lars n hansen curriculum vitae - WordPresscom

120172_7lnhansencv2017.pdf LARS N. HANSEN CURRICULUM VITAE

Education

Ph.D., Geophysics2012University of Minnesota

M.S., Geology2007University of Wyoming

B.S. Earth Science2005CalPoly, San Luis Obispo

Appointments

Associate Professor2013-Present Dept. Earth Sciences, U. Oxford Postdoctoral Scholar2012-2013Mantle Processes Group, Stanford U. Visiting ScientistSummer 2012Lamont-Doherty Earth Observatory Postdoctoral ScholarSummer 2012Rock and Mineral Physics Lab, U. Minn

Awards

NSF Earth Sciences Postdoctoral Fellowship (declined)2013 AGU Mineral and Rock Physics Graduate Research Award2013 American Geophysical Union, Outstanding Student Paper2011 Richard Clarence Dennis Graduate Fellowship (25% stipend)2009-2011

Outstanding Teaching Assistant, UMN ($500)2009

ExxonMobil Student Research Award ($5000)2008

Department of Geology and Geophysics Fellowship (partial stipend)2007-2008 Geological Society of America, Outstanding Student Proposal2006 GEM Systems Magnetics Student Essay Contest Winner ($1,250)2006

NASA EPSCoR Fellowship (full stipend) 2005-2007

Research Funding

Current support

Royal Society, Research Grant: "Understanding the mechanics of large deformations in materials through in situ microscopy" PI: Lars Hansen; £15,000; 1/4/17-31/3/18. Advanced Photon Source, General User Proposal: "An experimental study of size effects in olivine

deforming via low-temperature plasticity" PI: Lars Hansen; Co-I: William Durham (Earth,

Atmospheric, and Planetary Sciences, MIT); Co-I: David Goldsby (Earth and Environmental Science, University of Pennsylvania); Co-I: David Kohlstedt (Department of Earth Sciences, University of

Minnesota); 26/7/17-31/7/17.

NERC, Standard Grant: "Seismic signature of serpentinites in subduction zones: A rock physics approach" PI: Nicolas Brantut (Department of Earth Sciences, University College London); Co-I: Lars Hansen; Co-I: Thomas Mitchell (Department of Earth Sciences, University College London);

£65,895 (Oxford portion).

NERC, New Investigator Standard Grant: "A new method for mapping stresses in mantle rocks: Dislocation density from electron-backscatter diffraction" PI: Lars Hansen; Co-I: Angus Wilkinson (Department of Materials, University of Oxford); £483,386; 12/1/2015-11/01/2018. LARS N. HANSEN CURRICULUM VITAE NSF, EAR: "How anisotropic is the viscosity of Earth's mantle?" PI: David Kohlstedt; $320,000 to date; started 15/7/12.

Past support

John Fell Oxford University Press Research Fund: "Development of a high-temperature deformation apparatus for geological materials" PI: Lars Hansen; £71,130; 2/10/13-1/10/14. NSF, EAR Postdoctoral fellowship: "Effect of pyroxene on mantle viscosity constrained by natural shear zones" PI: Lars Hansen; Faculty sponsor: Jessica Warren (Stanford); $170,000; 278/13-26/8/15. NSF, EAR 1015343: "Is grain-boundary sliding the dominant deformation mechanism in Earth's Mantle?" PI: Mark Zimmerman; $330,001; 15/7/10-30/6/13. Geological Society of America Student Research Grant: "Deformation associated with the evolution of an oceanic core complex." $2,600 for 9/06-8/07.

Invited Talks

University of Cambridge, Bullard Seminar, Spring 2017

"Causes and consequences of upper-mantle seismic anisotropy: The link between olivine

microstructure and the nature of plate tectonics" University of Texas Institute for Geophysics, Spring 2017

"Causes and consequences of upper-mantle seismic anisotropy: The link between olivine

microstructure and the nature of plate tectonics"

University of College London, Winter 2017

"From nano plates to macro pokes: New insights on the strength of the lithosphere from high- resolution characterization of olivine" EGU General Assembly, session TS3.3/EMRP4.23, 2017 "Laboratory experiments, high angular-resolution EBSD, and micromechanical modelling reveal residual stresses and their distribution in deformed olivine" EGU General Assembly, session GD7.2/EMRP4.9/SM10.2, 2017 "The nature of the lithosphere-asthenosphere boundary from laboratory investigations of olivine anisotropy" Oxford Geology Group, Thursday Lecture Series, Winter 2017 "From nano plates to macro pokes: New insights on the strength of tectonic plates from high- resolution characterization of olivine"

