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Jacob Lowenstern

Research Geologist

Contact Info

Short Biography

Jake Lowenstern is a research geologist with the U.S. Geological Survey in Menlo Park, CA.  He serves as Scientist-in-Charge of the Yellowstone Volcano Observatory.  To study the interaction of magmas and their overlying hydrothermal systems, he applies techniques ranging from gas and and isotope geochemistry to igneous petrology to U-Th-Pb geochronology.  A 1986 graduate of Dartmouth College, he spent the following year on a Fulbright fellowship to Catania Sicily (Italy).  He later earned an M.S. and Ph.D. at Stanford University, finishing in 1992.  He spent a year as a researcher at the Geological Survey of Japan (Tsukuba) in 1993. Since then, he has worked for the USGS in Menlo Park, CA.  In 2000, he received the Lindgren Award from the Society of Economic Geologists and in 2006 was an AAPG Distinguished Lecturer. He was elected a fellow of the Geological Society of America in 2011.

Google Scholar Profile


Lowenstern, Jacob B., Hurwitz, S, McGeehin, J., 2016, Radiocarbon dating of silica sinter deposits in shallow drill cores from the Upper Geyser Basin, Yellowstone National Park: Journal of Volcanology and Geothermal Research, v. 310, 132–136. [Link]

Lowenstern, J.B., Bergfeld, D., Evans, W.C., Hunt, A.G., 2015, Origin of geothermal gases at Yellowstone: Journal of Volcanology and Geothermal Research, v. 302, p. 87–101. [Link]

Lowenstern, J.B., 2015, Bursting the bubble of melt inclusions: American Mineralogist, v. 100, p. 672–673. [Download File]

Lowenstern, J.B., Evans, W.C., Bergfeld, D. and Hunt, A.G., 2014, Prodigious degassing of a billion years of accumulated radiogenic helium at Yellowstone: Nature, v. 506, p. 355–358. [Link]

Audétat A., and Lowenstern J.B. (2014) Melt Inclusions. In: Holland H.D. and Turekian K.K. (eds.) Treatise on Geochemistry, Second Edition, vol. 13, pp. 143-173. Oxford: Elsevier. [Link]

Mastin, L.G., Van Eaton, A.R., and Lowenstern, J.B., 2014, Modeling ash fall distributions from a Yellowstone supereruption: G-Cubed, v.15, 3459-3475, doi:10.1002/2014GC005469. [Link]

Hurwitz, S., and Lowenstern, J.B., 2014, Dynamics of the Yellowstone Hydrothermal System: Reviews of Geophysics, v. 51, doi:10.1002/2014RG000452. [Link]

Lowenstern, J.B., Pitcher, B.W, 2013, Analysis of H2O in silicate glass using attenuated total reflectance (ATR) micro-FTIR spectroscopy: American Mineralogist, v. 98, p. 1660-1668.

Pallister, J.S., Diefenbach, A.K. and others including Lowenstern, J.B., 2013, The Chaitén rhyolite lava dome: Eruption sequence, lava dome volumes, rapid effusion rates and source of the rhyolite magma: Andean Geology, v. 40, p. 277-294.

Zierenberg, R.A., Schiffman, P. and others, 2013, Composition and origin of rhyolite melt intersected by drilling in the Krafla geothermal field, Iceland: Contributions to Mineralogy and Petrology, v. 165, p. 327-347.

Dawson, Phillip B., Benítez, M. C., Lowenstern, J.B., Chouet, B. A. 2012, Identifying bubble collapse in a hydrothermal system using hidden Markov models: Geophysical Research Letters, v. 39, No. 1, L01304

Clor, L.E., McCleskey, R.B., Huebner, M.A., Lowenstern, J.B., Heasler, H.P., Mahony, D.L., Moloney, Tim, and Evans, W.C., 2012, Water chemistry and electrical conductivity database for rivers in Yellowstone National Park, Wyoming: U.S. Geological Survey Data Series 632, 18 p. and data tables, available at [Link]

Chiodini, G. Caliro, S., Lowenstern, J.B., Evans, W.C., Bergfeld, D., Tassi, F., and Tedesco, D., 2012, Insights from fumarole gas geochemistry on the origin of hydrothermal fluids on the Yellowstone Plateau: Geochimica et Cosmochimica Acta, v. 89, p. 265-278.

