Calvin Miller
Ph.D. University of California, Los Angeles, 1977
Igneous Petrology and Tectonics;
magma chamber processes

office: 5719 Science & Engineering Bldg.
phone: 615-322-2232
email: calvin.f.miller@vanderbilt.edu

Vanderbilt faculty and their students are investigating magmas, magmatic processes, and their products from a wide range of perspectives.  In addition to Calvin Miller (see below),

•    Guil Gualda uses rock textures and mineral zoning among other methods to investigate the nature and behavior of magmas   in  chambers, studying for example the history of bubble growth and conditions leading to eruption.
•    David Furbish brings his expertise in fluid physics to bear upon issues of magma dynamics
•    John Ayers uses accessory minerals like zircon and monazite as both geochronometers and environmental monitors to  decipher the record of high-T fluids in Earth's crust

As a 5-year-old, I peered down into the volcano Haleakala in Hawaii and concluded ethusiastically that this was what I wanted to spend my life looking at and thinking about.  "This" broadened a bit, but I've spent the rest of my life peering curiously, at many scales, at the Earth's surface and the materials we find there, commonly at the products of magmatism.  Until recently, however, this peering was pretty much restricted to rocks that formed in the mid- to deep crust and to deep-seated processes that they reflected.   

But it was the view from a volcano that drew me in at age 5, and to an extent I've been completing the circle in the last few years.  Working at that time with students and colleagues on shallow, magnificently exposed intrusions that clearly vented to the surface, I became fascinated with the record of transport of magmas and magmatic products into, within, and out of chambers.  This in turn led to a lot of exciting exchange of ideas with people who have focused on the volcanic end of magmatic systems, especially those who are interested in the ways in which eruption processes and products reflect what goes in underlying chambers and even deeper.  The 2001 Penrose Conference on longevity and dynamics of rhyolitic magma systems in particular was an eye-opener that was followed by many subsequent opportunities for exchange of ideas, both formal and informal.

A wonderful year of leave in 2005-2006 came close to completing the circle.  I had the opportunity to visit volcanoes and spend time with volcanologists in Alaska, New Zealand, Ecuador, Antarctica, and Iceland.  It has become evident to me that integrating plutonic with volcanic perspectives on how magmatic systems work is an exciting frontier with opportunities waiting to be tapped in both research and teaching.  

I teach courses that deal with Earth materials, petrology, igneous geochemistry, geochronology, and magmatic processes in general.  Since the 2005-2006 year of leave mentioned above, I have developed or co-developed 3 new courses that I'm teaching this year (2007-2008):

EES 115W: VOLCANOES: Earth & Human Impacts (a first-year seminar)

EES 390: Volcanic Processes (for graduate students and upper-level undergrad majors)

CE/EES 299: The Proposed Deep Geologic Repository at Yucca Mountain (Environmental Science Capstone Course - required of all ES PhD students, open to MS students and advanced undergrads by permission)(co-taught with Jim Clarke, Environmental Engineering, and Jonathan Gilligan, EES)

My students and I aim at the following problems:
•    magma chambers: what are they? what are the materials like that reside in them?; how are materials transported into, within, and out of them?  how : nature, longevity, and dynamics of materials within them

•    volcano-pluton connections: what is the relationship between the processes and products at volcanoes and at plutons?

•    how do these processes determine when and whether a chamber erupts? How are eruptions reflected in the plutonic products of a magma chamber?

...using the following general strategies and methodologies:
•    field work in spectacularly exposed plutonic sections, also in modern and ancient volcanoes and volcanic deposits.  Currently, we are working in tilted crustal sections in southern Nevada where entire 10-15 km cross-sections of plutons and their erupted products are exposed, and at Mount St. Helens, where preliminary data indicate that modern eruptions are sampling a half-million year old system.

