Emily M. Peterman

Associate Professor of Earth and Oceanographic Science

Teaching this semester

EOS 1105. Investigating Earth

Dynamic processes, such as earthquakes and volcanoes, shape the earth. Class lectures and exercises examine these processes from the framework of plate tectonics. Weekly field laboratories explore rocks exposed along the Maine coast. During the course, students complete a research project on Maine geology.

What processes control the evolution of mountain belts in time and space? What is the role of disequilibrium during metamorphism? How do micro- and nano-scale processes influence plate-tectonic-scale processes, such as collisional orogenesis and the exhumation of terranes? To address these questions, I use petrology, mineralogy, geochronology and geochemistry to quantify the timing and rates of metamorphic recrystallization, deformation, melting, and other aspects of crustal evolution. My research focuses on developing in situ techniques to measure pressure, temperature, and time, while retaining the petrologic context. Please visit our scanning electron microscope (SEM) site for additional information about current research and collaborations.

slide slide slide slide slide slide slide


  • Ph.D, University of California, Santa Barbara; Santa Barbara, CA, 2009
  • B.A., Geology and Spanish, Middlebury College; Middlebury, VT, 2004
  • Universidad SEK ; Segovia, Spain, 2003


Sullivan, W.A., and Peterman, E.M., 2017, Pulverized granite at the brittle-ductile transition: An example from the Kellyland fault zone, eastern Maine, U.S.A. Journal of Structural Geology, v. 101, p. 109–123. http://dx.doi.org/10.1016/j.jsg.2017.07.002

Peterman, E.M., Reddy, S.M, Saxey, D.W., Snoeyenbos, D.R., Rickard, W.D.A., Fougerouse, D., and Kylander-Clark, A.R.C., 2016, Nanogeochronology of discordant zircon measured by atom probe microscopy of Pb-enriched dislocation loops. Science Advances, v. 2, e:1601218, 9 pages. doi: 10.1126/sciadv.1601318

Peterman, E.M., Snoeyenbos, D.R., Jercinovic, M.J., and Kylander-Clark, A., 2016, Dissolution-reprecipitation metasomatism and growth of zircon within phosphatic garnet in metapelites from western Massachusetts. American Mineralogist, v. 101, p. 1792-1806.

Hacker, B.R., Kylander-Clark, A.R., Holder, R., Andersen, T.B., Peterman, E.M., Walsh, E.O., Munnikhuis, J., 2015, Monazite response to ultrahigh-pressure from U-Pb dating by laser ablation split stream, Chemical Geology, v. 409, p. 28-41.

Bisht, R.S., Law, R., Peterman, E., and Renson, V., 2015, Pb isotope analysis of lead, silver and copper artifacts from Dholavira, Heritage: Journal of Multidisciplinary Studies in Archaeology, v. 3, p. 1-18.

Peterman, E.M., Hourigan, J.K., and Grove, M., 2014, Experimental and geologic evaluation of monazite (U-Th)/He thermochronometry: Catnip Sill, Catalina Core Complex, Tucson, AZ., Earth and Planetary Science Letters, v.403, p. 48-55.

Peterman, E.M., Mattinson, J.M., and Hacker, B.R., 2012, Multi-step TIMS and CA-TIMS monazite U–Pb geochronology, Chemical Geology, v. 312-313, p. 58-73.

Peterman, E.M., and Grove, M., 2010, Growth conditions of symplectic muscovite + quartz: Implications for quantifying retrograde metamorphism in exhumed magmatic arcs, Geology, v. 38, no. 12, p. 1071-1074. doi: 10.1130/G31449.1

Hacker, B.R., Andersen, T.B., Johnston, S.M., Kylander-Clark, A.R.C., Peterman, E.M., Walsh, E.O., and Young, D.J., 2010, High-temperature deformation during continental-margin subduction & exhumation: The ultrahigh-pressure Western Gneiss Region of Norway, Tectonophysics, v.480, issue. 1-4, p 149-171. doi:10.1016/j.tecto.2009.08.012

Peterman, E.M., Hacker, B.R., and Baxter, E.F., 2009, Phase transformations of continental crust during subduction and exhumation: Western Gneiss Region, Norway, European Journal of Mineralogy; doi: 10.1127/0935-1221/2009/0021-1988.

West, D.P., Jr., and Peterman, E.M., 2004, Bedrock Geology of the Razorville 7.5' Quadrangle, Maine: Maine Geological Survey Map, Scale = 1:24,000 (Geologic Map and Explanation).

Conference Proceedings

Peterman, E.M., and Eusden, J.D. Jr., 2018, Monazite geochronology records early Acadian and NeoAcadian tectonometamorphic events in midcoast Maine. Northeast Meeting of the Geological Society of America, Burlington, Vermont.

Peterman, E.M., Jercinovic, M.J., and de Wet. C.B., 2017, Cathodoluminescence domains correlate with compositional zoning in kyanite. Geological Society of America Abstracts with Programs, Seattle, Washington.

