Lahar

A mudflow composed chiefly of volcaniclastic materials on the flank of a volcano. The debris carried in the flow includes pyroclasts, blocks from primary lava flows, and epiclastic material. Syn: mudflow Neuendorf, K.K.E., Mehl, J.P., Jr., and Jackson, J.A., eds., 2011, Glossary of Geology: Alexandria, Virginia, American Geological Institute, 799 p.

Below is a list of publications related to Lahar. Select a publication number to access more detailed information and their respective files available for download.

PIR 2021-1

Larsen, J.F., Waythomas, C.F., Mulliken, K.M., Izbekov, Pavel, and Cameron, C.E., 2021, Major-element oxide, trace element, and glass compositional analyses from Holocene to historical eruptions from Pavlof Volcano, Alaska: Alaska Division of Geological & Geophysical Surveys Preliminary Interpretive Report 2021-1, 20 p. https://doi.org/10.14509/30580

IC 67

Mulliken, K.M., 2018, The Alaska Volcano Observatory: 30 years of protecting Alaskans from the effects of volcanic activity (1988-2018): Alaska Division of Geological & Geophysical Surveys Information Circular 67, 2 p. https://doi.org/10.14509/30032

RI 2017-10

Schaefer, J.R., Scott, W.E., and Layer, P.W., 2017, Geologic map of Mount Chiginagak volcano, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2017-10, 32 p., 1 sheet, scale 1:25,000. https://doi.org/10.14509/29769

DDS 13

Cameron, C.E., and Snedigar, S.F., 2016, Alaska Volcano Observatory image database: Alaska Division of Geological & Geophysical Surveys Digital Data Series 13, https://www.avo.alaska.edu/images/. https://doi.org/10.14509/29689

RI 2015-7

Reger, R.D., Stevens, D.S.P., and Koehler, R.D., 2015, Surficial geology of the Tyonek area, south-central Tyonek Quadrangle, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2015-7, 38 p., 1 sheet, scale 1:63,360. https://doi.org/10.14509/29471

RI 2015-2

Larsen, J.F., Neal, C.A., Schaefer, J.R., Kaufman, A.M., and Lu, Zhong, 2015, The 2008 phreatomagmatic eruption of Okmok Volcano, Aleutian Islands, Alaska: Chronology, deposits, and landform changes: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2015-2, 53 p. https://doi.org/10.14509/29405

RI 2014-5

Stelling, P.L., Beget, J.E., Gardner, J.E., and Schaefer, J.R., 2014, Preliminary volcano-hazard assessment for Fisher volcano, Unimak Island, Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2014-5, 32 p., 1 sheet, scale 1:500,000. https://doi.org/10.14509/29146

RI 2014-2

Herriott, T.M., Nye, C.J., Reger, R.D., Wartes, M.A., LePain, D.L., and Gillis, R.J., 2014, Geologic context, age constraints, and sedimentology of a Pleistocene volcaniclastic succession near Mount Spurr volcano, south-central Alaska: Alaska Division of Geological & Geophysical Surveys Report of Investigation 2014-2, 35 p. https://doi.org/10.14509/27261

P 1810

Bacon, C.R., Neal, C.A., Miller, T.P., McGimsey, R.G., and Nye, C.J., 2014, Postglacial eruptive history, geochemistry, and recent seismicity of Aniakchak volcano, Alaska Peninsula: U.S. Geological Survey Professional Paper 1810, 74 p.

B 2139

Keith, T.E.C., 1995, The 1992 eruptions of Crater Peak vent, Mount Spurr Volcano, Alaska: U.S. Geological Survey Bulletin 2139, 220 p.

P 1447-B

Scott, K.M., 1989, Magnitude and frequency of lahars and lahar-runout flows in the Toutle-Cowlitz River system: U.S. Geological Survey Professional Paper 1447-B, 41 p.