Welcome! I set up this wordpress site to keep my colleagues up to date on my published research.

Here’s a complete Curriculum Vitae with chronological list of publications and other information: Hayman_CV_090216

For basic contact information, see my UTIG site

or my Jackson School Profile

Scroll down for an abbreviated description of publications by theme, and links to the journals where they are published. If you cannot access the articles because your institution has no subscription, please email me and I will send you a .pdf.

Email: hayman <at> (and replace the “<at>” with an “@”).

Additional links, including to some open .pdfs on line, see:


New (as of September 25, 2016)

Until I figure out how to revamp this website or reorganize it a bit, I’ll just toss some incoming papers here.

The first is a paper by UT ICES postdoc Sanghyun Lee who got together with Jacqueline Reber to try to implement mechanics in their reservoir modeling that implements the “phase-field method”. We found that we could make a bit of progress on an old structural geology problem surrounding ‘wing-cracks’, and also at least conceptually relate the modeling approach to problems in Carbon Capture and Storage:

Lee, S., Reber, J.E., Hayman, N.W., Wheeler, M.F., 2016, Investigation of wing crack formation with a combined phase-field and experimental approach, Geophysical Research Letters, 43, 7946-7952, doi:10.1002/2016GL069979

The second is a paper by UT M.Sc. Nicole Hart who worked with Danny Stockli to apply U-Pb methods to a basin in France that I had been working on a bit:

Hart, N.R., Stockli, D.F., and Hayman, N.W., 2016, Provenance evolution during progressive rifting and hyperextension using bedrock and detrital zircon U-Pb geochronology, Mauleon Basin, western Pyrenees, Geosphere, doi:10.1130/GES01273.1

The UTIG semi-brittle deformation effort

Over the past few years Luc Lavier (UTIG), Jacqueline Reber (now at Iowa State) and I have been considering semi-brittle flow as pertains to both the geologic record and geophysically observed phenomena such as episodic-tremor-and-slip. We’ve been using a mix of geological observation, analytical solutions, and analog-materials experiments. In some ways this effort builds on my experimental work with Karen Daniels (North Carolina State University), also linked below:

Reber, J.E., Lavier, L.L., Hayman, N.W., 2015, Experimental demonstration of a semi-brittle origin for crustal strain transients, Nature Geosience, 8, 712-715, doi: 10.1038/NGEO2496.

Reber, J.E., Hayman, N.W., Lavier, L.L., 2014, Stick-slip and creep behavior in lubricated granular material: Insights into the brittle-ductile transition, Geophysical Research Letters, 41, doi: 10.1002/2014GL059832

Hayman, N.W., and Lavier, L.L., Geologic record of deep episodic tremor and creep, 2014, Geology, DOI: 1130/G34990.1.

Hayman, N.W., Ducloué, L., Foco, K.L., and Daniels, K.E.D., 2011, Granular controls on periodicity of stick-slip events: kinematics and force-chains in an experimental fault, Pure and Applied Geophysics, doi: 10.1007/s00024-011-0269-3.

Daniels, K.E., and Hayman, N.W., 2008. Force Chains in seismogenic faults visualized with photoelastic granular shear experiments, Journal of Geophysical Research, v. 113, B11411.

Death Valley detachments

My Ph.D. was looking at the detailed microstructure of detachment faults in Death Valley, California, supervised by Darrel Cowan (UW):

Hayman, N.W., 2006, Shallow-crustal fault rocks from the Black Mountains, CA. Journal of Structural Geology, 28, 1767-1784.

Hayman, N.W., Housen, B.A., Cladouhos, T.T., Livi, K., 2004, Magnetic and clast fabrics as measurements of grain-scale processes within the Death Valley shallow crustal detachment faults: Journal of Geophysical Research, v. 109, B05409.

Hayman, N.W., Knott, J., Cowan, D.S., Nemser, E., Sarna-Wojcicki, A.M., 2003, Quaternary low-angle slip on detachment faults in Death Valley, California: Geology, v.31, pp. 343-346.

Continental Extension & Rifting

Luc Lavier and I have been working with Petrobras (Brazil) for several years trying to understand the controls on margin development. This work is just starting to come out. A paper by Rodrigo Lima (Ph.D. candidate at UT) is in review (stay tuned!), and Anna Eliza Svartman Dias (Ph.D. completed in 2015 and now back at Petrobras, Brazil) just published her first modeling effort:

Svartman Dias, A. E., L. L. Lavier, and N. W. Hayman (2015), Conjugate rifted margins width and asymmetry: The interplay between lithospheric strength and thermomechanical processes, J. Geophys. Res. Solid Earth, 120, doi : 10.1002/2015JB012074.