Reddy, S., Saxey, D., Rickard, W., Fougerouse, D., Peterman, E., van Riessen, A., and Johnson, T., 2017, Nano is the next big thing: Revealing geochemical processes with atom probe microscopy, Geophysical Research Abstracts, Vol. 19, EGU2017-19280, 2017.

de Wet, C.M., Teeter, E.C., Peterman, E.M., and Beane, R.J., 2016, Optimizing cathodoluminescence imaging on the SEM, 2016, Geological Society of America Abstracts with Programs, vol. 48, no. 7., doi: 10.1130/abs/2016AM-285120

Peterman, E.M., Reddy, S., Saxey, D.W., Snoeyebos, D.R., Kylander-Clark, A., Rickard, W.D.A., and Fougerouse, D., 2016, Extracting geologic ages from isotopically distinct nanoscale reservoirs of Pb in discordant zircon by atom probe microscopy, Geological Society of America Abstracts with Programs, vol. 48, no. 7., doi: 10.1130/abs/2016AM-285451

Sullivan, W.A., and Peterman, E.M., A possible example of pulverized granite from the brittle-ductile transition, 2016, Geological Society of America Abstracts with Programs, vol. 48, no. 7., doi: 10.1130/abs/2016AM-283145

Reddy S.M., Peterman E.M., Saxey D.W., Rickard W.D.A., Fougerouse D., Snoeyenbos D.R. and

Kylander-Clark A.R.C., 2016, Atom probe analysis of discordant zircon reveals preserved 207Pb/206Pb crystallisation ages in nanoscale dislocation loops, Second Conference of the European Mineralogical Union; Rimini, Italy.

Rickard, W., Reddy, S., Saxey, D., Fougerouse, D., van Riessen, A., Peterman, E., 2016, Correlative Analysis using FIB-ToF-SIMS and Atom Probe Tomography on Geological Materials, Atom Probe Tomography & Microscopy; Gyeongju, South Korea.

Peterman, E.M. and Snoeyenbos, D.R., 2015, Atypical dissolution-reprecipitation reactions in zircon from HP/UHP metapelites, Geological Society of America Abstracts with Programs, vol. 47, no. 7, p.168.

Snoeyenbos, D.R. and Peterman, E.M., 2015, Phosphatic garnet from metapelitic schists of western Massachusetts and eastern Greece, Geological Society of America Abstracts with Programs, vol. 47, no. 7, p.168.

Peterman, E.M., Burton, Z.F.M., Rubel, J.N., Snoeyenbos, D.R. and Kylander-Clark, A., 2014, Monazite petrochronology via LASS characterizes 30 Myr of episodic retrograde metamorphism in western Massachusetts, AGU 2014 Fall Meeting.

Snoeyenbos, D.R., and Peterman, E.M., 2014, Solid state mass transfer reactions between zircon and garnet constrain an early Acadian UHP excursion in western Massachusetts, GAC-MAC Annual Meeting; Fredericton, New Brunswick, May 21–23, 2014.

*Peterman, E.M., Snoeyenbos, D.R. and Kylander-Clark, A., 2013, Early Acadian exhumation history of garnet-kyanite schists from western Massachusetts determined by LASS analysis of metamorphic monazite, EOS Transactions American Geophysical Union, AGU 2013 Fall Meeting, T38B-08.

Snoeyenbos, D.R., Peterman, E.M., Jercinovic, M.J., Williams, M.L., and Reinhard, D.A., 2013, Isotopic Tomography of Monazite, Mineralogical Magazine, v. 77, no. 5, p. 2231.

*Peterman, E.M., Snoeyenbos, D.R. and Kylander-Clark, A., 2013, Evidence of the Early Acadian in Western Massachusetts from high-pressure garnet-kyanite schist, Geological Society of America Abstracts with Programs, v. 45, no. 7, p. 239.

Peterman, E.M., 2013, Integrating field, geochemical and geophysical data in undergraduate courses to illustrate plate tectonics: Geological Society of America, Northeast Section Meeting, Abstract 215644.

Beane, R. J., Camill, P., Field, C., Laine, E., Lea, P.D., Peterman, E.M., Roesler. C., and Urquhart, J., 2013, Local research projects foster student learning in a growing undergraduate department: Geological Society of America, Northeast Section Meeting, Abstract 215499.

Peterman, E.M., Grove, M., and Hourigan, J.K., 2011, Development and intercalibration of monazite (U-Th)/ He thermochronology: Catnip Sill, Santa Catalina Mountains, Geological Society of America Abstracts with Programs, v. 43, no. 5, p. 331.

Peterman, E.M., Grove, M. and Kimbrough, D.L., 2010, Quantifying Continental Margin Deformation North and South of the Opening of the Gulf of California—Evidence for Subduction Erosion? EOS Transactions American Geophysical Union, AGU 2010 Fall Meeting, V41B-2288.

