Dr. Aaron S. Yoshinobu,
Assistant Professor
Geosciences Department
Texas Tech University
222 Science Building
Lubbock, TX 79409-1053
USA

email: aaron.yoshinobu@ttu.edu http://www.gesc.ttu.edu/Fac_pages/Yoshinobu_index.html
phone: 806-742-4025, fax: 806-742-0100

EDUCATION

1999 Ph.D. University of Southern California, Los Angeles, CA.
1994 M.S. San Diego State University, San Diego, CA
1992 B.S. San Diego State Univeristy, San Diego, CA

PROFESSIONAL EXPERIENCE

• 2004: Co-Convener, Cordilleran Magmatism from the Forearc to the Hinterland, Geological Society of America, Cordilleran-Rocky Mt. Meeting, May 3-5, 2004.
• 1999-present: Assistant Professor, Dept. of Geosciences, Texas Tech University.
• 1999: Participant in the RIDGE/NSF Cyprus Field School on Ophiolites and Oceanic Crust.
• 1999: Invited Speaker, Special Symposium on Cordilleran Plutonism in the Americas, Geol. Soc. of America Cordilleran Section Meeting.
  
• 1998: Participant Geological Society of America Penrose Conference on Ophiolites and Oceanic Crust.
  
• 1998: Participant in the RIDGE/NSF Oman Winter School, February, Muscat, Oman.
  
• 1997: Shipboard Scientist, Structural Geologist, Ocean Drilling Program, Leg 176, Return to Hole 735B, Southwest Indian Ridge.
  
• 1994: Mobil Production and Exploration, U.S.A., Production Geologist, Kern Asset Team, Bakersfield, CA.
  
• 1994: Geological Society of America Short Course: GPS geodesy and active tectonics.
  
• 1991: Geological Society of America Short Course: Deformation and kinematics of high strain zones.
  

SERVICE AT TEXAS TECH UNIVERSITY

• 2001-2004: Physical Geology Lab Coordinator.
  
• 2001-present: Advisor to Sigma Gamma Epsilon, Geoscience Honor Society.
  
• 2000-present: Department webmaster.
  
• 2000-present: Organizer of Department Colloquia
  
• 2000: Committee on Graduate Recruitment, Department of Geosciences.
  
• 2000-2002: Committee to develop strategic plan for Department of Geosciences.
  
• 2000: Search Committee for Assistant Professor in GIS
  
• 1999: Ad hoc committee on TTU Field Camp.

RESEARCH AWARDS AND GRANTS

• Research Awards and Grants, 1997-2003 that have funded research at TTU
• 2004-2006: National Science Foundation, “Collaborative Research: Magma-host Rock Interactions Processes of Assimilation in the Mid-Crustal Hortavaer Intrusive Complex, Central Norway”, $229,000, Co-PI
• 2003: Texas Tech University, Faculty Research Enhancement Grant, “Plutons & Plate Motions”, $4,680, PI.
• 2001-2004: National Science Foundation, “Contact Aureole Rheology”, $114,000, PI.
• 2000: Texas Tech University, Faculty Research Enhancement Grant, ‘3-D Mapping of a Rifted Margin’, $3,500, PI.
• 1998-2000: National Science Foundation: “Investigating the magmatic and tectonic evolution of oceanic gabbros: Insights from the Tortuga Ophiolite”, Yoshinobu conceived and wrote proposal, conducted all research, $204,000
• 1998-1999: JOI-USSSP: “Foliation development across the hypersolidus to subsolidus transition: Implications to the rheology of the lower oceanic crust”, $23,000, PI.
• 1997-1998: National Geographic Society Grant for Research and Exploration: The Rocas Verdes ophiolites: Mapping the formation of oceanic crust, $37,000.
  
• 1999: Postdoctoral Fellowship, Woods Hole Oceanographic Institution, Declined.
  
• 1999: Participant in the RIDGE/NSF Cyprus Field School on Ophiolites and Oceanic Crust, Larnaca, Cyprus.
  

PROFESSIONAL AFFILIATIONS

Geological Society of America
American Geophysical Union
National Association of Geology Teachers
Robinson Jeffers Association

COURSES OFFERRED

• Physcial Geology (GEOL 1303)
• Structural Geology (GEOL 3402/4300)
  
• Tectonics (GEOL 4362/5362)
  
• Graduate Seminars in Advanced Structural Geology and Tectonics: Tectonic Geomorphology, Deformation Mechanisms and Rheology, Tectonic Evolution of Oceanic Lithosphere, Evolution of Magmatic Arcs.

SUPERVISED STUDENTS

• Ph.D. Committees – Chair
  Wayne T. Marko – Beginning Fall of 2004.
  
  
• Ph.D. Committee Member
  Yujia Li. Carbonate assimilation in magmas.
  
  
• M.S. Committees - Chair
  Greg Dumond, M.S., 2002, “Magma chamber construction in the middle crust: Insights from the Sausfjellet pluton, Bindal Batholith”, (Co-advised with Cal Barnes). Now in the PhD program at University of Massaschusettes working with Mike Williams.
• Mike Salisbury, M.S. 2003, “High-temperature deformation in the Josephine peridotite”. Salisbury has been invited to submit his M.S. work to a Geological Society of America Special Paper on the Klamath Mountains. Now working in environmental geology, Los Angeles, CA.
• Wayne Marko, M.S. 2004, “Contact Aureole Rheology”. Marko has presented his results from his M.S. research at the National Geological Society of America meeting during 2002 and 2003 (see Publications) and will begin the Ph.D. program in Geosciences at TTU in the Fall of 2004.
• Jeannette Wolak, M.S. 2004, “Constraints on magma-xenolith-host rock rheologies during stoping and magma emplacement”. Wolak presented her initial findings at the 2004 Cordilleran/Rocky Mountain GSA Meeting in Boise, ID. She is currently employed at Devon Oil and Gas.
• Ryan Krueger, M.S. candidate, “Structural evolution of the Sing Peak pendant: Implications to mid-Cretaceous deformation in the central Sierra Nevada batholith”, expected graduation May 2005. Krueger presented his initial findings at the 2004 Cordilleran/Rocky Mountain GSA Meeting in Boise, ID.
• Nathan Zimmerman, M.S. candidate, “Evaluating host rock deformation mechanisms in folds developed above laccoliths, Big Bend National Park, Texas”, expected graduation May 2005. Zimmerman was a recipient of a Geological Society of America Research Grant to partially fund his research.
  