University of Plymouth, Fall 2016

"From nano plates to macro pokes: New insights on the strength of the lithosphere from high- resolution characterization of olivine" Gordon Research Conference on Rock Deformation, Summer 2016 "Deformation mechanisms in olivine: New insights from high-resolution investigations" Isaac Newton Institute, Melt in the Mantle Workshop 2, Spring 2016 "The development of seismic anisotropy in partially molten rocks: Laboratory observations" Los Alamos National Laboratory, Frontiers in Geoscience Colloquium, Spring 2016 "Plastic and elastic anisotropy in olivine: Understanding plate boundaries in the laboratory" University of Manchester, SEAES Seminar, Spring 2016 LARS N. HANSEN CURRICULUM VITAE

"Causes and consequences of upper mantle seismic anisotropy: The link between olivine

microstructure and the nature of plate tectonics"

Bayerisches Geoinstitut, Fall 2015

"Laboratory constraints on plate boundary formation: Microstructural evolution and mechanisms of strain localization" Gordon Research Conference on the Interior of the Earth, Spring 2015 "Laboratory constraints on plate boundary formation: Microstructural evolution and mechanisms of strain localization"

Earthquake Research Institute, Spring 2015

"Causes and consequences of upper-mantle seismic anisotropy: The link between olivine

microstructure and the nature of plate tectonics"

Japan Geoscience Union Meeting, Spring 2015

"Anisotropic viscosity of olivine aggregates: A laboratory, field, and numerical approach" Workshop on Comparative Tectonics and Geodynamics of Venus, Earth, and Rocky Exoplanets,

California Institute of Technology, Spring 2015

"New insights into mantle rheology from laboratory experiments: Grain-boundary sliding and viscous anisotropy" École Normale Supérieure, Séminaire du Laboratoire de Géologie, Winter 2015

"Laboratory insight into the nature of plate tectonics: Anisotropic viscosity and strain localization"

Royal Holloway, University of London, Lyell Geoscience Society, Winter 2015 "All things anisotropic: New insight into the rheology of mantle materials" British Geophysical Association, New Advances in Geophysics, The Lithosphere-Asthenosphere System:

The Nature of Tectonic Plates, Winter 2015

"Olivine textural evolution constrains the nature of the lithosphere-asthenosphere boundary" University of Oxford, Materials Science Department Colloquium, Fall 2014 "Deformation of geological materials: The link between olivine microstructure and plate tectonics" University of Leeds, Geoscience Seminar, Fall 2014

"Causes and consequences of upper mantle seismic anisotropy: The link between olivine

microstructure and the nature of plate tectonics" University of Edinburgh, Earth and Planetary Science Seminar, Fall 2014

"Causes and consequences of upper mantle seismic anisotropy: The link between olivine

microstructure and the nature of plate tectonics"

AGU Fall Meeting, Session DI007, 2014

"Constraints on the nature of the lithosphere-asthenosphere boundary: Comparison of observed textural evolution to measured seismic anisotropy" Geomaterials sample preparation for microscopy workshop, Fall 2014 "Section preparation for electron-backscatter diffraction: Ultrapolishing of geomaterials and its applications" National Oceanography Centre, Southampton, Geology, Geochemistry, and Geophysics seminar, Spring 2014
"Causes and consequences of upper-mantle seismic anisotropy: Implications of olivine textures for geodynamics"

EGU General Assembly, Session TS3.1, 2014

"Protracted fabric evolution in olivine: Implications for the relationship among strain,

crystallographic fabric, and seismic anisotropy"

AGU Fall Meeting, Session T026, 2013

LARS N. HANSEN CURRICULUM VITAE "Mylonitic deformation at the Kane Oceanic Core Complex: Implications for the rheological characteristics of oceanic detachment faults" Deformation mechanisms, rheology, and tectonics, Leuven, Belgium, Summer 2013 "The importance of grain-boundary sliding during deformation of geological materials" Stanford University, Geological and Environmental Sciences Department Seminar, Spring 2013 "The role of anisotropic viscosity in shear zone formation: Insights from the laboratory and field" University of California, Berkeley, Seismological Laboratory Seminar, Spring 2013