Vaughan, R.G., Kestay, L.P., Lowenstern, J.B., , Jaworowski, C., Heasler, H.P., 2012, Use of ASTER and MODIS thermal infrared data to quantify heat flow and hydrothermal change at Yellowstone National Park: Journal of Volcanology and Geothermal Research, v. 233-234, p. 72-89.

Bergfeld, D., Evans, W.C., Lowenstern, J.B., and Hurwitz, S. 2012, Carbon dioxide and hydrogen sulfide degassing and cryptic thermal input to Brimstone Basin, Yellowstone National Park, Wyoming, Chemical Geology 330-331, p. 233–243.

Lowenstern, J.B., Bleick, H., Vazquez, J.A, Castro, J.M., and Larson, P., 2012, Degassing of Cl, F, Li, and Be during extrusion and crystallization of the lava dome at Volcan Chaiten, Chile during 2008 and 2009: Bulletin of Volcanology, DOI: 10.1007/s00445-012-0663-4

Lowenstern, J. B., Bergfeld, D., Evans, W.C. and Hurwitz, S., 2012, Generation and evolution of hydrothermal fluids at Yellowstone: Insights from the Heart Lake Geyser Basin: Geochemistry Geophysics Geosystems, 13, Q01017, doi:10.1029/2011GC003835. [Download File]

Bergfeld, Deborah, Lowenstern, J.B., Hunt, A.G., Shanks, W.C.P, III, and Evans, W.C., 2011, Gas and isotope chemistry of thermal features in Yellowstone National Park, Wyoming: U.S. Geological Survey Scientific Investigations Report 2011-5012, 26 p. and data files []. [Link]

Oppenheimer, C., Moretti, R., Kyle, P.R., Eschenbacher, A., Lowenstern, J.B., and Hervig, R.L., 2011, Mantle to surface degassing of alkalic magmas at Erebus Volcano, Antarctica: Earth and Planetary Science Letters, v. 306, p. 361-371. doi:10.1016/j.epsl.2011.04.005

Elders, W.A., Guomundur, O., Zierenberg, R.A., Pope, E.,C., Mortensen, A.K., Guomundsson, A., Lowenstern, J.B., Marks, N.E., Owens, L., Bird, D.K., Reed, M., Olsen, N.J., and Schiffman, P., 2011, Origin of a rhyolite that intruded a geothermal well while drilling in a basaltic volcano, at Krafla, Iceland: Geology, v. 39, pp. 231-234.

Audetat, A., Dolejs, D., and Lowenstern, J.B., 2011, Molybdenite saturation in silicic magmas: occurrence and petrological implications: Journal of Petrology, v. 52 (5), 891-904. doi:10.1093/petrology/egr008.

Wicks, Charles, de la Llera, J.C., Lara, L.E., and Lowenstern, Jacob, 2011.The role of dyking and fault control in the rapid onset of eruption at Chaitén volcano, Chile: Nature, v. 478, no. 7369, p. 374-377.

Hurwitz, S., Evans, W.C., Lowenstern, J.B., 2010, River solute fluxes reflecting active hydrothermal chemical weathering of the Yellowstone Plateau Volcanic Field, USA: Chemical Geology, 276, 331–343. doi:10.1016/j.chemgeo.2010.07.001.

Yellowstone Volcano Observatory, 2010, Protocols for geologic hazards response by the Yellowstone Volcano Observatory: U.S. Geological Survey Circular 1351, 18 p. [Link]

Pallister, J. S., Major, J.J., Pierson, T.C., Hoblitt, R.P., Lowenstern, J.B., Eichelberger, J.C., Lara, L., Moreno, H., Munoz, J., Castro, J.M., Iroume, A., Andreoli, A., Jones, J., Swanson, F., Crisafulli. C., 2010, Interdisciplinary studies of eruption at Chaitén volcano, Chile, Eos Trans. AGU, 91(42), 381–382.

