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Gail Mahood

Gail  Mahood
Title:Professor
Primary Affiliation:Department of Geological & Environmental Sciences
Office Location:Rm 207 Bldg 320 (Geology Corner)
Research Group:Silicic Magmatism and Volcanology
Alternative Website:http://pangea.stanford.edu/research/mahood/volc_gail.htm
Phone:650-723-1429
E-mail:mahood@stanford.edu

Research

I am interested in the bodies of magma in Earth's crust that give rise to huge, explosive eruptions that spread ash continent-wide. My students and I study young volcanoes to determine how large and how explosive future eruptions might be, how frequently they are likely to occur, and what mechanisms trigger eruptions. We also do field-based studies in mountainous areas where plutons and the guts of volcanoes are well-exposed, mapping them and then analyzing their products in the laboratory, in order to reconstruct the life histories of these systems. We study the relationship of these volcanoes to their tectonic setting to understand why volcanoes of different types occur where they do. To these ends we do 40-39Ar geochronology and use the Stanford-USGS ion probe to determine U-Pb and U-series ages. I also have an interest in geoarchaeology, especially in the use of petrologic, geochemical, and isotopic techniques to discover the sources of raw materials used by prehistoric peoples.

Teaching

I teach an introductory geology course that culminates in a spring break trip to Death Valley and the eastern Sierra Nevada, and I co-teach the introductory petrology course. Upper level courses include physical volcanology, igneous petrogenesis, and field seminars in volcanology.

Professional Activities

Associate Vice Provost for Graduate Education (2006-07); Associate Dean for Graduate Policy (2005-06); Member, Faculty Steering Committee, Campaign for Undergraduate Education (2000-05); Member, Executive Committee, Interdisciplinary Program in Archaeology (2000-2008)

Education

  • 1980 | Ph.D. Geology University of California
  • 1976 | M.A. Geology University of California
  • 1974 | A.B. Geology University of California

Professional Experience

  • 1993 - Present | Professor, Department of Geological & Environmental Sciences, Stanford University
  • 1989 | Visiting Assoc. Professor Dept. of Geological Sciences, University of Michigan
  • 1987 - 1993 | Associate Professor of Geology Stanford University
  • 1983 | Visiting Assistant Professor Dept. of Geosciences, Pennsylvania State University
  • 1979 - 1987 | Assistant Professor of Geology Stanford University
  • 1978 | Field Geologist Proyecto Arqueologico Copan, Honduras

