In the Sawtooth Range of central Idaho. Idaho State University geology field camp, 2008.
Email: ryan.frazer at unc.edu
Office: Mitchell 224
B.A., Geology, Pomona College, 2009
M.S., Geological Sciences, University of North Carolina at Chapel Hill, 2012
Ph.D., Geological Sciences, University of North Carolina at Chapel Hill, current
I am a Master's student working with Drew Coleman on the Mount Givens Granodiorite of the central Sierra Nevada (see figure below). Using CA-ID-TIMS in the UNC Geochemistry Laboratory for U-Pb zircon geochronology and other isotope geochemistry, I am investigating possible similarities between this large, monotonous pluton and large volume (>500 km3) supereruptions such as the Fish Canyon Tuff.
I am currently a Teaching Assistant for GEOL 301: Earth Materials (Mineralogy) and also a Graduate Research Consultant (GRC) for GEOL 72H: Field Geology of Eastern California (see a blog post about the class here). In addition, I have been a GRC for GEOL 301: Earth Materials and a TA for GEOL 101L: Introductory Geology Laboratory. I have also worked in Allen Glazner's XRF/XRD lab developing procedures and standards for assessing a variety of samples of interest, including: igneous rocks from basalts to aplites; soil samples; clays and pottery.
See my Google Scholar page here.
Frazer, R.E., Lackey, J.S., Bindeman, I.N., Loewy, S.L., in prep., Age and origin of the Dinkey Dome granites: punctuated emplacement of the Shaver Intrusive Suite, central Sierra Nevada.
Lackey, J.S., Cecil, M.R., Windham, C.J., Frazer, R.E., Bindeman, I.N., Gehrels, G.E., 2012, The Fine Gold Intrusive Suite: The roles of basement terranes and magma source development in the Early Cretaceous Sierra Nevada batholith: Geosphere, v. 8, no. 2, p. 292-313. [link]
Mills, R.D., Coleman, D.S., Frazer, R.E., Glazner, A.F., Tappa, M.J., 2012, The general lack of igneous rocks with cumulate chemical signatures: is there an elephant in the room?: Abstract V43D-2893, presented at 2012 Fall Meeting, AGU, San Francisco, Calif., 3-9 Dec.
Frazer, R.E., Mills, R.D., Coleman, D.S., 2012, The contrasting age ranges of large plutons and monotonous intermediates: Geological Society of America Abstracts with Programs, v. 44, no. 7, p. 322. [link]
Beck, C.L., Bartley, J.M., Frazer, R.E., Coleman, D.S., Glazner, A.F., 2012, New insights into migration of the Cretaceous Sierran arc using high-precision U/Pb zircon geochronology: Geological Society of America Abstracts with Programs, v. 44, no. 7, p. 490. [link]
Frazer, R.E., Coleman, D.S., 2011, High-precision U-Pb CA-TIMS geochronology of the Mount Givens Granodiorite, central Sierra Nevada, California: insights into granodiorite emplacement, Abstract V21C-2507, presented at 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec. [link]
Beck, C.L., Frazer, R.E., Coleman, D.S., 2011, Evaluation of west-east migration in the Cretaceous Sierra Nevada batholith, Abstract V21D-2527, presented at 2011 Fall Meeting, AGU, San Francisco, Calif., 5-9 Dec. [link]
Lackey, J.S., Cecil, M.R., Windham, C.J., Frazer, R.E., Bindeman, I.N., Gehrels, G.E., 2010, Igniting the Sierran arc: evolving oxygen and hafnium isotope ratios in the Bass Lake Tonalite: Geological Society of America Abstracts with Programs, v. 42, no. 4, p. 110. [link]
Frazer, R.E., Lackey, J.S., Valencia, V.A., 2009, New U-Pb zircon ages of the granites of Dinkey Dome: reexamining the origins of the Shaver Intrusive Suite: Geological Society of America Abstracts with Programs, v. 41, no. 5, p. 14. [link]
General geologic map highlighting major intrusive groups in the central Sierra
Nevada, California. Inset shows study location; CA - California; LA - Los Angeles; SF
- San Francisco. Map after Bateman (1992), Cruden et al. (1999), Coleman et al.
(2004) and Lackey et al. (2008).