Home > Faculty/Staff > John A. Wolff
John A. Wolff, Ph.D.
Position: |
Professor & Director of GeoAnalytical Lab | |
Campus Address: |
School of Earth & Environmental Sciences |
|
Office: |
Webster Building Rm 825 | |
Phone: |
509-335-2825 | |
E-mail: |
jawolff@mail.wsu.edu | |
Personal Website: |
None | |
Research interests:
Dr. Wolff works in the areas of igneous petrology and volcanology, and teaches courses in these areas at the undergraduate and graduate levels. For most of his research career he has studied the genesis, evolution, and emplacement mechanisms of Cenozoic volcanic rocks in the Canary Islands (Spain), the Jemez Mountains and Rio Grande rift (New Mexico), and the inland Northwestern U.S. (Washington, Oregon, and Idaho). To this end, he and his graduate students employ the entire range of instrumentation available in the GeoAnalytical Lab, of which he is Director. He is particularly interested in the application of in-situ trace element and isotope ratio microanalysis to petrologic problems. Recent and current projects include, but are not limited to:- Magma generation beneath the Las Cañadas caldera, Tenerife, Canary Islands
- Evolution and eruption of high-silica rhyolite, Valles caldera, New Mexico
- Magma genesis in the Rio Grande rift
- Generation, storage and eruption of Columbia River flood basalt magmas
- Origin of voluminous 18O-depleted rhyolites, Snake River Plain, Idaho
Courses:
- GEOL 103: The Solar System
- GEOL 356: Igneous Petrology
- GEOL 362: Metamorphic Petrology
- GEOL 563: Igneous Petrogenesis
- GEOL 567: Volcanology
Graduate Students:
- Paul Olin: polin@mail.wsu.edu
- Keith Brunstad: kbrunstad@wsu.edu
- Geoff Cook: gwcook@wsu.edu
- Scott Boroughs: entoptics@verizon.net
- Alison Eckberg: violinrox@hotmail.com
- Will Starkel: dudeshoe@hotmail.com
- Antony Giles: tngiles@wsu.edu
- Karyn Patridge: sleeptodream1@gmail.com
Selected Publications:
(* publications co-authored with students)- *Edgar, C.J., Wolff, J.A., Olin, P.H., Nichols, H.J., Cas, R.A.F., Reiners, P.W., Spell, T.L. & Martí, J. (2006) The late Quaternary Diego Hernandez Formation, Tenerife: volcanology of a cycle of repeated voluminous explosive phonolitic eruptions. J. Volcanol. Geotherm. Res., in press.
- Soriano, C., Galindo, I., Martí, J. & Wolff, J.A. (2006) Conduit-vent structures and related proximal deposits in the Las Cañadas caldera, Tenerife, Canary Islands. Bull. Volcanol. 69, 217-231.
- *Min, K., Reiners, P.W., Wolff, J.A., Mundil, R. & Winters, R.L. (2006) (U-Th)/He dating of volcanic phenocrysts with high-U,Th inclusions, Bandelier Tuff, New Mexico. Chemical Geology 227, 223-235.
- *Pittari, A., Cas, R.A.F., Edgar, C.J., Nichols, H.J., Wolff, J.A. & Martí, J. (2006) The influence of palaeotopography on pyroclastic flow processes and facies architecture of a lithic-rich ignimbrite in a high gradient setting: the Abrigo ignimbrite, Tenerife, Canary Islands. J. Volcanol. Geotherm. Res. 152, 273-315.
- *Boroughs, S., Wolff, J.A., Bonnichsen, B., Godchaux, M. & Larson, P.B. (2005) Large volume, low-δ18O rhyolites of the central Snake River Plain, Idaho, USA. Geology 33, 821-824.
- *Ramos, F.C., Wolff, J.A. & Tollstrup, D.L. (2005) Sr isotope disequilibrium in Columbia River flood basalts: evidence for rapid, shallow-level, open-system processes. Geology 33, 457-460.
- Sumner, J.M., Blake, S., Matela, R. & Wolff, J.A. (2005) Spatter. J. Volcanol. Geotherm. Res. 142, 49-65.
- *Wolff, J.A., Rowe, M.C., Teasdale, R., Gardner, J.N., Ramos, F.C. & Heikoop, C.E. (2005) Petrogenesis of pre-caldera mafic lavas, Jemez Mountains volcanic field (New Mexico, U.S.A.). J. Petrol. 46, 407-439.
- Self, S., Gertisser, R., Thordarson, T., Rampino, M.R. & Wolff, J.A. (2004) Magma volume, volatile emissions, and stratospheric aerosols from the 1815 eruption of Tambora - revisited. Geophysical Research Letters 31, L20608, doi:10.1029/2004GL020925.
- *Ramos, F.C., Wolff, J.A. & Tollstrup, D.L. (2004) Measuring 87Sr/86Sr variations in minerals and groundmass from basalts using LA-MC-ICPMS. Chemical Geology 211, 135-158.
- Sumner, J.M. & Wolff, J.A. (2003) Petrogenesis of mixed-magma, high-grade ignimbrite ‘TL’, on Gran Canaria: zoning, crystal transfer, and replenishment in a peralkaline silicic magma chamber. J. Volcanol. Geotherm. Res. 126, 109-126.
- Wolff, J.A. & Ramos, F.C. (2003) Pb isotope variations among Bandelier Tuff feldspars: no evidence for a long-lived silicic magma chamber. Geology 31, 533-536.
- *Strong, M. & Wolff, J.A. (2003) Compositional variations within scoria cones. Geology 31, 143-146.
- *Edgar, C.J., Wolff, J.A., Nicholls, H.J., Cas, R.A.F. & Martí, J. (2002) A complex Quaternary multiple ignimbrite-forming phonolitic eruption: the Poris Member of the Diego Hernandez Formation (Tenerife, Canary Islands). J. Volcanol. Geotherm. Res. 118, 99-130.
- *Wolff, J.A., Balsley, S.D. & Gregory, R.T. (2002) Oxygen isotope disequilibrium between quartz and sanidine from the Bandelier Tuff, New Mexico, consistent with a short residence time of phenocrysts in rhyolitic magma. J. Volcanol. Geotherm. Res. 116, 119-135.
- *Wolff, J.A., Heikoop, C.E. & Ellisor, R. (2000) Hybrid origin of Rio Grande rift hawaiites. Geology 28, 203-206.
- *Wolff, J.A., Grandy, J.S. & Larson, P.B. (2000) Interaction of mantle-derived magma with island crust? Trace element and oxygen isotope data from the Diego Hernandez Formation, Las Cañadas, Tenerife, Canary Islands. J. Volcanol. Geotherm. Res. 103, 343-366.
- Wolff, J.A. & Sumner, J.M. (2000) Lava fountains and their products. Encyclopedia of Volcanoes, Academic Press, p. 321-329.
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