Mid-Ocean Ridge Processes

For my postdoctoral research I worked with Jeff Karson (Syracuse University) to apply my thinking about fault rocks to structures observed in submarine rift walls that formed under fast-spreading mid-ocean ridges. During this time I also sailed on two IODP legs drilling oceanic crust, one in the Pacific, and one in the Atlantic; the latter was the oceanic core complex, the Atlantis Massif. On arriving at UTIG, I began to focus more on the Cayman Trough:

Cayman Trough: 

Hayman, N. W., N. R. Grindlay, M. R. Perfit, P. Mann, S. Leroy, and B. M. de Lépinay, 2011, Oceanic core complex development at the ultraslow spreading Mid-Cayman Spreading Center, Geochem. Geophys. Geosyst., 12, Q0AG02, doi:10.1029/2010GC003240.

IODP 312 (Superfast EPR-spread crust):

Veloso, E.E., Hayman, N.W., Anma, R., Tominaga, M., Gonzales, R.T., Yamazaki, T., Astudillo, N., 2013, Melt Flow Directions in the Sheeted Dike Complex at Superfast Spreading Mid-Ocean Ridges: Insights from IODP Hole 1256D, Eastern Pacific, Geochem. Geophys. Geosyst. doi: 10.1002/2013GC004957.

Hayman, N.W., Anma, R. and Veloso, E. 2009, Data Report: Microstructure of chilled margins in the sheeted dike complex of Integrated Ocean Drilling Program (IODP) Hole 1256D. In Teagle, D., Alt, J., Umino, S., Miyashita, S., Banerjee, N., Wilson, D. and the Expedition 309/312 Scientists, Proceedings of the IODP, 309/312: College Station, TX, USA.

Tectonic Windows & EPR-spread faults:

Barker, A. K., Coogan, L.A., Gillis, K.M., Hayman, N.W., Weis, D, 2010, Direct observation of a fossil high-temperature, fault-hosted, hydrothermal upflow zone in crust formed at the East Pacific Rise, Geology, 38, 379-382.

Hayman, N. W., and J. A. Karson, 2009, Crustal faults exposed in the Pito Deep Rift: Conduits for hydrothermal fluids on the southeast Pacific Rise, Geochem. Geophys. Geosyst., 10, Q02013.

Hayman, N.W., Karson, J.A., 2007, Faults and damage zones in fast-spread crust exposed on the north wall of the Hess Deep Rift: Conduits and seals in axial hydrothermal systems, Geochem. Geophys. Geosyst., 8, Q10002.

Expedition 304 (Atlantis Massif): 

Hirose, T., Hayman, N.W., 2008, Structure, permeability, and strength of a fault zone in the footwall of an oceanic core complex, the Central Dome of the Atlantis Massif, Mid-Atlantic Ridge, Journal of Structural Geology, 30, pp.1060-1071.

Convergent Margin Research

I started out geology under the tutelage of Bill Kidd and Win Means at SUNY Albany, mapping in the Champlain Valley of Vermont. Later I helped Eric Cheney (UW) in the Pacific Northwest to think about shortening around the arc. Later still, I sailed with Ryo Anma (Tsukuba University) to use the Shinkai to look at thrusts in the Nankai margin, and then on IODP Expedition 319 to drill below the Kumano forearc. This experience and research ultimately led to a program to link thrust tectonics to margin sedimentation, and the recent paper by Sebastian Ramirez.

NanTroSEIZE & Japan Margin Research:

Ramirez, S. G., S. P. S. Gulick, and N. W. Hayman, 2015, Early sedimentation and deformation in the Kumano forearc basin linked with Nankai accretionary prism evolution, southwest Japan, Geochem. Geophys. Geosyst., 16, 1616–1633, doi:10.1002/2014GC005643.

Hayman, N.W.; Byrne, T.; McNeill, L.; Kanagawa, K.; Kanamatsu, T.; Browne, C.M.; Schleicher, A.M.; Huftile, G., 2012, Structural evolution of the inner wedge and sub-forearc basin, Nankai margin, Japan. EPSL, 353-354, 163-172,

Hayman, N.W., Burmeister, K., Kawamura, K., Anma, R., and Yamada, Y., 2011, Oblique deformation in Tenryu Canyon of the Nankai accretionary prism, in Springer volume Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin, edited by Yujiro Ogawa.

Central Cascades Basins: 

Cheney, E.S., and Hayman, N.W., 2009, Cenozoic shortening of the central Cascade Range, Washington State, USA, GSA Bulletin, v.121, pp.1135-1153.

Vermont Taconics:

Hayman, N.W., and Kidd, W.S.F., 2002. Reactivation of prethrust, synconvergence normal faults within the Champlain-Taconic thrust system, west-central Vermont, U.S.A.: Geological Society of America Bulletin, v. 114, pp. 476-489.

Mudrock Research

Stay tuned!