"Feeling olivine fabrics: Implications of seismic anisotropy for the mechanical properties of the upper

mantle" University of Oxford, Department of Earth Sciences, Spring 2013 "From the atom to the plate: How nanoscale defects control kilometer-scale processes"

AGU Fall Meeting, Session DI011, 2012

"Causes and consequences of upper-mantle seismic anisotropy: Insights into olivine crystallographic fabrics from high-strain laboratory experiments" Lamont-Doherty Earth Observatory; Seismology, Geology, and Tectonophysics Seminar, Summer 2012 "Evolution of the viscosity of Earth's upper mantle: Grain-boundary sliding and the role of microstructure in olivine deformation" Carleton College, Geology Friday Seminar, Spring 2011 "Deformation mechanisms in the upper mantle: How nanoscale defects control kilometer-scale processes"

Supervision

Postdoctoral mentor

2016-2019, Emmanuel David (hosted by UCL)

2015-2018, David Wallis

Doctoral advisor (ifinishing years listed)

2021, Diana Avadanii, Thomas Breithaupt

2020, Catherine (Rellie) Goddard

Master's advisor

2016-2017, Diana Avadanii, Thomas Briethaupt, Imogen Kempton (Chemistry)

2015-2016, Sam Cornish, Charis Horn, Asher Carruthers (Engineering)

2014-2015, Robert Fox

Teaching

University College Tutorial Fellow, 144 h/yr2014-present

1st year Calculus, 8 h/yr2014-present

2nd year Igneous Petrology, 8 h/yr2014-present

3rd year Rock Deformation, 4 h/yr2014-present

4th year Mantle rheology, dynamics, and tomography 4 h/yr2015-present

4th year Greece field trip 10 days/yr2014-present

Doctoral Training Program, Linking Earth's Brittle Shell to its Ductile Interior2014-present LARS N. HANSEN CURRICULUM VITAE

Professional service

Short-course organizer, Metamorphic Studies Group 2017 Co-organized and presented in EBSD short course for metamorphic petrologists. Workshop organizer, Royal Microscopy Society EBSD 2017 Co-organized and presented in EBSD tutorial workshop for beginners. Hosted in Oxford Department of Earth Sciences.

Workshop organizer, Isaac Newton Insititute

2016, Organizing workshop on Magma Dynamics at the Grain Scale as part of the four month Isaac

Newton Institute on Melt in the Mantle.

Chair, Gordon Research Seminar on Rock Deformaition

2014, Multi-scale and multi-phase systems in rock deformation

Member, Lehmann Medal Committtee, American Geophysical Union

2013-2017, Committee to decide awardee for outstanding contributions to the understanding of the

structure, composition, and dynamics of Earth's mantle and core. Co-convener, American Geophysical Union Fall Meeiting:

2015, Session T33H, Creep deformation in the lithosphere: Fabrics, rheology, and derived physical

properties

2014, Session MR007, Rheology of Earth's mantle: Linking observation, theory, and experiment

2013, Session T020, Linking Ductile Deformation with Geochemistry: The Role of Fluids, Melts and

Lithology

2012, Session T036, Observations and explanations of sharp velocity decreases in the uppermost

mantle

2011, Session T011, From faulting to flow: Toward quantifying dynamic weakening in the lithosphere

Co-convener, European Geosciences Union General Assembly

2015, Session GD7.1, Long-term rheological behavior of the crust and mantle inferred from

observations and models at laboratory and geological time and spatial scales

2015, Session TS2.1, Ductile deformation: Microstructures, processes, and mechanisms

Ariticle reviewer for (parentheitical indicates number of ariticles, not including resubmittted manuscripts):

Earth and Planetary Science Letters (6); Geology (3); Geochemistry, Geophysics, Geosystems (4); Geophysical Journal International (1); Geophysical Research Letters (2); Journal of Geophysical

Research (5); Journal of Petrology (1); Journal of Structural Geology (1); Microscopy and

Microanalysis (1); Nature Communications (1); Nature Geoscience (3); Physics of Earth and Planetary Interiors (1); Proceedings of the National Academy of Sciences (1); Science Advances (1);

Solid Earth (1); Tectonophysics (2)

Grant proposal reviewer for (parentheitical indicates number of proposals): U.S. National Science Foundation (3), Royal Society-Dorothy Hodgkin Fellowship (1), European

Research Council (1)

LARS N. HANSEN CURRICULUM VITAE

Departmental service

Outreach

2017, Through the Looking Glass, Microscopy Exhibition

2016, Lesser Spotted Science

2016, Oxford Earth Sciences Alumni Networking, Old Bank of England

2015-2016, Further Maths - What's Next?