•    accessory minerals, especially zircon: imaging of zoning and elemental analysis of zones, U-Pb and U-series dating (by USGS/Stanford SHRIMP) - documenting dramatic fluctuations in chamber conditions, long-term storage and mixing of materials.

•    analog experiments to evaluate magma dynamics (transport and mechanical interactions of liquids and crystals) - masterminded by David Furbish

•    all supported by "classical" petrography and elemental and isotopic petrochemistry.

...and collaborations are absolutely critical! (all students interact and learn from researchers from other institutions, in other labs and field areas
•    at Vanderbilt, students and I work closely with David Furbish, Guil Gualda, and John Ayers

•    we also collaborate closely with Jonathan Miller (San Jose State University), a field-based petrologist and geochemist; geochemist/geochronologists Joe Wooden and Frank Mazdab of the USGS/Stanford SHRIMP lab; Jim Faulds of the Universiity of Nevada-Reno (structure-tectonics-field geology, volcanic sequences); and Mike Clynne and John Pallister, USGS volcanologists

•    and less formally with a host of USGS researchers and students and faculty at other institutions

My students have studied a wide range of problems in igneous and metamorphic petrology, mineralogy, and tectonics.  Currently, most address the sort of issues listed above.  Their work is almost invariably field-based and employs a variety of analytical techniques and experiments at Vanderbilt and other labs to address well-focused problems. The aim is both to produce fundamental research and to gain an understanding of research methods and problem-solving in general.   Many of my 40+ MS students have continued on for PhD's and into academia; others have pursued careers in environmental science, secondary education, law, and other fields.  Undergrads who have worked on research projects with me have gone into similarly diverse fields.  My first student in our new PhD program, Lily Claiborne, is aiming at a career in higher education.

Current students

Lily Claiborne (PhD) is using zircon to track the evolution of the Mt. St. Helens magmatic system (the first zircon work to be carried out at that volcano).  She has demonstrated that many of the zircons in erupting magmas had been stored beneath the volcano for more than 100,000 years prior to eruption.  She is also investigating magma processes by which plutons are constructed and melt segregation within plutonic environments.  For her MS at Vanderbilt, she studied the origin of very felsic granites (equivalent of high-silica rhyolites) in the Spirit Mountain batholith in Nevada and carried out a detailed studied of zircon zoning within the batholith.  

Tenley Banik (MS) is working both in a young Icelandic volcanic sequence and on magmatic structures in Aztec Wash pluton in Nevada.  She is investigating the mechanical behavior of basaltic magma when it encounters particle-laden slurries -  both lavas in wet sediments and mafic injections into crystal-rich magma chambers.

Ashley Bromley (Senior Honors thesis) is investigating whether, and how, mafic and felsic magmas chemically mix, using the Aztec Wash pluton in Nevada as an example.  She is using zircon zoning and elemental composition as a tracker of fluctuating environmental conditions where basaltic and granitic magmas meet.   

Large Silicic Magma Systems,  S. deSilva, O. Bachmann, C. Miller, T. Yoshida, & K. Knesel, eds. (Journal of Volcanology and Geothermal and Geothermal Research, in press, fall 2007)

Supervolcanoes: Explosive super-eruptions and the magmas that feed them, C.F. Miller & D.A. Wark, editors (Elements, in prep for Jan. 2008)

2005 Daly Lecturer, AGU (annual Volcanology, Geochemistry, Petrology lecture): Transport, deposition, storage, and remobilization of felsic magmas and their products in the upper crust

2006 Award for Excellence in Graduate Teaching of the College of Arts & Science, Vanderbilt University

2007 keynote address on volcano-pluton connections, International Union of Geodesy and Geophysics, Perugia, Italy: The Miocene volcano-plutonic suite of the northern Colorado River Corridor, Nevada-Arizona, USA

(PI) NSF-EAR- 0635922, Volcanic-plutonic evolution evaluated using zircon growth histories at Mt. St. Helens volcano, 2007-2010