Schiffman, P., Zierenberg, R., Chadwick W.W. Jr., Clague, D.A., and Lowenstern, J., 2010, Contamination of basaltic lava by seawater: evidence found in a lava pillar from Axial Seamount, Juan de Fuca Ridge. Geochem. Geophys. Geosyst., doi:10.1029/2009GC003009.

Werner, C., Hurwitz, S., Evans, W.C., Lowenstern, J.B., Bergfeld, D., Heasler, H., Jaworowski, C., Hunt, A., 2008, Volatile emissions and gas geochemistry of Hot Spring Basin, Yellowstone National Park, USA: Journal of Volcanology and Geothermal Research, v. 178, pp. 751-762.

Lowenstern, J.B., and Hurwitz, S., 2008,  "Monitoring a Supervolcano in Repose: Heat and Volatile Flux at the Yellowstone Caldera": Elements, v. 4 (1), p. 35-40.

Clor, L.E., Lowenstern, J.B., and Heasler, H.P., 2007, Systematics of water temperature and flow at Tantalus Creek during calendar year 2005, Norris Geyser Basin, Yellowstone National Park, Wyoming: U.S. Geological Survey Scientific Investigations Report 2007-5234, 17 p. [].

Christiansen, R.L., Lowenstern, J.B., Smith, R.B., Heasler, H., Morgan, L.A., Nathenson, N., Mastin, L.G., Muffler, L.J.P., and Robinson, J.E., 2007, Preliminary assessment of volcanic and hydrothermal hazards in Yellowstone National Park and vicinity. U.S. Geological Survey Open-file Report 2007-1071, 94 p.

Hurwitz, S., Lowenstern, J.B., Heasler, H, 2007, Spatial and temporal geochemical trends in the hydrothermal system of Yellowstone National Park: Inferences from river solute flux. Journal of Volcanology and Geothermal Research. v. 162, 149-171.

Bachmann, O., Charlier, B.L.A., and Lowenstern, J.B., 2007, Zircon crystallization and recycling in the magma chamber of the rhyolitic Kos Plateau Tuff (Aegean arc). Geology, v. 35, p. 73-76.

Lowenstern, J.B., Charlier, B.L.A., Clynne, M.A., and Wooden, J.L., 2006, Extreme U-Th disequilibrium in rift-related basalts, rhyolites and granophyric granite and the timescale of rhyolite generation, intrusion and crystallization at the Alid volcanic center, Eritrea: Journal of Petrology, v. 47, no. 11, p. 2105-2122.

Lowenstern, J.B., Smith, R.B., and Hill, D.P. 2006, Monitoring super-volcanoes: Geophysical and geochemical signals at Yellowstone and other large caldera systems: Philosophical Transactions of the Royal Society A: Physical, Mathematical and Engineering Sciences. v. 364, no. 1845, p. 2055-2072.

Yellowstone Volcano Observatory, 2006, Volcano and Earthquake Monitoring Plan for the Yellowstone Volcano Observatory, 2006-2015, U.S. Geological Survey Scientific Investigations Report 2006-5276, 17 pp.,

Fedele, L., Tarzia, M., Belkin, H.E., De Vivo, B., Lima, A., and Lowenstern, J.B., 2006, Magmatic-hydrothermal fluid interaction and mineralization in alkali-syenite nodules from the Breccia Museo pyroclastic deposit, Naples, Italy. in Volcanism in the Campania Plain: Vesuvius, Campi Flegrei and Ignmibrites, editor B. De Vivo, Developments in Volcanology Volume 9, Elsevier, pp. 125-161.

Lowenstern, J.B., 2005,  Truth, fiction, and everything in between at the Yellowstone Caldera. Geotimes, v. 50, no. 6, p. 18-23.