  
• M.S. Committee Member
• Kyle Chapman, M.S. candidate, member since Spring 2000, “Petrologic evolution of the Hilstadtfjellet pluton, Bindal batholith, central Norway”, expected graduation, Dec. 2003.
• Indrani Chattopadhyay, M.S. 2003, “Crustal xenoliths from Patrillo Maar”.
• Jason Lewis, M.S. 2004, “Imaging the mantle beneath Southern California using receiver functions”.
• Kristin Reid, M.S. M.S. 2004, “Petrologic evolution of the Tosen Dikes”.
  
  
• Undergraduate Research Advisor
• Jackie Arellano, B.S. 2002. Rock/thin section preparation and analysis
• Jason Foster, B.S. 2002, McNair Scholar co-advisor, ‘Geophysical investigations of a South Plains Archeological Site’.
• Brian Cornwell, B.S. expected graduation December 2004, ‘Strain analysis of deformed conglomerates from the Helgeland Nappe Complex, central Norway’.
• David Martin, B.S. 2004, “Magmatic fabrics & stoped blocks in the Jackass Lakes pluton, central Sierra Nevada, CA’.
• Mike Blevins, B.S. 2004, ‘Structural analysis of folded dikes in the Jackass Lakes pluton, central Sierra Nevada, CA’.
• Erin Schank, B.S. expected December 2004, ‘Microstructural analysis of lower, middle, and upper crustal xenoliths from the Potrillo Maar volcano’.
  

PAST & CURRENT RESEARCH EXPERIENCE

• 2001-present: Field and microstructural analysis of contact aureole rocks using quartz and calcite piezometry and experimentally derived flow laws to evaluate rheology of contact aureoles during magma emplacement. NSF Funded through 2003.
  
• 2000-present: Deformation and magmatism in the central Norwegian Caledonides. In collaboration with Dr. Cal Barnes, Texas Tech University, Dr. Øystein Nordgulen, Norwegian Geological Survey.
  
• 1998-present: Use of olivine microstructures in rocks deformed at hypersolidus conditions from ophiolites and modern oceanic crust to constrain the rheological parameters of partially molten gabbro, with implications to the viscosity of the lower crust beneath fast-spreading oceanic ridges.
  
• 1997-present: Deformation, melt migration, and the rheology of slow-spreading lower oceanic crust: ODP Leg 176, return to Hole 735B, Southwest Indian Ridge.
  
• 1997: Shipboard Scientist, Structural Geologist, JOIDES-Resolution, on ODP Leg 176, return to Hole 735B, Southwest Indian Ridge.
  
• 1996-present: Nature of deformation in “cumulate” rocks during oceanic spreading: Examples from the Rocas Verdes ophiolites, southern Chile and Josephine ophiolite, California, with implications to the partitioning of deformation at slow-spreading oceanic ridges.
  
• 1996-1998: Two-dimensional, finite-difference thermal modeling of fault-controlled magma emplacement and magma solidification in arc settings.
  
• 1994-1995: Pluton roofs: Testing pluton emplacement mechanisms around shallow-crustal granitoids in Northwestern Argentina.
  
• 1993-1994: Nature and significance of contact metamorphic volume loss and mass transfer during pluton emplacement.
  
• 1991-1995: Timing of pluton emplacement and regional deformation in the northern Sierra: Implications to Middle Jurassic orogenesis.
  
• 1991-1994: Geochemical analysis of Lower Paleozoic chert-argillite sequences to determine depositional environment and provenance of clastic material and the behavior of the REE during deformation and contact metamorphism.
  
• 1992-1993: Kinematic and microstructural study of the Cuyamaca-Laguna Mountains shear zone, Peninsular Ranges, California.
  
• 1990-1991: Field mapping in the Sierra Mejor metamorphic core complex, NE Baja California, Mexico.
  
• 1989-1990: Field mapping of lower and upper plate rocks of the Pinyon Mountains extensional detachment fault, SE California.

RECENT COLLABORATORS

Drs. Cal Barnes (Texas Tech), Henry Dick (Woods Hole Oceanographic Institute), T. Kenneth Fowler, Jr. (Exxon Prod. Research), Gary H. Grity (San Diego St. Univ.) Richard Hanson (Texas Chris. Univ.), Gregory Harper (SUNY Albany), Greg Hirth (Woods Hole Oceanographic Institute), Benoit Ildefonse (U. Montpellier, France), Barbara John (U. Wyoming), Peter Kelemen (Woods Hole Oceanographic Institute), Bernd Leiss, University of Gottingen, Eduardo Llambias (U. La Plata, Argentina), Brendan McNulty (CSUDH), Bob Miller (SJSU), Øystein Nordgulen (Norwegian Geological Survey), David Okaya (USC), Scott R. Paterson (Ph.D. Advisor, USC), Tore Prestvik (NTSC, Trondheim), Sarah Roeske (UC Davis), Patrick Trimby (Utrecth Univ.).

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updated 01/2005