(Miller PI; David Furbish, co-PI) NSF EAR- 0409876, Collaborative Research: Elucidating Physical Processes in Upper Crustal Magma Systems - Evidence from Miocene Intrusive and Extrusive Sequences in Southern Nevada, (lead proposal; with San Jose State Univ., Univ. Nevada), 2004-2009

(John Ayers, PI; Miller co-PI) NSF EAR-0510092, Zr-Mineral Aqueous Solubilities and Zircon/(Fluid-Melt) Partitioning, 2005-2008

Recent Papers, 2000-Present (NOTE: * denotes student author):

*Townsend, K.T., C.F. Miller, J.L. *D'Andrea, J.C. Ayers, T.M. Harrison, and C.D. Coath, 2000, Low temperature replacement of monazite in the Ireteba granite, southern Nevada: Geochronological implications: Chemical Geology 172: 95-112.

Miller, C.F., R.D. Hatcher, J.C. Ayers, C.D. Coath, and T.M. Harrison, 2000, Age and zircon  inheritance of eastern Blue Ridge plutons, southwestern North Carolina and northeastern Georgia with implications for magma history and evolution of the southern Appalachian orogen: American Journal of Science 300: 142-172.

*Bachl, C.A., C.F. Miller, J.S. Miller, and J.E. Faulds, 2001, Construction of a pluton: Evidence from an exposed cross-section of the Searchlight pluton, Eldorado Mountains, Nevada: Geological Society of America Bulletin 113: 1213-1228.

Faulds, J.E., Feuerbach, D.L., Miller, C.F., and Smith, E.I., 2001, Cenozoic evolution of the northern Colorado River extensional corridor, southern Nevada and northwest Arizona: Utah Geological Association Publication 30 -Pacific Section American Association of Petroleum Geologists Publication GB78: 239-271.

Miller, C.F., and J.S. Miller, 2002, Contrasting stratified plutons exposed in tilt blocks, Eldorado Mountains, Colorado River rift, Nevada, USA: Lithos, v. 61, p. 209-224.

Ayers, J.C., Dunkle, S., Gao, S., and Miller, C.F., 2002, Constraints on timing of peak and retrograde metamorphism in the Dabie Shan ultrahigh-pressure metamorphic belt, east-central China, using U-Th-Pb dating of zircon and monazite: Chemical Geology, v. 186, p. 315-331.

*Kapp, J.L , C.F. Miller, and J.S. Miller, 2002, Ireteba pluton, Eldorado Mountains, Nevada: Late, deep-source, peraluminous magmatism in the Cordilleran Interior: Journal of Geology, v. 110, p. 649-669.

*Meschter McDowell, S., C.F. Miller, P.D. Fullagar, *B.R. Bream, and *R.W. Mapes, 2002, The Persimmon Creek Gneiss, Eastern Blue Ridge, North Carolina-Georgia: Evidence for the missing Taconic arc?: Southeastern Geology, v. 41, p. 103-117.

*C.W. Carrigan, C.F. Miller, P.D. Fullagar, R.D. Hatcher, Jr., B.R. *Bream, and C.D. Coath, 2003, Ion microprobe age and geochemistry of southern Appalachian basement, with implications for Proterozoic and Paleozoic reconstructions: Precambrian Research, v. 120, p. 1-36.

Ayers J.C., DeLaCruz K., Miller C.F., Switzer O., 2003, Experimental study of the growth kinetics of zircon in quartzite ± H2O at 1.0 GPa and 1000°C, with implications for geochronological studies of high-grade metamorphism: American Mineralogist, v. 88, p. 365-376.

Miller, C.F., S.M. *McDowell, and R.W.*Mapes, 2003, Hot and cold granites?: Implications of zircon saturation temperatures and preservation of inheritance: Geology, v. 31, p. 529-532.