Bacon, C.R., and Lowenstern, J.B., 2005, Late Pleistocene granodiorite source for recycled zircon and phenocrysts in rhyodacite lava at Crater Lake, Oregon. Earth and Planetary Science Letters, v. 233, no. 3-4, p. 277-293.

White, A.F., Schulz, M.S., Lowenstern, J.B., Davison, V., and Bullen, T.D., 2005, The ubiquitous nature of accessory calcite in granitoid rocks: Implications for weathering, solute evolution, and petrogenesis. Geochimica Cosmochimica Acta. v. 69, p. 1455-1471.

Lowenstern, J. B., Christiansen, R. L., Smith, R. B., Morgan, L. A., Heasler, H., 2005, Steam Explosions, Earthquakes, and Volcanic Eruptions - What's in Yellowstone's Future?, U.S. Geological Survey Fact Sheet 2005-3024 (

Charlier, B.L.A., Wilson, C.J.N., Lowenstern, J.B., Blake, S., Van Calsteren, P.W., Davidson, J.P., 2005, Magma Generation at a Large, Hyperactive Silicic Volcano (Taupo, New Zealand) Revealed by U-Th and U-Pb Systematics in Zircons. Journal of Petrology, v. 46, p. 3-32.

Lanphere, M.A., Champion, D.E., Clynne, M.A., Lowenstern, J.B., Sarna-Wojcicki, A.M., and Wooden, J.L., 2004, Age of the Rockland tephra, western USA. Quaternary Research. v.62, p. 92-104.

Mastin, L.G., Christiansen, R.L., Thornber, C., Lowenstern, J., and Beeson, M., 2004, What makes hydromagmatic eruptions violent? Some insights from the Keanakako'i Ash, Kilauea Volcano, Hawai'i. Journal of Volcanology and Geothermal Research, v. 137, pp. 15-31.

Brantley, Steven R., Lowenstern, Jacob B., Christiansen, Robert L., Smith, Robert B., Heasler, Henry, Waite, Greg, and Wicks, Charles, 2004, Tracking changes in Yellowstone's restless volcanic system. U.S. Geological Survey Fact Sheet 100-03 (

Bogatikov, O.A., Melekestev, I.V., Miller, D.K., Gurbanov, A.G., Lipman, P.W., Lowenstern, J.B., Sulerzhitskii, L.D., and Shevchenko, A.V., 2003, Catastrophic rock-ice collapse and rapid shove of the Kukurtli Glacier (Elbrus Volcano, Northern Caucasus) in first and second centuries. Doklady Earth Sciences, v. 391, no. 5, pp. 627-630.

Starratt, S.W., Barron, J.A., Kneeshaw, T., Phillips, R.L., Bischoff, J.L., Lowenstern, J.B., and Wanket, J.A., 2003, A Holocene record from Medicine Lake, Siskiyou County, California: Preliminary diatom, pollen, geochemical and sedimentological data, in G.J. West and N.L. Blomquist, eds., Proceedings of the Nineteenth Annual Pacific Climate Workshop, Technical Report 71 of the Interagency Ecological Program for the San Francisco Estuary, p. 131-147.

Lowenstern, J.B., 2003, Melt inclusions come of age: Volatiles, Volcanoes, and Sorby's Legacy, In: B. De Vivo and R.J. Bodnar (eds). Melt Inclusions in Volcanic Systems: Methods, Applications and Problems. Developments in Volcanology 5, Elsevier Press, Amsterdam, pp. 1-22.

Lowenstern, J.B., Donnelly-Nolan, J., Wooden, J.L., and Charlier, B.L.A., 2003, Volcanism, plutonism and hydrothermal alteration at Medicine Lake volcano, California, Proceedings, Twenty-Eighth workshop on Geothermal Reservoir Engineering, Stanford, California, USA, January 27-29, 2003,

Lowenstern, J.B. and Janik, C.J., 2003, The origins of reservoir liquids and vapors from The Geysers geothermal field, California (USA), in S. F. Simmons and I. Graham (ed). Volcanic, geothermal and ore-forming fluids: Rulers and witnesses of processes within the Earth: Society of Economic Geologists Special Publication 10, p. 181-195.

