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Susan L. Halgedahl
Associate Professor
Contact: Office: WBB Room 603
Phone: (801) 585-3963
s.halgedahl@utah.edu
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FIELD OF STUDY
Rock Magnetism
BACKGROUND
- B.S., Applied Physics, 1975, University of California at San Diego (UCSD)
- Ph.D., Geological Sciences, 1981, University of California at Santa Barbara (UCSB)
- Elected Fellow of the American Geophysical Union for seminal work in rock magnetism.
RESEARCH INTERESTS & PROJECTS
Rock magnetism.
Exceptional preservation of fossils and its relation to sequence stratigraphy.
RECENT PUBLICATIONS
Halgedahl, S., and M. Fuller, Magnetic domain observations of nucleation processes in fine particles of intermediate titanomagnetite, Nature, v. 288(6), 70-72, 1980.
Halgedahl, S.L., and M. Fuller, The dependence of magnetic domain structure upon magnetizaton state in polycrystalline pyrrhotite, Phys. Earth Planet. Int., v.26, 93-97, 1981.
Halgedahl, S., and M. Fuller, The dependence of magnetic domain structure upon magnetization state with emphasis upon nucleation as a mechanism for pseudosingle-domain behavior, J. Geophys. Res., v.88, 6506-6522, 1983.
Halgedahl, S.L., Bitter Patterns versus hysteresis behavior in small single particles of hematite, J. Geophys. Res., v.100, B1, 353-364, 1995.
Halgedahl, S.L., and R.D. Jarrard, Low-temperature behavior of single domain through multidomain magnetite, Earth Planet. Sci. Lett., v. 130, 127-139 1995.
Suk, D., and S.L. Halgedahl, Hysteresis properties of magnetic spherules versus whole-rock specimens from some Paleozoic platform carbonates, J. Geophy. Res., v.101, B11, 25,053-25,0075, 1996.
Halgedahl, S.L., Revisiting the Lowrie-Fuller test, Earth Planet. Sci. Lett., v. 160, 257-271, 1998.
Halgedahl, S.L., Barkhausen jumps in large versus small platelets of natural hematite, J. Geophys. Res.,v. 103, B12, 30,575-30,589, 1998
Halgedahl, S.L., and J. Ye, Observed effects of mechanical grain-size reduction on the domain structure of pyrrhotite, Earth Planet. Sci. Lett., v. 176, 457-467, 1999.
Ye, J., and S.L. Halgedahl, Theoretical effects of mechanical grain-size reduction on GEM domain states in pyrrhotite, Earth Planet. Sci. Lett., v. 178, 73-85, 2000.
Briggs, D.E.G., Lieberman, B.S., Halgedahl, S.L. and R.D. Jarrard, A new metazoan from the middle Cambrian of Utah and the nature of the Vetulicolia, Palaeontology, v. 48, part 4, 681-686, 2005.
Halgedahl, S. L., MAGNETIC DOMAINS, invited article in Encyclopedia of Geomagnetism and Paleomagnetism, Springer-Verlag-Kluwer, in press, 2006.
Handwerger, D. A. and S. L. Halgedahl, Calculated effects of grain-size distributions on the hysteresis parameters of glass-ceramic magnetite, Geochemistry, Geophysics, and Geosystems, in review, 2006.
Briggs, D.E.G., Lieberman, B.S., Hendricks, J. R., Halgedahl, S.L. and R.D. Jarrard, Middle Cambrian arthropods from Utah, Journal of Paleontology, in review, 2006.
Halgedahl, S.L., Jarrard, R.D., Allison, P.A. and C.E. Brett, Geophysical proxies of sea level change in the Upper Wheeler Formation, Drum Mountains, west-central Utah: A perspective into exceptional preservation of fossils, Palaeogeography, Palaeoclimatology, Palaeoecology, in review, 2006.
