qfaults web comp As of January 12, 2017, the USGS maintains a limited number of metadata fields that characterize the Quaternary faults and folds of the United States. For the most up-to-date information, please refer to the interactive fault map.

Archived report (descriptions no longer maintained)

Saddle Mountain faults (Class A) No. 575

Last Review Date: 2016-12-06

County(s) and State(s) MASON COUNTY, WASHINGTON
Physiographic province(s) PACIFIC BORDER
Reliability of location Good
Compiled at 1:250,000 scale.
Length (km) 15 km.
Average strike N26°E
Sense of movement Reverse, Left lateral
Dip 67–75° SE
Historic earthquake
Most recent prehistoric deformation latest Quaternary (<15 ka)
Slip-rate category Between 0.2 and 1.0 mm/yr
References Arcos, M.E.M., 2012, A Holocene sedimentary record of tectonically influenced reduced channel mobility, Skokomish River delta, Washington State, USA: Geomorphology, v. 177–178, p. 93–107, doi:10.1016/j.geomorph.2012.07.016.

Barnett, E.A., Sherrod, B.L., Hughes, J.F., Kelsey, H.M., Czajkowski, J.L., Walsh, T.J., Contreras , T.A., Schermer, E.R., and Carson, R.J., 2015, Paleoseismic evidence for late Holocene tectonic deformation along the Saddle Mountain fault zone, southeastern Olympic Peninsula, Washington: Bulletin of the Seismological Society of America, v. 105, p. 38–71, doi:10.1785/0120140086.

Blakely, R.J., Sherrod, B.L., Hughes, J.F., Anderson, M.L., Wells, R.E., and Weaver, C.S., 2009, Saddle Mountain fault deformation zone, Olympic Peninsula, Washington—Western boundary of the Seattle uplift: Geosphere, v. 5, p. 105–125, doi:10.1130/GES00196.1.

Carson, R.J., 1973, Holocene faulting, southeastern Olympic Peninsula, Washington: Geological Society of America Abstracts with Programs, v. 5, no. 7, p. 568-569.

Dragovich, J.D., Logan, R.L., Schasse, H.W., Walsh, T.J., Lingley, W.S., Jr., Norman, D.K., Gerstel, W.J., Lapen, T.J., Schuster, J.E., and Meyers, K.D., 2002, Geologic map of Washington—Northwest quadrant: Washington Division of Geology and Earth Resources Geologic Map GM-50, 72 p. pamphlet, 3 sheets, scale 1:250,000.

Haugerud, R.A., Harding, D.J., Johnson, S.Y., Harless, J.L., Weaver, C.S., and Sherrod, B.L., 2003, High-resolution lidar topography of the Puget Lowland, Washington—A bonanza for earth science: Geological Society of America GSA Today, v. 13, no. 6, p. 4-10.

Hughes, J.F., 2005, Meters of synchronous Holocene slip on two strands of a fault in the western Puget Sound lowland, Washington [abs.]: Eos (Transactions, American Geophysical Union), Fall Meeting, v. 86, no. 52, abs. S51C-1020.

Polenz, M., Czajkowski, J.L., Paulin, G.L., Contreras, T.A., Miller, B.A., Martin, M.E., Walsh, T.J., Logan, R.L., Carson, R.J., Johnson, C.N., Skov, R.H., Mahan, S.A., and Cohan, C.R., 2010, Geologic map of the Skokomish Valley and Union 7.5-minute quadrangles, Mason County: Washington State Department of Natural Resources Open-File Report 2010-3, 21 p.

Schuster, R.L., Logan, R.L., and Pringle, P.T., 1992, Prehistoric rock avalanches in the Olympic Mountains, Washington: Science, v. 258, p. 1620-1621.

Tabor, R.W., and Cady, W.M., 1978, Geologic map of the Olympic Peninsula, Washington: U.S. Geological Survey Miscellaneous Investigations Map I-994, scale 1:125,000.

Tabor, R.W., and Cady, W.M., 1978, The structure of the Olympic Mountains; analysis of a subduction zone: U.S. Geological Survey Professional Paper 1033, 39 p.

Walsh, T.J., and Logan, R.l., 2007, Results of trenching the Canyon River fault, southeast Olympic Mountains, Washington: Washington Division of Geology and Earth Resources Open-File Report 2007-1, 1 plate, http://file.dnr.wa.gov/publications/ger_ofr2007-1_canyon_river_fault_trench.pdf.

Wilson, J.R., 1975, Geology of the Price Lake area, Mason County, Washington: Raleigh, North Carolina State University, unpublished M.S. thesis, 79 p.

Wilson, J.R., 1983, Relationships between late Quaternary faults and earthquakes in the Puget Sound, Washington area, in Yount, J.C., and Crosson, R.S., eds., Proceedings of workshop XIV, Earthquake hazards of the Puget Sound region, Washington: U.S. Geological Survey Open-File Report 83-19, p. 165-177.

Wilson, J.R., Bartholomew, M.J., and Carson, R.J., 1979, Late Quaternary faults and their relationship to tectonism in the Olympic Peninsula, Washington: Geology, v. 7, p. 235-239.

Witter, R.C., Givler, R.W., and Carson, R.J., 2008, Two post-glacial earthquakes on the Saddle Mountain west fault, southeastern Olympic Peninsula, Washington: Bulletin of the Seismological Society of America, v. 98, p. 2894–2917, doi: 0.1785/0120080127.