Charlier, B.L.A., Peate, D.W., Wilson, C.J.N., Lowenstern, J.B., Storey, M. and Brown, S.J.A., 2003, Crystallization ages in coeval silicic magma bodies: 238U-230Th disequilibrium evidence from the Rotoiti and Earthquake Flat eruption deposits, Taupo Volcanic Zone, New Zealand: Earth and Planetary Science Letters, v. 206, p. 441-457.

King, P.L., Vennemann, T.W., Holloway, J.R., Hervig, R.L., Lowenstern, J.B., and Forneris, J.F., 2002, Analytical techniques for volatiles: A case study using intermediate (andesitic) glasses: American Mineralogist, v. 87, p. 1077-1089.

Newman, S., Lowenstern, J.B., 2002, VolatileCalc: a silicate melt-H2O-CO2 solution model written in Visual Basic for Excel: Computers and Geosciences vol. 28 no. 5, pp. 597-604.

Lowenstern, J.B., 2001, Acceptance of the Waldemar Lindgren award for 2000: Economic Geology, v. 96, p. 230-231.

Lowenstern, J.B., 2001, Carbon dioxide in magmas and implications for hydrothermal systems: Mineralium Deposita: 36 (6) p. 490-502 (abstract or PDF ).

Lowenstern, J.B., Persing, H.M., Wooden, J.L., Lanphere, M., Donnelly-Nolan, J., and Grove, T.L., 2000, U-Th dating of single zircons from young granitoid xenoliths: new tools for understanding volcanic processes: Earth and Planetary Science Letters, v. 183, pp 291-302. [full pdf ].

Lowenstern, J.B., 2000, A review of the contrasting behavior of two magmatic volatiles: chlorine and carbon dioxide: Journal of Geochemical Exploration v. 69-70, p. 287-290 (click here for pdf).

Childs, J.R., Lowenstern, J.B., Phillips, R.L., Hart, P., Rytuba J.J., Barron, J.A., Starratt, S.W., and Spaulding S., 2000, Bathymetric, geophysical and geologic sample data from Medicine Lake, Siskiyou County, northern California: U.S. Geological Survey Open-File Report OF 00-043 (URL

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

Lowenstern, Jacob B., Janik, C.J., Fahlquist, L.S., and Johnson, L.S., 1999, A new compilation of gas and steam analyses from The Geysers geothermal field, California, USA: Proceedings 21st New Zealand Geothermal Workshop, p. 55-60.

Lowenstern, Jacob B., Janik, Cathy J., Fahlquist, Lynne S., and Johnson, Linda S., 1999, A compilation of gas geochemistry and isotopic analyses from The Geysers geothermal field: 1978-1991:Transactions Geothermal Resources Council, v. 23, p. 383-390.

Lowenstern, J.B., Janik, C.J., Fournier, R.O., Tesfai, T., Duffield, W.A., Clynne, M.A., Smith, J.G., Woldegiorgis, W., Weldemariam, K., and Kahsai, G., 1999, A geochemical reconnaissance of the Alid volcanic center and geothermal system, Danakil depression, Eritrea: Geothermics, v. 28, p. 161-187.

Lowenstern, Jacob B., Janik, Cathy J., Fahlquist, Lynne S., and Johnson, Linda S., 1999, Gas and isotope geochemistry of 81 steam samples from wells in the Geysers geothermal field, Sonoma and Lake Counties, California, U.S.A.: U.S. Geological Survey Open-File Report OF 99-304 (URL, 28p.