2014-2015, UNIQ summer school;

Committtees and Panels

2016-present, Undergraduate Course Advisor

2016-present, Teaching Committee

2016-present, NERC Demand Management Panel

2015-2017, DTP interview panel

2015, DeepTime interview panel

2014-present, Research Committee

Postgraduate Viva internal examiner

2016, Brendan Dyck, Johnny Hunter, Mike Stock

2015, Harriet Rawson

Postgraduate conifirmaition of status panel

2017, Tyler Ambrose, Muhammed Al-Fahmi, Thomas Lamont

2014, Brendan Dyck

Postgraduate transfer of status panel

2017, Anna Bidgood, Frey Fyfe, Harriet Godwin, Marta Pienkowska

2016, Tyler Ambrose, Thomas Lamont

2014, Jonathan Burley

Postdoc department mentor

2016-present, Marion Thomas

College service

Outreach

2016, Ditchley 2 Panel Member

2016, Speaker at Univ Alumni Day

2016, Physical Sciences Day

Graduate advisor (by intake year)

James King (2016), Amber Madden-Nadeau (2016), Jonathan Hunt (2015), Lauren O'Connor (2014)

Committtees and Panels

2016-2017, Old Members Trust Student Support and Access Committee

2016-2017, Standing Committee on Student Support (Senior Member)

LARS N. HANSEN CURRICULUM VITAE

2015, Junior Research Fellow hiring panel

2014, Stage 3 Academic Disciplinary Panel

Professional Memberships

American Geophysical Union

European Geosciences Union

Geological Society of America

Microbeam Analysis Society

Physical Properties of Earth Materials

Articles in review

Y. Boneh, D. Wallis*, L. N. Hansen, M. J. Krawczynski, P. Skemer, Oriented grain growth and

modification of 'frozen anisotropy' in the lithospheric mantle, submitted to Earth Planet. Sci. Lett.

D. Wallis*, G. E. Lloyd, L. N. Hansen, The transition from dislocation creep to frictional failure in

carbonate faults: Schmid factor analysis of the Karakoram Fault, NW India, submitted to Earth

Planet. Sci. Lett.

A. Pommier, D. L. Kohlstedt, L. N. Hansen, S. J. Mackwell, M. Tasaka, F. Heidelbach, K. Leinenweber,

Experimental investigation of the effect of shear on the electrical properties of polycrystalline olivine,

submitted to J. Geophys. Res.

Peer-reviewed articles

(223 citations, H-index = 8 from Google Scholar as of 28/7/2016, * denotes mentored student or postdoc)

L. N. Hansen, C. Conrad, Y. Boneh, P. Skemer, J. M. Warren, D. L. Kohlstedt (2016), Viscous anisotropy

of textured olivine aggregates, Part 2: Micromechanical model, J. Geophys. Res., 121, doi:10.1002/2016JB013240.

L. N. Hansen, C. Qi, J. M. Warren (2016), Olivine anisotropy suggests Gutenberg discontinuity is not the

base of the lithosphere, Proceedings of the National Academy of Sciences, 113 (38), 10503-10506, doi:10.1073/pnas.1608269113. D. Wallis*, Lars N. Hansen, T. B. Britton, and A. J. Wilkinson (2016), Geometrically necessary

dislocation densities in olivine obtained using high-angular resolution electron backscatter diffraction,

Ultramicroscopy, 168, 34-45, doi:10.1016/j.ultramic.2016.06.002. T. B. Britton, J. Jiang, Y. Guo, A. Vilalta-Clemente, D. Wallis*, L. N. Hansen, A Winkelmann, A. J. Wilkinson (2016), Tutorial: Crystal orientations and EBSD - Or which way is up?, Materials Characterization, doi:10.1016/j.matchar.2016.04.008. L. N. Hansen, J. M. Warren, M. E. Zimmerman, D. L. Kohlstedt (2016), Viscous anisotropy of textured olivine aggregates, Part 1: Measurement of the magnitude and evolution of anisotropy, Earth Planet. Sci. Lett., 445, 92-103, doi:10.1016/j.epsl.2016.04.008. J. A. Tielke, L. N. Hansen, M. Tasaka, C. Meyers, M. E. Zimmerman, D. L. Kohlstedt (2016), Observations of grain-size sensitive power-law creep of olivine aggregates over a large range of lattice-preferred orientation strength, J. Geophys. Res.,121, 506-516, doi:10.1002/2015JB012302. P. Skemer and L.N. Hansen (2016), Inferring mantle flow from seismic anisotropy: An experimental perspective, Tectonophysics, 668-669, 1-14, doi:10.1016/j.tecto.2015.12.003. LARS N. HANSEN CURRICULUM VITAE