University Service

  • 2011- present | Member, SES Space Allocation and Use Committee
  • 2011  | Faculty leader, Stanford Alumni Association trip to Mongolia
  • 2011 | Chair, Reappointment Committee for Assistant Professor Kate Maher
  • 2010 - 2011 | Member, Search Committee, Head Earth Sciences Librarian
  • 2008 | Chair, GES Curriculum Committee for Petrology/Geochemistry/Geochronology
  • 2006 - 2008 | Co-Chair, GES Search Committee for Geochronologist
  • 2006 - 2007 | Associate Vice Provost for Graduate Education, Stanford University
  • 2005 - 2006 | Associate Dean for Graduate Policy Stanford University
  • 2005 - 2006 | Member, Steering Committee of the Faculty Senate
  • 2005 - 2007 | Member, Faculty Senate
  • 2005 - 2006 | Member, Provost’s Diversity Cabinet
  • 2005 - 2006 | Member, Committee on Graduate Studies
  • 2004 - 2008 | Member, Executive Committee, Archaeology Center
  • 2004 | Member, Subcommittee on University Honors
  • 2004 - 2005 | GES Graduate Student Coordinator
  • 2003 - 2005 | Member, Board of Trustees Committee on Land and Buildings
  • 2002 - 2005 | Member, Panel of Fact-Finders for University Faculty Appeal Procedures
  • 2002 | Faculty leader, Stanford Alumni Travel trip to Baja California
  • 2002 - 2005 | Member, GES Long-range Planning Committee
  • 2002 | Chair, Search Committee for Academic Secretary
  • 2001 - 2002 | Member, Advisory committee on the Institute for Research on Women and Gender
  • 2001 - 2004 | Member, Committee on Faculty Diversity
  • 2000 - 2001 | Member, NCAA Compliance Committee (monitors SU's compliance with NCAA rules regarding intercollegiate athletics)
  • 2000 Faculty leader, Stanford Alumni Travel trip to Baja and Copper Canyon
  • 2000 - 2004 | Member, Executive Committee, Interdisciplinary Program in Archeology
  • 1999 - 2000 | Director of GES Undergraduate Studies
  • 1999 Faculty leader, Stanford Alumni Travel trip to southeast Alaska
  • 1999 - 2002 | Member, Academic Standing Committee (considers cases of undergraduate students in academic trouble)
  • 1999 - 2000 | G&ES Department Director of Undergraduate Studies
  • 1999 - 2003 | Member, Faculty Steering Committee on the Campaign for Undergraduate Education
  • 1997 - 1999 | Member, Committee on Nominations, Stanford Board of Trustees
  • 1997 - 1998 | Member, Search committee, Assistant University Librarian for Collection Development
  • 1997 | Member, Search committee for Assistant University Librarian
  • 1997 - 1998 | Member, Subcommittee on Fiscal Integrity, Self-Study for NCAA Certification of the Athletic Department
  • 1996 - 1999 | Member, Faculty Senate Planning and Policy Board
  • 1996 - 2001 | Member (Vice Chair, 1997-98, 1999-2000; Chair 2000-2001) Advisory Board (7-member board that reviews all appointments, promotions, dismissals, dissolutions of departments, etc.)
  • 1996 - 1998 | Chair, Department of Geological and Environmental Sciences
  • 1995 - 1996 | Chair, Faculty Senate
  • 1995 - 1998 | Instructor, Stanford Sophomore College
  • 1994 - 1998 | Member, UPS Endowment Advisory Committee to Provost
  • 1994 - 1998 | Member, ""Ungroup"" (Provost's advisory committee on budget and strategic planning)
  • 1994 - 1995 | Member, Design Committee, Science Core for Nonscientists
  • 1994 | Member, Review Committee, Program on Writing and Critical Thinking
  • 1994 - 1996 | Member, Steering Committee of the Faculty Senate
  • 1994 - 2000 | Member, Earth Sciences Council (advisory to the Dean)
  • 1994 - 1999 | Member, Steering Committee of Program in Earth Systems
  • 1994 | Chair, Advisory Group on Sponsored Projects Administration
  • 1993 - 1994 | Member, President's Commission on Undergraduate Education
  • 1992 - 1996 | Member, Faculty Senate
  • 1991 - 1995 | Academic Council Committee on Academic Appraisal and Achievement (Chair, 1992-94; reformed grading policy)
  • 1990 - 2004 | Member, Stanford Judicial Council
  • 1990 - 2005 | Freshman/Transfer Student Academic Advisor
  • 1990 - 1995 | Associate Chair, Department of Geological and Environmental Sciences
  • 1987 - 1995 | Member, GES Graduate Awards Committee (Chair, 1987-89, 1991-94)
  • 1980 - 1996 | Branner Earth Sciences Library Committee (Chair, 1983-1987, 1994-96)

Professional Activities

  • 2006 - 2007 Member, Review Committee on future of Stanford-USGS Microanalytical Center
  • 2004 Invited Lecture: Louderback Award Luncheon, U.C. Berkeley Commencement
  • 2003 Invited Lecture: NSF-USGS meeting on Long Valley
  • 1997 | External Reviewer, Dept. of Earth Sciences, Dalhousie University, Halifax, Canada
  • 1997 - 2000 | Associate Editor, Bulletin of the Geological Society of America
  • 1996 - 1997 | Member, Nominating Committee, Geological Society of America
  • 1996 - 1999 | Councillor, Geological Society of America
  • 1996 - 1999 | Member, Audit Committee, Geological Society of America
  • 1996 - 1998 | Member, Program Committee, VGP Section, American Geophysical Union
  • 1995 - 1998 | National Visiting Committee, Modular Chem Consortium (NSF-funded consortium to reform the undergraduate chemistry curriculum)
  • 1995 | Congressional testimony concerning the role of the U.S. Geological Survey
  • 1993 - 1996 | Organizing Committee, International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI) Commission on Granites

