Cascade Range

Projects

Continuous measurements of chloride flux in Seperation Creek and sampling of springs in its drainage basin assocated with ground surface deformation near South Sister Volcano

Diffuse CO₂ flux measurements on several stratovolcanoes

Chlorine cycling through the Cascadia Subduction zone and Cascade Range volcanic arc

Continuous measurements and sampling of major rivers in the Central Oregon Cascades

The chemical and isotopic characteristics of thermal waters and gases along the Cascades

 Quantification of heat discharge rates from the Cascade arc

Helium isotope composition of volcanic gases

Recent Publications and Reports

Hurwitz, S., Mariner, R.H., Fehn, U., Snyder, G.T., 2005, Systematics of halogen elements and their radioisotopes in thermal springs of the Cascade Range, Central Oregon, Western USA, Earth and Planetary Science Letters , v. 35 , 700-714, doi: 10.1016/j.epsl.2005.04.029. abstract

Evans, W.C., van Soest, M.C., Mariner, R.H., Hurwitz, S., Ingebritsen, S.E., Wicks, C.W., Jr., and Schmidt, M.E., 2004, Magmatic intrusion west of Three Sisters, central Oregon, USA: The perspective from spring geochemistry: Geology, v. 32, no. 1, p. 69-72. abstarct

van Soest, M.C., Evans, W.C., Mariner, R.H., and Schmidt, M.E., 2004, Chloride in hot springs of the Cascade volcanic arc – the source puzzle: Proceedings of the 11th International Symposium on Water-Rock Interaction, Saratoga Springs, New York, USA, June 27-July 2, 2004, p 209-213.

Evans, W.C., van Soest, M.C., Mariner, R.H., Hurwitz, S., Ingebritsen, S.E., Wicks, C.W., Jr., and Schmidt, M.E., 2004, Magmatic intrusion west of Three Sisters, central Oregon, USA: The perspective from spring chemistry: Geology, v. 32, p. 69-72. abstract.

van Soest, M.C., Evans, W.C., Mariner, R.H., and Schmidt, M. E., 2004, Chloride in hot springs of the Cascade volcanic arc - The source puzzle, in Wanty, R.B., and Seal, R.R., II, eds., Water Rock Interaction, v. 1, Proceedings of the Eleventh International Symposium on Water-Rock Interaction, Saratoga Springs, New York, July 2004: New York, A.A. Balkema, p. 209-213.

Hurwitz , S., K.L. Kipp, M.E. Reid, and S.E. Ingebritsen, 2003, Groundwater flow, heat transport, and water-table position within volcanic edifices: Implications for volcanic processes in the Cascade Range, Journal of Geophysical Research, 108, 2557, doi: 10.1029/2003JB002565. abstract

Mariner, R.H., Evans, W.C., Presser, T.S., and White, L.D., 2003, Excess nitrogen in selected thermal and mineral springs of the Cascade Range, in northern California, Oregon, and Washington - sedimentary or volcanic in origin?: Journal of Volcanology and Geothermal Research, v. 121, no. 1-2, p. 99-114. abstract

Evans, W.C., Mariner, R.H., Ingebritsen, S.E., Kennedy, B.M., van Soest, M.C., and Huebner, M.A., 2002, Report of hydrologic investigations in the Three Sisters area of central Oregon, summer 2001: U.S. Geological Survey Water-Resources Investigations Report 02-4061, 13 p. report

Ingebritsen, S.E., Galloway, D.L., Colvard, L.M., Sorey, M.L., and Mariner, R.H., 2001, Time-variation of hydrothermal discharge at selected sites in the western United States: Implications for monitoring: Journal of Volcanology and Geothermal Research, v. 111, p. 1-23. abstract

Mariner, R.H. and Lowenstern, J.B., 1999, The geochemistry of water from springs, wells, and snowpack on and adjacent to Medicine Lake volcano, Northern California: Transactions of the 1999 Geothermal Resources Council Annual Meeting, v. 23, p. 319-326. abstract

Mariner, R.H., Evans, W.C., and Huebner, M., 1998, Preliminary chemical and isotopic data for waters from springs and wells on and near Medicine Lake Volcano, Cascade Range, northern California: U. S. Geological Survey Open-File Report 98-2, 27p.

Lowenstern, J.B., Killgore, M.M., Mariner, R.H., Blakely, R. Smith, J.G., Donnelly-Nolan, J., 1998, 3-dimensional visualization of the Medicine Lake Highland , CA : Topography, geology, geophysics and hydrology: U.S. Geological Survey Open-File Report 98-777.

 

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Cascades Volcano Observatory

 

Contact: Shaul Hurwitz, Bill Evans, Deb Bergfeld