L. N. Hansen and J. M. Warren (2015), Quantifying the effect of pyroxene on deformation of peridotite

in a natural shear zone, J. Geophys. Res., 120, doi:10.1002/2014JB011584. L. N. Hansen, Y. -H. Zhao, M. E. Zimmerman, D. L. Kohlstedt (2014), Protracted fabric evolution in olivine: Implications for the relationship among strain, crystallographic fabric, and seismic anisotropy, Earth Planet. Sci. Lett., 387, 157-158.

L. N. Hansen, M. Cheadle, B. John, H. Dick, B. Tucholke, M. Tivey (2013), Mylonitic deformation at the

Kane Oceanic Core Complex: Implications for the rheological characteristics of oceanic detachment faults, Geochem., Geophys., Geosys., (14) 8, 3085-3108.

P. Skemer, J. M. Warren, L. N. Hansen, G. Hirth, P. B. Kelemen (2013), The influence of water and LPO

on the initiation and evolution of mantle shear zones, Earth Planet. Sci. Lett., 375, 222-233. L. N. Hansen, M. E. Zimmerman, D. L. Kohlstedt (2012), Laboratory measurements of the anisotropic viscosity of olivine, Nature, 492, 415-418. L. N. Hansen, M. E. Zimmerman, D. L. Kohlstedt (2012), The influence of microstructure on deformation of olivine in the grain-boundary sliding regime, J. Geophys. Res., 117, B09201. L. N. Hansen, M. E. Zimmerman, A. Dillman, D. L. Kohlstedt (2012), Strain localization in olivine aggregates at high temperature: An experimental comparison of constant-strain-rate and constant- stress boundary conditions, Earth Planet. Sci. Lett., 333-334, 134-145.

L. N. Hansen, M. E. Zimmerman, D. L. Kohlstedt (2011), Grain-boundary sliding in San Carlos olivine:

Flow law parameters and crystallographic-preferred orientation, J. Geophys. Res., 116, B08201. K. A. Hoffman, B. S. Singer, P. Camps, L. N. Hansen, K. A. Johnson, S. Clipperton, and C. Carvallo

(2008), Stability of mantle control over dynamo flux since the mid-Cenozoic, Phys. Earth Planet. In.,

169, 20-27.

Book chapters

D.L. Kohlstedt and L. N. Hansen (2015), Constitutive equations, rheological behavior, and viscosity of

rocks, in: Gerald Schubert (editor-in-chief) Treatise on Geophysics, 2nd edition, 2, 441-472. Conference abstracts (supervisees: *postdoc, **doctoral student, ***Master's student)

L. Mameri, A. Tommasi, J. Signorelli, L. Hansen (2017), Mechanical anisotropy of olivine polycrystals:

A comparision between laboratory data and viscoplastic self-consistent models, Goldschmidt, Paris.

C. P. Conrad, L. N. Hansen (2017), Interplay between Tectonic Plate Motions, Anisotropic Viscosity, and

the Development of Rock Fabrics in the Asthenosphere, EGU General Assembly. L. Hansen, C. Qi, J. Warren, D. Kohlstedt, B. Holtzman, and D. Wallis* (2017), The nature of the lithosphere-asthenosphere boundary from laboratory investigations of olivine anisotropy, EGU

General Assembly.