Courses Taught

  • 2012 (Spring) | GES 381 Igneous Petrology Seminar [Enrolled 9]
  • 2012 (Spring) | GES 400 Graduate Research [Enrolled 4]
  • 2012 (Spring) | GES 184/284 Eastern Sierran Volcanism [Enrolled 19]
  • 2012 (Spring) | GES 104L Intro to Petrology Lab (w/Warren) [Enrolled 4]
  • 2012 (Spring) | GES 104 Intro to Petrology (w/Warren) [Enrolled 4]
  • 2012 (Winter) | GES 400 Graduate Research [Enrolled 2]
  • 2012 (Winter) | GES 802 TGR Disseration [Enrolled 1]
  • 2012 (Winter) | GES 185 Volcanology [Enrolled 10]
  • 2011 (Fall) | GES 292 Directed Reading with Faculty [Enrolled 1]
  • 2011 (Fall) | GES 300 Graduate Research [Enrolled 2]
  • 2011 (Fall) | GES 802 TGR Disseration [Enrolled 1]
  • 2011 (Fall) | GES 182 Field Seminar on Convergent-Margin Volcanism [Enrolled 10]
  • 2011 (Spring) | GES 104 Earth Materials: Intro to Petrology (w/ Warren) [Enrolled 5]
  • 2011 (Spring) | GES 104L Intro Petrology Lab (w/ Warren) [Enrolled 3]
  • 2011 (Spring) | GES 400 Graduate Research [Enrolled 1]
  • 2011 (Spring) | GES 284 Eastern Sierran Volcanism [Enrolled 2]
  • 2011 (Spring) | GES 802 TGR Dissertation [Enrolled 1]
  • 2011 (Winter) | GES 183 CA Desert Geology [Enrolled 2]
  • 2011 (Winter) | GES 1BN Intro Geology: CA Desert Field [Enrolled 16]
  • 2011 (Winter) | GES 400 Graduate Research [Enrolled 1]
  • 2011 (Winter) | GES 802 TGR Dissertation [Enrolled 1]
  • 2011 (Winter) | GES 199 Honors Program [Enrolled 1]
  • 2010 (Fall) | On Sabbatical
  • 2010 (Fall) | GES 400 Graduate Research [Enrolled 1]
  • 2010 (Fall) | GES 802 TGR Dissertation [Enrolled 1]
  • 2010 (Fall) | GES 199 Honors Program [Enrolled 1]
  • 2010 (Summer) | GES 802 TGR Dissertation [Enrolled 1]
  • 2010 (Spring) | GES 381 Petrology and Petrogenesis [Enrolled 3]
  • 2010 (Spring) | GES 802 TGR Dissertation [Enrolled 1]
  • 2010 (Spring) | GES 801 TGR Project [Enrolled 1]
  • 2010 (Winter) | GES 183 CA Desert Geology [Enrolled 13]
  • 2009 (Fall) | GES 102 Earth Materials (w/ Brown) [Enrolled 11]
  • 2009 (Spring) | GES 284 Eastern Sierran Volcanism [Enrolled 4]
  • 2009 (Spring) | GES 185 Volcanology [Enrolled 6]
  • 2009 (Winter) | GES 381 Petrology and Petrogenesis [Enrolled 6]
  • 2008 (Summer) | GES 400 Graduate Research [Enrolled 2]
  • 2008 (Fall) | GES 102 Earth Materials (w/ Brown) [Enrolled 10]
  • 2008 (Fall) | GES 400 Graduate Research [Enrolled 1]
  • 2008 (Winter) | GES 802 TGR Dissertation [Enrolled 1]
  • 2008 (Winter) | GES 400 Graduate Research [Enrolled 3]
  • 2008 (Spring) | GES 802 TGR Dissertation [Enrolled 1]
  • 2008 (Spring) | GES 400 Graduate Research [Enrolled 3]
  • 2008 (Summer) | GES 801 TGR Project [Enrolled 1]
  • 2007 (Winter) | GES 179 Silicic Volcanism [Enrolled 7]
  • 2007 (Winter) | GES 400 Graduate Research [Enrolled 3]
  • 2007 (Spring) | GES 185 Volcanology [Enrolled 13]
  • 2007 (Winter) | GES 802 TGR Dissertation [Enrolled 1]
  • 2007 (Winter) | GES 801 TGR Project [Enrolled 1]
  • 2007 (Fall) | GES 299 Field Research [Enrolled 2]
  • 2007 (Fall) | GES 801 TGR Project [Enrolled 1]
  • 2007 (Fall) | GES 400 Graduate Research [Enrolled 3]
  • 2007 (Spring) | GES 400 Graduate Research [Enrolled 2]
  • 2007 (Summer) | GES 400 Graduate Research [Enrolled 2]
  • 2007 (Spring) | GES 801 TGR Project [Enrolled 2]
  • 2007 (Fall) | GES 400 Graduate Research [Enrolled 2]
  • 2007 (Fall) | GES 802 TGR Dissertation [Enrolled 1]
  • 2007 (Fall) | GES 801 TGR Project [Enrolled 1]
  • 2007 (Fall) | -- On Sabbatical
  • 2007 (Summer) | GES 802 TGR Dissertation [Enrolled 1]
  • 2007 (Summer) | GES 801 TGR Project [Enrolled 1]
  • 2006 (Fall) | GES 400 Graduate Research [Enrolled 3]
  • 2006 (Fall) | GES 299 Field Research [Enrolled 2]
  • 2006 (Fall) | GES 284 Eastern Sierran Volcanism [Enrolled 9]
  • 2006 (Spring) | GES 192 Ugrad Research in G&ES [Enrolled 1]
  • 2006 (Winter) | GES 192 Ugrad Research in G&ES [Enrolled 1]
  • 2006 (Fall) | GES 192 Ugrad Research in G&ES [Enrolled 2]