Lowenstern, J.B., Killgore, M., Mariner, R., 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 (

Bohlen, S.R., Halley, R.B., Hickman, S.H., Johnson, S.Y., Lowenstern, J.B., Muhs, D.R., Plumlee, G.S., Thompson, G.A., Trauger, D.L. and Zoback, M.L., 1998, Geology for a changing world: A science strategy for the Geologic Division of the U.S. Geological Survey, 2000-2010, U.S. Geological Survey Circular 1172, 59p.

Lowenstern, J. B., and Villa, F., eds. and translators, 1998, Alìd Volcano in the colony of Eritrea, translation of: Marini, Angelo, 1938, Il vulcano Alìd nella colonia Eritrea: L'Universo, v. 19, p. 51-65, 131-170: U.S. Geological Survey Open-File Report 98-218, 94 p.

Seltmann, Reimar, Lehmann, Bernd, Lowenstern, J. B., and Candela, P. A.,1997, High-level silicic magmatism and related hydrothermal systems: Editorial: Journal of Petrology, v. 38, p. 1617-1618.

Lowenstern, J.B., Clynne, M.A. and Bullen, T.D., 1997, Comagmatic A-type granophyre and rhyolite from the Alid volcanic center, Eritrea, northeast Africa. Journal of Petrology, v.38, p. 1707-1721.

Duffield, W.A., Bullen, T., D., Clynne, M. A., Fournier, R.O., Janik, C.J., Lanphere, M.A., Lowenstern, J., Smith, J.G., W/Giorgis, L., Kahsai, G., W/Mariam, K. and Tesfai, T., 1997, Geothermal Potential of the Alid Volcanic Center, Danakil Depression, Eritrea. U.S. Geological Survey Open File Report 97-291, 62 p. (LINK TO ABSTRACT ONLY).

Lowenstern J.B., Janik C.J., Tesfai T., and Fournier, R.O., 1997, Geochemical study of the Alid hydrothermal system, Danakil Depression, Eritrea: Stanford Geothermal Program Workshop Report SGP-TR-150, v. 22, p. 37-44.

Duffield, W., Clynne, M.A., Fournier, R.O., Janik, C.J., Lowenstern, J., and Smith, J.G., Woldegiorgis, L., Kahsai, G., Weldemariam, K., and Tesfai, T., 1996, A geothermal resource for Eritrea, an energy-poor African nation: Proceedings of the 18th Annual New Zealand Geothermal Workshop, p. 115-120.

Lowenstern, J.B., and Sinclair, W.D., 1996, Exsolved magmatic fluid and its role in the formation of comb-layered quartz at the Cretaceous Logtung W-Mo deposit, Yukon Territory, Canada: Transactions of the Royal Society of Edinburgh, Earth Sciences, v. 87, p. 291-303

Gostyayeva, N., Theodore, T.G. and Lowenstern, J.B., 1996, Implications of fluid-inclusion relations in the Elder Creek porphyry copper system, Battle Mountain Mining District, Nevada: U.S. Geological Survey Open-File Report 96-268, 60 p.

Clynne, M.A., Duffield, W.A., Fournier, R.O., Giorgis, L., Janik, C.J., Kahsai, G., Lowenstern, J., Mariam, K., Smith, J.G., and Tesfai, T., 1996, Geothermal potential of the Alid Volcanic Center, Danakil Depression, Eritrea: USGS Final Report to U.S. Agency for International Development under the terms of PASA Number AOT-0002-P-00-5033-00, 46 p.

Clynne, M.A., Duffield, W.A., Fournier, R.O., Giorgis, L., Janik, C.J., Kahsai, G., Lowenstern, J., Mariam, K., Smith, J.G., and Tesfai, T., 1996, Geology and geothermal potential of Alid Volcanic Center, Eritrea, Africa: Transactions of the Geothermal Resources Council, v. 20, p. 279-286.

Shinohara, H., Kazahaya, K., and Lowenstern, J.B., 1995, Volatile transport in a convecting magma column: Implications for porphyry Mo mineralization. Geology , v. 23, p. 1091-1094.