L. N. Hansen, D. Wallis*, I. Kempton***, R. Lebensohn, and A. Wilkinson (2017), Laboratory experiments, high angular-resolution EBSD, and micromechanical modelling reveal residual stresses and their distribution in deformed olivine, EGU General Assembly. Y. Boneh, D. Wallis*, L. N. Hansen, M. Krawczynski, and P. Skemer (2017), Anisotropic grain growth and modification of 'frozen texture' in the lithospheric mantle, EGU General Assembly. D. Avadanii***, L. N. Hansen, D. Wallis*, and D. Waters (2017), A new barometer from stress fields around inclusions, EGU2017-6563, EGU General Assembly. LARS N. HANSEN CURRICULUM VITAE

E. C. David*, N, Brantut, L. N. Hansen, and T. M. Mitchell (2017), Mechanics and seismic signature of

brittle deformation of serpentinites, EGU General Assembly. T. K. Ambrose**, D. Wallis*, L. Hansen, D. Waters, M. Searle (2017), Controls on the rheology and mineralogy of peridotite in a palaeosubduction zone: a transect through the base of the Oman-UAE ophiolite, Tectonic Studies Group, Liverpool. D. Avadanii***, D. Wallis*, L. Hansen, D. Waters (2017), A new barometer from stress fields around inclusions, Tectonic Studies Group, Liverpool.

T. Breithaupt***, L. Hansen, D. Wallis*, D. Armstrong (2017), Low-temperature plasticity of plagioclase

from nanoindentation, Tectonic Studies Group, Liverpool.

E. C. David*, N, Brantut, L. N. Hansen, and T. M. Mitchell (2017), Mechanics and seismic signature of

brittle deformation of serpentinites, Tectonic Studies Group, Liverpool. L. Hansen, K. Kumamoto, C. Thom, D. Wallis, D. Armstrong, D. Goldsby, A. Wilkinson, J. Warren

(2017), Size effects in olivine: Reconciling 40 years of study into plasticity near the brittle-ductile

transition, Tectonic Studies Group, Liverpool.

I. Kempton***, D. Wallis, L. Hansen (2017), Transient creep of single crystals of San Carlos olivine,

Tectonic Studies Group, Liverpool.

K. M. Kumamoto, D. Wallis*, L. N. Hansen, D. E. J. Armstrong, A. Wilkinson, J. M. Warren (2016), Olivine strength in the low-temperature plasticity regime measured via spherical nanoindentation,

AGU Fall Meeting.

K. M. Kumamoto, D. Wallis*, L. N. Hansen, D. E. J. Armstrong, A. Wilkinson, J. M. Warren (2016), Spherical nanoindentation of olivine and implications for the upper mantle, Gordon Research Conference on Rock Deformation, Proctor Academy, New Hampshire.

D. Wallis*, L. N. Hansen, T. B. Britton, A. J. Wilkinson (2016), The roles of dislocation interactions and

strain gradients in dislocation creep of olivine investigated by HR-EBSD, Gordon Research Conference on Rock Deformation, Proctor Academy, New Hampshire. D. Armstrong, K. Kumamoto, D. Wallis*, S. Roberts, A. Wilkinson, J. Warren, L. Hansen (2016), Indentation fracture exdperiments on single crystal olivine from 300 K to 1100 K, The Minerals, Metals, and Materials Society Annual Meeting and Exhibition.

D. Wallis*, L. N. Hansen, T. B. Britton, A. J. Wilkinson (2016), The role of dislocations in varied olivine

deformation mechanisms investigated using high-angular resolution electron backscatter diffraction,

EGU General Assembly.

D. Wallis*, L. N. Hansen, T. B. Britton, A. J. Wilkinson (2015), Determining olivine dislocation densities

and deformation mechanisms by HR-EBSD, AGU Fall Meeting.

C. P. Conrad and L. N. Hansen (2015), Interplay between Tectonic Plate Motions, Anisotropic Viscosity,

and the Development of Rock Fabrics in the Asthenosphere, AGU Fall Meeting. A. K. Fayon and L. N. Hansen (2015), Effects of deformation on apatite (U-Th)/He single-grain ages,

GSA Annual Meeting.

J. M. Warren, L. N. Hansen, K. M. Kumamoto (2015), Using naturally deformed peridotites to constrain

models of mantle deformation, International Workshop on Modeling of Mantle and Lithosphere

Dynamics, Olerons, France.

L. N. Hansen (2015), Laboratory constraints on plate boundary formation: Microstructural evolution and

mechanisms of strain localization, Gordon Research Conference on the Interior of the Earth, Mount

Holyoke College, Maine.

