M., 1998, Volcanoes of Alaska: Alaska Division of Geological & Geophysical Surveys Information Circular IC 0038, unpaged, 1 sheet, scale 1:4,000,000, available at http://www.dggs.dnr.state.ak.us/pubs/pubs?reqtype=citation&ID=7043 .
website with links to sheets in MrSID format

"Quaternary Aleutian volcanism extends for over 2,500 km, from Buldir Island on the west to Mount Hayes on the east (fig. 1). This belt of volcanic activity lies immediately north of the Aleutian trench, a convergent boundary between the North American and Pacific lithospheric plates."

Motyka, R. J., Liss, S. A., Nye, C. J., and Moorman, M. A., 1993, Geothermal resources of the Aleutian Arc: Alaska Division of Geological & Geophysical Surveys Professional Report PR 0114, 17 p., 4 sheets, scale 1:1,000,000.
website with links to PDF and MrSID files

Byers, F. M. Jr., 1959, Geology of Umnak and Bogoslof Islands, Aleutian Islands, Alaska: in Investigations of Alaskan volcanoes, U.S. Geological Survey Bulletin B 1028-L, p. 267-369, 5 sheets, scale 1 at 1:63,360, 1 at 1:96,000, and 1 at 1:300,000.
full-text PDF : 3.5 MB
plate 39 PDF : 2.2 MB
plate 40 PDF : 3.9 MB
plate 41 PDF : 5.6 MB
plate 48 PDF : 85 KB
talbe 3 PDF : 149 KB

"In October 1945, the War Department (now Department of the Army) requested the Geological Survey to undertake a program of volcano investigations in the Aleutian Islands and Alaska Peninsula area. The first field studies were made during the years 1946-48. The results of the first year's field, laboratory, and library work were hastily assembled as two administrative reports, and most of these data have been revised for publication in Geological Survey Bulletin 1028. Part of the early work was published in 1950 in Bulletin 974-B, "Volcanic Activity in the Aleutian Arc," and in 1951 in Bulletin 989-A, "Geology of Buldir Island, Aleutian Islands, Alaska," both by Robert R. Coats. Additionl fieldwork was done during the years 1949-54. Unpublished results of the early work and all the later studies are being incoporated as parts of Bulletin 1028. The investigations of 1946 were supported almost entirely by the Office, Chief of Engineers, U.S. Army. From 1947-55 the Departments of the Army, Navy, and Air Force joined to furnish financial and logistic assistance. The Geological Survey is indebted to the Office, Chief of Engineers, for its early recognition of the value of geologic studies in the Aleutian region, and to the several military departments for their support."

Wilcox, R. E., 1959, Some effects of recent volcanic ash falls with special reference to Alaska: in Investigations of Alaskan volcanoes, U.S. Geological Survey Bulletin B 1028-N, p. 409-476, 5 sheets, scale unknown.
full-text PDF : 1.5 MB
plate 54 PDF : 76 KB
plate 55 PDF : 194 KB
plate 56 PDF : 234 KB
plate 57 PDF : 177 KB
plate 58 PDF : 140 KB

Coats, R. R., 1950, Volcanic activity in the Aleutian Arc: U.S. Geological Survey Bulletin B 0974-B, p. 35-49, 1 sheet, scale unknown.
plate 1 PDF : 819 KB
full-text PDF : 783 KB