Lowenstern, J.B., 1995, Applications of silicate melt inclusions to the study of magmatic volatiles. In: J.F.H. Thompson (ed). Magmas, Fluids and Ore Deposits. Mineralogical Association of Canada Short Course Volume #23, p. 71-99.

Lowenstern, J.B., 1994, Dissolved volatile concentrations in an ore-forming magma: Geology, v. 22, p. 893-896.

Lowenstern, J.B., 1994, Chlorine, fluid immiscibility and degassing in peralkaline magmas from Pantelleria, Italy: American Mineralogist, v. 79, p. 353-369.

Hedenquist, J.W., and Lowenstern, J.B., 1994, The role of magmas in the formation of hydrothermal ore deposits: Nature, v. 370, p. 519-527.

Lowenstern, J.B., Bacon, C.R., Calk, L.C., Hervig, R.L., Aines, R.D., 1994, Major-element, trace-element, and volatile concentrations in silicate melt inclusions from the tuff of Pine Grove, Wah Wah Mountains, Utah: U.S. Geological Survey Open-File Report 94-242, 20 p.


Lowenstern, J.B., 1993, Evidence for Cu-bearing fluid in magma erupted at the Valley of Ten Thousand Smokes, Alaska: Contributions to Mineralogy and Petrology, v. 114, p. 409-421.

Lowenstern, J.B., Mahood, G.A., Hervig, R.L., and Sparks, J., 1993, Occurrence and distribution of Mo and MoS2 in peralkaline rhyolites from Pantelleria, Italy: Contributions to Mineralogy and Petrology, v. 114, p. 119-129.

Lowenstern, J.B., 1992, The behavior and distribution of volatile metals and gases in two silicic magmatic systems: Pantelleria, Italy and the Valley of Ten Thousand Smokes, Alaska: Stanford, CA, USA, Stanford University, Ph.D. dissertation, 163 p.

Lowenstern, J.B., Mahood, G.A., Rivers, M.L., and Sutton, S.R., 1991, Evidence for extreme partitioning of copper into a magmatic vapor phase: Science, v. 252, p. 1405-1409.

Lowenstern, J.B., and Mahood, G.A., 1991, New data on magmatic H2O contents of pantellerites with implications for petrogenesis and eruptive dynamics at Pantelleria: Bulletin of Volcanology, v. 54, p. 78 83.

Lowenstern, J.B., and Mahood, G.A., 1991, Petrogenesis of high-silica rhyolite on the Alaska Peninsula: Geophysical Research Letters, v. 18, p. 1565-1568.

Lowenstern, J.B., Wallmann, P.C., and Pollard, D.D., 1991, The West Mageik Lake sill complex as an analogue for magma transport during the 1912 eruption at the Valley of Ten Thousand Smokes, Alaska: Geophysical Research Letters, v. 18, p. 1569-1572.

Lowenstern, J.B. , 1990, The West Mageik Lake sill complex as an analogue for the 1912 eruption at the Valley of Ten Thousand Smokes, Alaska: Stanford, CA, USA, Stanford University, M.S. Thesis, 23 p.

Amore, C., Giuffrida, E., Scribano, V., Lowenstern, J.B., and Muller, W., 1987, Emplacement and textural analysis of some present-day pyroclastic deposits of Mt. Etna (Sicily): Bulletino della Societá Geologica Italiana, v. 106, p. 785-791.


Yellowstone Volcano Observatory

Image of Current Focus for Yellowstone Volcano Observatory

The Yellowstone Volcano Observatory (YVO) is a consortium of eight organizations that collaborate to monitor Yellowstone's volcanic and hydrothermal system.   YVO is one of the five USGS-sponsored Volcano Observatories that monitor volcanoes within the United States for science and public safety. Our goal is to increase scientific understanding of the Yellowstone volcanic and hydrothermal system, and todisseminate data, interpretations and accumulated knowledge to the public.

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Contact Information

Jacob Lowenstern
345 Middlefield Road
Menlo Park, CA 94025
650-329-5203 - Fax
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