LARS N. HANSEN CURRICULUM VITAE L. N. Hansen, C. P. Conrad, J. M. Warren, D. L. Kohlstedt (2015), Anisotropic viscosity of olivine aggregates: A laboratory, field, and numerical approach, JpGU Annual Meeting. L. N. Hansen (2015), New insights into mantle rheology from laboratory experiments: Grain-boundary sliding and viscous anisotropy, Comparative Tectonics and Geodynamics workshop, Cal Tech. D. Wallis*, L. N. Hansen, A. J. Wilkinson (2015), Sensitivity testing of geometrically necessary dislocation density in olivine from high-resolution EBSD, Micro-DICE Conference, Montpellier. L. N. Hansen, C. P. Conrad, J. M. Warren, D. L. Kohlstedt (2015), Anisotropic viscosity of olivine aggregates: A laboratory, field, and numerical approach, Micro-DICE Conference, Montpellier. L. N. Hansen, C. P. Conrad, J. M. Warren, S. I. Natarov, D. L. Kohlstedt (2014), Development of Anisotropic Fabric and Associated Anisotropic Viscosity within Lithospheric and Asthenospheric

Shear Zones, AGU Fall Meeting.

L. N. Hansen, C. Qi, K. Kumamoto, J. M. Warren, R. Katz, D. L. Kohlstedt (2014), Constraints on the nature of the lithosphere-asthenosphere boundary: Comparison of observed textural evolution to measured seismic anisotropy, AGU Fall Meeting. D. L. Kohlstedt, L. N. Hansen, S. Mei, M. E. Zimmerman (2014), Constraints on deformation mechanisms and rheological properties of lithospheric mantle derived from laboratory experiments,

GeoFrankfurt.

L. N. Hansen and A. J. Wilkinson (2014), Mapping dislocation density in olivine with electron- backscatter diffraction, Gordon Research Conference on Rock Deformation, Proctor Academy, New

Hampshire.

L. N. Hansen, Y. -H. Zhao, M. E. Zimmerman, D. L. Kohlstedt (2014), Protracted fabric evolution in olivine: Implications for the relationship among strain, crystallographic fabric, and seismic anisotropy, EGU General Assembly.

L. N. Hansen, J. M. Warren (2013), Quantifying the effect of pyroxene on peridotite deformation in a

natural shear zone., AGU Fall Meeting. L. N. Hansen, M. J. Cheadle, B. E. John, S. Swapp, H. J. Dick, B. E. Tucholke, M. Tivey (2013) Mylonitic deformation at the Kane oceanic core complex: Implications for the rheological behavior of oceanic detachment faults, AGU Fall Meeting.

P. Skemer, J. M. Warren, L. N. Hansen, G. Hirth, P. B. Kelemen (2013), Initiating localized deformation

in the mantle, AGU Fall Meeting. D. L. Kohlstedt, L. N. Hansen, D. L. Goldsby, M. E. Zimmerman (2013), Dislocation-accommodated grain boundary sliding - from olivine to ice, AGU Fall Meeting. L. N. Hansen, D. L. Goldsby, and D. L. Kohlstedt (2013), The importance of grain-boundary sliding during deformation of geological materials, Deformation Mechanisms, Rheology, and Tectonics,

Leuven, Belgium.

L. N. Hansen, J. M. Warren, M. E. Zimmerman, D. L. Kohlstedt, P. Skemer, G. Hirth (2013), Anisotropic

viscosity and fabric evolution from laboratory experiments and field observations, EGU General

Assembly.

L. N. Hansen, M. E. Zimmerman, D. L. Kohlstedt (2012), Causes and consequences of upper-mantle seismic anisotropy: Insights into olivine crystallographic fabrics from high-strain laboratory experiments, Eos Trans. AGU Fall Meet. Suppl., Abstract DI24A-05. C. P. Conrad, S. Natarov, L. N. Hansen, J. van Summeren (2012), Modulation of Plate Motions by Viscosity Anisotropy in the Asthenopshere, AGU Fall Meet. Suppl., Abstract DI24A-01. LARS N. HANSEN CURRICULUM VITAE L. N. Hansen, Y.-H. Zhao, M. E. Zimmerman, D. L. Kohlstedt (2012), Protracted fabric evolution in olivine: From A to D and back again, Gordon Research Conference on Rock Deformation, Proctor

Academy, New Hampshire.

M. W. Pendleton*, L. N. Hansen, M. E. Zimmerman, D. L. Kohlstedt (2012), Anisotropic viscosity of olivine-chromite-MORB aggregates, 43rd Lunar and Planetary Science Conference, Abstract 2036. E. Thompson*, A. M. Dillman, L. N. Hansen, D. L. Kohlstedt (2011), Contribution of Grain Boundary Sliding to Diffusion Creep of Forsterite, Eos Trans. AGU, 92(52), Fall Meet. Suppl., Abstract T52B- 03.