Peterman, E.M., Hourigan, J.K. and Grove, M., 2010, Laser heating of monazite to simultaneously determine He diffusion parameters and (U-Th)/He ages, Geological Society of America Abstracts with Programs, v. 42, no. 5.

Peterman, E.M. and Grove, M., 2010, Linking Temperature to Time in Retrograde Metamorphism: Ti-in-Quartz + Rb/Sr of Muscovite in preserved Ms + Qtz Symplectite, Geochimica et Cosmochimica Acta, v. 74, 11S1, A809.

Peterman, E.M. and Hourigan, J.K., 2009, Standard development for coupled (U-Th)/(Pb-He) chronology of monazite: EOS Transactions American Geophysical Union, AGU 2009 Fall Meeting, V41D-2205.

Peterman, E.M. and Grove, M. 2009, Significance of muscovite + quartz symplectites in anatectic wallrocks for evaluating background geothermal gradients in magmatic arcs: Geological Society of America Abstracts with Programs, v. 41, no. 7, p. 356.

Peterman, E.M. and Hacker, B.R., 2008, Phase transformations in subducting and exhuming continental crust: Insight from geochemical modeling: EOS Transactions American Geophysical Union, AGU 2008 Fall Meeting, T41B-1969.

Peterman, E.M., Mattinson, J.M., and Hacker, B.R., 2008, Chemical Abrasion Thermal Ionization Mass Spectrometry (CA-TIMS) Method Development for Monazite: Geological Society of America Abstracts with Programs, Abstract 222-12.

Peterman, E.M., Hacker, B.R. and Baxter, E.F., 2007, Sm–Nd Garnet geochronology demonstrates wholesale transformation of continental crust during UHP subduction—Western Gneiss Region, Norway: EOS Transactions American Geophysical Union, AGU 2007 Fall Meeting, V41C-0718.

Peterman, E., Hacker, B., Grove, M., Gehrels, G., and Mattinson, J., 2006, A Multi-Method Approach to Improving Monazite Geochronology: TIMS, LA-ICP-MS, SIMS and EPMA: EOS Transactions American Geophysical Union, AGU 2006 Fall Meeting, V21A-0551.

Peterman, E., Hacker, B., and Gehrels, G., 2005, Monazite standard assessment by LA-ICP-MS: Geological Society of America Abstracts with Programs, v.37, no. 7, p. 448.

* Denotes invited contribution

Denotes Bowdoin undergraduate

Research & Collaborations

National Science Foundation – Petrology and Geochemistry – 2017 – present

RUI: Collaborative Research: Preserving Evidence of Extreme Metamorphism in the Rhodope Metamorphic Complex (Greece & Bulgaria) with Dr. Michael Williams (UMass-Amherst)

We have completed a successful field season and are actively processing our samples from Summer 2017. Preparations are underway for Summer Institute 2018! Contact me if you're interested in applying to our program.

Compositional map of a specimen from Greece collected by P. Takata-Glushkoff '10 and M. Calentti '20.

Above: Compositional map of a specimen from Greece collected by P. Takata-Glushkoff and M. Calentti '20.

National Science Foundation – Major Research Instrumentation – 2015 – 2017

MRI: Acquisition of a Scanning Electron Microscope (SEM) with EDS, EBSD, and CL detectors to advance research and undergraduate research training

Peterman and Dr. Rachel Beane (Bowdoin) are the co-directors of this facility. Please visit our website for more information on current projects and collaborations.

Kokchetav Ky EBSD

Above: EBSD orientation map overlain on a ColorCL image of kyanite from Kokchetav

Below: A CL image of a zircon from Greece

Zircon Greece

Analytical Experience

Scanning Electron Microscope Lab; Bowdoin College
      Website for our new SEM

Cameca LEAP 4000x HR Atom Probe Microscope; Curtin University

Noble Gas Facility; Stanford University

Electron microprobe laboratory—JEOL 720; Stanford University

Scanning electron microscope laboratory; Stanford University

Helium Thermochronology Laboratory; UC Santa Cruz

Plasma Analytical Facility; UC Santa Cruz, 2009

Plasma Source Facility; UC Santa Barbara, 2009 

Thermal Ionization Mass Spectrometry—Finnigan MAT 261; UC Santa Barbara

SHRIMP-RG; Stanford University

Secondary Ion Mass Spectrometry—Cameca ims 1270

Electron Microprobe Laboratory—Cameca SX50 and SX100 UC Santa Barbara

Scanning Electron Microscope Lab; UC Santa Barbara

Thermal Ionization Mass Spectrometry—VG Sector 54; UC Santa Cruz

Thermo Finnigan Neptune MC-ICP-MS; UC Santa Cruz

Thermal Ionization Mass Spectrometry—Thermo Finnigan Triton; Boston University

Laser Ablation ICP-MS Lab—GV Isoprobe; University of Arizona, Tucson

High-temperature Lab; UC Santa Barbara