  • 2006 (Spring) | GES 400 Graduate Research [Enrolled 3]
  • 2006 (Winter) | GES 400 Graduate Research [Enrolled 3]
  • 2006 (Fall) | GES 801 TGR Project [Enrolled 1]
  • 2006 (Winter) | GES 801 TGR Project [Enrolled 1]
  • 2006 (Spring) | GES 801 TGR Project [Enrolled 2]
  • 2006 (Winter) | GES 802 TGR Dissertation [Enrolled 1]
  • 2006 (Winter) | GES 179 SILICIC VOLCANISM [Enrolled 7]
  • 2006 (Spring) | GES 185 VOLCANOLOGY [Enrolled 13]
  • 2006 (Summer) | GES 400 Graduate Research [Enrolled 4]
  • 2006 (Summer) | GES 802 TGR Dissertation [Enrolled 1]
  • 2005 (Fall) | GES 802 TGR Dissertation [Enrolled 1]
  • 2005 (Spring) | GES 212 Stanford Alpine Project [Enrolled 9]
  • 2005 (Spring) | GES 199 Honors Program [Enrolled 1]
  • 2005 | GES 285 Petrogenesis of Crustal Magmatism [Enrolled 6]
  • 2005 | GES 199 Honors Program [Enrolled 1]
  • 2005 | GES 49N Field Trip to Death Valley [Enrolled 5]
  • 2005 (Winter) | GES 802 TGR Dissertation [Enrolled 1]
  • 2005 | GES 183 CA Desert Geology [Enrolled 5]
  • 2005 | GES 199 Honors Research [Enrolled 1]
  • 2005 (Winter) | GES/ARCHLGY 118 Geoarchaology [Enrolled 11]
  • 2005 (Spring) | GES 400 Graduate Research [Enrolled 1]
  • 2005 (Summer) | GES 400 Graduate Research [Enrolled 1]
  • 2005 (Fall) | GES 400 Graduate Research [Enrolled 2]
  • 2005 (Winter) | GES 400 Graduate Research [Enrolled 3]
  • 2004 (Winter) | GES400 Graduate Research [Enrolled 1]
  • 2004 | GES 185 Volcanology [Enrolled 18]
  • 2004 (Spring) | GES 400 Graduate Research [Enrolled 1]
  • 2004 | GES49N Field Trip to Death Valley & Owens Valley [Enrolled 8]
  • 2003 | GES49N Field Trip to Death Valley & Owens Valley [Enrolled 11]
  • 2003 | GES188 / GES288 Archaeometry Seminar [Enrolled 11]
  • 2003 (Spring) | GES4 Undergraduate Seminar [Enrolled 10]
  • 2003 (Fall) | GES4 Undergraduate Seminar [Enrolled 10]
  • 2003 (Winter) | GES400 Graduate Research [Enrolled 1]
  • 2003 (Spring) | GES400 Graduate Research [Enrolled 1]
  • 2003 (Summer) | GES400 Graduate Research [Enrolled 1]
  • 2003 (Fall) | GES400 Graduate Research [Enrolled 1]
  • 2003 (Fall) | GES399 Advanced Projects [Enrolled 1]
  • 2002 | GES182 Field Seminar on Continental-Margin Volcanism [Enrolled 7]
  • 2002 | GES184 Field Seminar on Eastern Sierran Volcanism [Enrolled 3]
  • 2002 | GES469 Research in Geochemistry [Enrolled 3]
  • 2002 | GES048N Volcanoes of the Eastern Sierra Nevada [Enrolled 10]
  • 2002 | GES049N Field Trip to Death Valley and Owens Valley [Enrolled 18]
  • 2002 | GES192 Undergraduate Research in Geological and Environmental Sciences [Enrolled 1]
  • 2001 | GES001 Fundamentals of Geology [Enrolled 94]
  • 2001 | GES381 Geoarcheology [Enrolled 1]
  • 2001 | GES469 Research in Geochemistry [Enrolled 1]
  • 2001 | GES486 Research in Volcanology and Igneous Petrology [Enrolled 2]
  • 2001 | GES49N Stanford Introductory Seminar: Field Trip to Death Valley (w/ Miller) [Enrolled 6]
  • 2000 | GES486 Research in Volcanology and Igneous Petrology [Enrolled 1]
  • 2000 | GES192 Special Projects in Geological & Environmental Sciences [Enrolled 3]
  • 2000 | GES49N Field trip to Death Valley (w/ Miller) [Enrolled 13]
  • 2000 | GES001 Fundamentals of Geology [Enrolled 82]
  • 2000 | GES384 Igneous Petrogenesis [Enrolled 9]
  • 1999 | -- ON SABBATICAL 1998-99 ACADEMIC YEAR
  • 1999 | GES191S Sophomore College: Living on the Edge: Introduction to the Geologic Hazards of California [Enrolled 9]
  • 1999 | GES486 Research in Volcanology and Igneous Petrology [Enrolled 1]
  • 1999 | GES489 Research in Geochronology and Isotope Geology [Enrolled 1]
  • 1999 | GES198 Special Problems in GES [Enrolled 2]
  • 1998 | GES009 Field trip to Death Valley (w/ Miller and Stebbins) [Enrolled 22]
  • 1998 | Soph Coll Geologic Hazards of California [Enrolled 12]
  • 1998 | GES486 Research in Volcanology [Enrolled 1]
  • 1998 | GES478 Research in Petrology and Volcanology [Enrolled 1]

