Iliamna 1876
Start: 1876 [1]
Event Type: Explosive
Max VEI: 3 [2]
- Lahar, debris-flow, or mudflow [5]
- Debris-avalanche, volcanic avalanche, or landslide [5]
Description: Becker (1898) lists an eruption from Iliamna in 1876. Sapper (1917) and Coats (1950) call this eruption "smoke." However, Kienle and Swanson (1983) report this eruption as a "major eruption spreading ash to Kenai Peninsula (Rymer and Sims, 1976). The description for this 1876 eruption sounds similar to the description of the 1867 eruption. Waythomas and Miller (1999) suggest that perhaps this event was a flank collapse, with debris avalanches and lahars.
Miller and others (1998) doubt the veracity of this eruption: "although Coats (1950) lists several reports of 'smoke', and an eruption in 1867, documentation is poor and validity of the reports is questionable. Except for the summit fumarolic activity, it is uncertain and perhaps unlikely that Iliamna Volcano has been historically active."
Perhaps 1867 and 1876 refer to two separate events, or perhaps someone has reversed a "76" or a "67" somewhere along the way. It is interesting to note that although Becker lists the 1876 event, he does not list the 1867 event.
Miller and others (1998) doubt the veracity of this eruption: "although Coats (1950) lists several reports of 'smoke', and an eruption in 1867, documentation is poor and validity of the reports is questionable. Except for the summit fumarolic activity, it is uncertain and perhaps unlikely that Iliamna Volcano has been historically active."
Perhaps 1867 and 1876 refer to two separate events, or perhaps someone has reversed a "76" or a "67" somewhere along the way. It is interesting to note that although Becker lists the 1876 event, he does not list the 1867 event.
References Cited
[1] Reconnaissance of the gold fields of southern Alaska with some notes on general geology, 1898
Becker, G. F., 1898, Reconnaissance of the gold fields of southern Alaska with some notes on general geology: U.S. Geological Survey Annual Report 0018, p. 1-86, 6 sheets, scale unknown.
full-text PDF 1.5 MB [2] Volcanoes of the world [2nd edition], 1994
Simkin, Tom, and Siebert, Lee, 1994, Volcanoes of the world [2nd edition]: Tucson, Arizona, Geoscience Press, 349 p.[3] Volcanism in the eastern Aleutian Arc: late Quaternary and Holocene centers, tectonic setting and petrology, 1983
Kienle, Juergen, and Swanson, S. E., 1983, Volcanism in the eastern Aleutian Arc: late Quaternary and Holocene centers, tectonic setting and petrology: Journal of Volcanology and Geothermal Research, v. 17, n. 1-4, p. 393-432.[4] Preliminary survey of modern glaciolacustrine sediments for earthquake-induced deformational structures, south-central Alaska, 1976
Rymer, M. J., and Sims, J. D., 1976, Preliminary survey of modern glaciolacustrine sediments for earthquake-induced deformational structures, south-central Alaska: U.S. Geological Survey Open-File Report 76-373, p. 1-31.[5] Preliminary volcano-hazard assessment for Iliamna Volcano, Alaska, 1999
Waythomas, C. F., and Miller, T. P., 1999, Preliminary volcano-hazard assessment for Iliamna Volcano, Alaska: U.S. Geological Survey Open-File Report 99-0373, 31 p., 1 sheet, scale unknown.
full-text PDF 2.84 MB
map sheet plate 1.0 MB [6] Katalog der geschichtlichen vulkanausbruche, 1917
Sapper, Karl, 1917, Katalog der geschichtlichen vulkanausbruche: Strassburg, Germany, Karl J. Trubner, 358 p.[7] Volcanic activity in the Aleutian Arc, 1950
Coats, R. R., 1950, Volcanic activity in the Aleutian Arc: U.S. Geological Survey Bulletin 0974-B, p. 35-49, 1 sheet, scale 1:5,000,000.
plate 1 PDF 819 KB
full-text PDF 783 KB Complete Eruption References
Reconnaissance of the gold fields of southern Alaska with some notes on general geology, 1898
Becker, G. F., 1898, Reconnaissance of the gold fields of southern Alaska with some notes on general geology: U.S. Geological Survey Annual Report 0018, p. 1-86, 6 sheets, scale unknown.
full-text PDF 1.5 MB 
Volcanic activity in the Aleutian Arc, 1950
Coats, R. R., 1950, Volcanic activity in the Aleutian Arc: U.S. Geological Survey Bulletin 0974-B, p. 35-49, 1 sheet, scale 1:5,000,000.
plate 1 PDF 819 KB
full-text PDF 783 KB 
Alaska Peninsula-Aleutian Islands, 1958
Powers, H. A., 1958, Alaska Peninsula-Aleutian Islands: in Williams, H., (ed.), Landscapes of Alaska, Los Angeles, CA, University of California Press, p. 61-75.
Katalog der geschichtlichen vulkanausbruche, 1917
Sapper, Karl, 1917, Katalog der geschichtlichen vulkanausbruche: Strassburg, Germany, Karl J. Trubner, 358 p.
Volcanoes of the world [2nd edition], 1994
Simkin, Tom, and Siebert, Lee, 1994, Volcanoes of the world [2nd edition]: Tucson, Arizona, Geoscience Press, 349 p.
Hard Copy held by AVO at FBKS - CEC shelf
Iliamna volcano and its basement, 1955
Juhle, R. W., 1955, Iliamna volcano and its basement: U.S. Geological Survey Open-File Report 55-0077, 74 p., 2 plates, scale unknown.
Volcanism in the eastern Aleutian Arc: late Quaternary and Holocene centers, tectonic setting and petrology, 1983
Kienle, Juergen, and Swanson, S. E., 1983, Volcanism in the eastern Aleutian Arc: late Quaternary and Holocene centers, tectonic setting and petrology: Journal of Volcanology and Geothermal Research, v. 17, n. 1-4, p. 393-432.
Preliminary volcano-hazard assessment for Iliamna Volcano, Alaska, 1999
Waythomas, C. F., and Miller, T. P., 1999, Preliminary volcano-hazard assessment for Iliamna Volcano, Alaska: U.S. Geological Survey Open-File Report 99-0373, 31 p., 1 sheet, scale unknown.
full-text PDF 2.84 MB
map sheet plate 1.0 MB 
Preliminary survey of modern glaciolacustrine sediments for earthquake-induced deformational structures, south-central Alaska, 1976
Rymer, M. J., and Sims, J. D., 1976, Preliminary survey of modern glaciolacustrine sediments for earthquake-induced deformational structures, south-central Alaska: U.S. Geological Survey Open-File Report 76-373, p. 1-31.
Hard Copy held by AVO at FBKS - CEC shelf