L. N. Hansen, M. E. Zimmerman, D. L. Kohlstedt (2011), A high-strain flow law for olivine: Grain-size

sensitivity and crystallographic fabric, Eos Trans. AGU, 92(52), Fall Meet. Suppl., Abstract MR24A- 06.

L. N. Hansen, M. E. Zimmerman, A. M. Dillman, D. L. Kohlstedt (2011), Strain localization in olivine

aggregates at high temperature: An experimental comparison of constant-strain-rate and constant- stress boundary conditions, GSA Annual Meeting, Minneapolis, Minnesota.

L. N. Hansen, M. E. Zimmerman, D. L. Kohlstedt (2011), Anisotropic viscosity of iron-bearing olivine

deformed to high strain, EarthScope Institute on the Lithosphere-Asthenosphere Boundary, Portland,

Oregon.

S. Demouchy, L. N. Hansen, M. E. Zimmerman, A. Tommasi, F. Barou, D. L. Kohlstedt (2011), Water weakening in dunite: Highlights from torsion experiments, Goldschmidt Geochemisty Conference,

21, Conference Proceedings.

L. N. Hansen, M. E. Zimmerman, A. M. Dillman, D. L. Kohlstedt (2011), The influence of shear-zone boundary conditions on strain localization: Results from experimental investigations of olivine rheology at high temperature and high pressure, Penrose Conference on Deformation Localization in

Rocks: New advances, Cap de Creus, Spain.

L. N. Hansen, M. E. Zimmerman, D. L. Kohlstedt (2010), Experimental determination of conditions for

strain localization in olivine deformed to high strains at high temperature: A comparison of constant

stress and constant rate boundary conditions, Gordon Research Conference on Rock Deformation,

Tilton, New Hampshire.

L. Hansen, M. Cheadle, B. John, S. Swapp, H. Dick, B. Tucholke, M. Tivey (2010), Mylonitic detachment faulting on the Mid-Atlantic Ridge at the Kane Fracture Zone oceanic core complex: Implications for the rheological characteristics of oceanic detachment faults, Chapman Conference on Detachments in Oceanic Lithosphere: Deformation, Magmatism, Fluid Flow and Ecosystems, Agros,

Cyprus.

L. N. Hansen, M. E. Zimmerman, D. L. Kohlstedt (2009), Lattice and shape preferred orientation of olivine deformed by dislocation-accommodated grain-boundary sliding, Eos Trans. AGU, 90(52), Fall

Meet. Suppl., Abstract DI41B-1794.

L. N. Hansen, M. E. Zimmerman, D. L. Kohlstedt (2009), An experimental investigation of dislocation- accommodated grain-boundary sliding in San Carlos olivine, Deformation Mechanisms, Rheology, and Tectonics, Liverpool, England.

L. Hansen, M. Cheadle, B. John, S. Swapp, H. Dick, B. Tucholke, M. Tivey (2007), Styles of detachment

faulting at the Kane Oceanic Core Complex, Eos Trans. AGU, 88(52), Fall Meet. Suppl., Abstract

T51F-07.

L. Hansen, M. Cheadle, B. John, S. Swapp, H. Dick, B. Tucholke, M. Tivey (2006), Deformation associated with the evolution of an oceanic core complex, Gordon Research Conference on Rock

Deformation, Big Sky, Montana.

LARS N. HANSEN CURRICULUM VITAE M. Cheadle, B. Tucholke, M. Tivey, H. Dick, J. Schwartz, L. N. Hansen (2005), The nature of detachment faulting at the Kane megamullion: Initial Results, Eos Trans. AGU, 86(52), Fall Meet.

Suppl., Abstract T41D-1331.

K. Hoffman, P. Camps, L. Hansen, K. Johnson, C. Carvallo (2005), Early Miocene R-N reversal recorded in lavas from Queensland, Australia: Evidence for stationary mantle-held flux over the past 21 Ma,

IAGA Meeting, Toulouse, France.

K. Hoffman, P. Camps, B. Singer, L. Hansen, K. Johnson, S. Clipperton, C. Carvallo (2005), Early Miocene R-N reversal recorded in lavas from Queensland, Australia: Evidence for stationary mantle- held flux over the past 21 Ma, AGU Joint Assembly, New Orleans, Louisiana.