Publications

  • 2012 *+ | Coble, M.A., Mahood, G.A., Initial impingement of the Yellowstone plume located by widespread silicic volcanism contemporaneous with Columbia River flood basalts.  Geology: in press 
  • 2011 *+ |  Hughes, G.W., Mahood, G.A., Silicic
    calderas in arc settings: characteristics, distribution and tectonic
    controls.  Geological Society of
    America Bulletin 123: 1577-595.
  • 2011 *+ |  Carter, S.W., Wiegand, B., Mahood, G.A., Dudas, F.O., Wooden,
    J.L., Sullivan III, A.P., Bowring, S.A., Strontium isotopic evidence for
    ancestral Puebloan transport of gray-ware ceramics in the eastern Grand Canyon
    region.  Geoarchaeology: 26: 189-218.
  • 2010 *+ | Mahood, G.A., Ring, J.H., Manganelli, S., McWilliams, M.O., New 40Ar/39Ar ages reveal contemporaneous mafic and silicic eruptions during the past 160 ka at Mammoth Mountain and Long Valley caldera, California. Geological Society of America Bulletin 122: 396-407. (doi: 10.1130/B26396).
  • 2010 + |  Coble,
    M.A., Mahood, G.A.,
    Geology of the Sheldon National Antelope Refuge, Oregon and Nevada.  U.S. Geological Survey Administrative
    Report, 53 p., 1 plate.
  • 2008 *+ | Hughes, G.R., Mahood, G.A., Tectonic controls on the nature of large silicic calderas in volcanic arcs. Geology 36:627-630. (doi:10.1130/G24796A.1)

Advisee Degrees

  • 2010 | Gwyneth Hughes, Ph.D. (Research Scientist, Boise State Univ.)
  • 2008 | Sidney W. Carter, Ph.D. (Research Scientist/Lab Instructor, MIT)
  • 2006 | Jessica Simmons, B.A. 
  • 2005 | Simone Manganelli, B.A. (Graduate Study)
  • 2000 | Joshua H. Ring, M.S. (High School Earth Science Teacher, Albany NY)
  • 1998 | Cheryl A. Gansecki, Ph.D (Co-owner, Educational video company, Hawai'i)

Advisee Publications

  • 2011 * | Hughes, G.R., Reinvestigation of the 1989 Mammoth Mountain, California, seismic swarm and dike intrusion.  Journal of Volcanology and Geothermal Research 207: 106-112
  • 2011 * | Coble, M. A., Grove, M., Calvert, A. T., Calibration of Nu-Instruments Noblesse multicollector 1 mass spectrometers for argon isotopic measurements using a newly developed reference gas. Chemical Geology 290: 75-87
  • 2007 * | Carter, S.W., Sullivan, A.P., Direct procurement of ceramics and ceramic materials, “index wares”, and models of regional exchange and interaction: Implications of petrographic and geological data from the Upper Basin and Coconino Plateau. In: A.P. Sullivan and J.M. Bayman, eds, Hinterlands and Regional Dynamics in the Ancient Southwest, Univ. Arizona Press.

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