*Ownby, S.E., Miller, C.F., *Berquist, P.J., *Carrigan, C.W., and Fullagar, P.D., 2004, Geochemistry and U-Pb geochronology of a portion of the Mars Hill Terrane, North Carolina-Tennessee: constraints on origin, history, and tectonic assembly: in Tollo, R.P., Corriveau, L., McLelland, J., and Bartholomew, M.J., (eds.), Proterozoic Evolution of the Grenville Orogen in North America: Geological Society of America Memoir 197, p. 609-632.
 
*Bream, B.R., Hatcher, R.D., Jr., Miller, C.F., and Fullagar, P.D., 2004, Detrital zircon ages and Nd isotopic data from the southern Appalachian crystalline core, GA-SC-NC-TN: New provenance constraints for Laurentian margin paragneisses: in Tollo, R.P., Corriveau, L., McLelland, J., and Bartholomew, M.J., (eds.), Proterozoic Evolution of the Grenville Orogen in North America: Geological Society of America Memoir 197, p. 459-476.

Hatcher, R.D., Jr., *Bream, B.R., Miller, C.F., Eckert, J.O., Jr., Fullagar, P.D., and *Carrigan, C.W., 2004, Paleozoic structure of southern Appalachian Blue Ridge Grenvillian internal basement massifs: in Tollo, R.P., Corriveau, L., McLelland, J., and Bartholomew, M.J., (eds.), Proterozoic Evolution of the Grenville Orogen in North America: Geological Society of America Memoir 197, p. 525-548.

Bryant, D.L., Ayers, J.C., Gao, S., Miller, C.F., and Zhang, H., 2004, Geochemical, age, and isotopic constraints on the location of the Sino-Korean/Yangtze Suture and evolution of the northern Dabie Complex, east central China: Geological Society of America Bulletin: Geological Society of America Bulletin 116: 698-717.

Moecher, D.P., Samson, S., and Miller, C.F., 2004, Precise time and conditions of peak Taconian granulite facies metamorphism in the southern Appalachian orogen, U.S.A., with implications for zircon behavior during melting: Jour. Geology 112: 289-304.

*Harper, B.E., Miller, C.F., *Koteas, G.C., *Cates, N.L., Wiebe, R.A., Lazzareschi, D.S., and Cribb, J.W., 2004, Granites, dynamic magma chamber processes, and pluton construction: Aztec Wash pluton, Eldorado Mountains, Nevada, USA: Trans. Roy. Soc. Edinburgh:  Earth Sciences 95, 277-296 (Hutton Symposium volume).(also published in 2005, Geological Society of America, Special Paper 389, 277-295).

Ayers, J.C., Loflin, M., Miller, C.F., Barton, M.D., and Coath, C., 2006, In-situ oxygen isotope analysis of monazite as a monitor of fluid infiltration during contact metamorphism: Birch Creek pluton aureole, White Mountains, eastern California: Geology 34: 653-656.

*Claiborne, L.E., Miller, C.F., *Walker, B.A., Wooden, J.L., Mazdab, F.K., and Bea, F., 2006, Tracking magmatic processes through Zr/Hf ratios in rocks and Hf and Ti zoning in zircons: An example from the Spirit Mountain batholith, Nevada: Mineralogical Magazine 70: 517-543.

*Walker, B.A. Jr., Miller, C.F., * Claiborne, L.E., Wooden, J.L., and Miller, J.S., in press, Geology and geochronology of the Spirit Mountain batholith, southern Nevada:  implications for timescales and physical processes of batholith construction: Journal of Volcanological and Geothermal Research.

McClellan, E.A., Steltenpohl, M.G., *Thomas, C.W., and Miller, C.F., in press, Isotopic age constraints and metamorphic history of the Talladega belt: New evidence for timing of arc magmatism and terrane emplacement along the southern Laurentian margin: Journal of Geology.

Bachmann, O., Miller, C.F., and de Silva, S.L., in press, The volcanic-plutonic connection as a stage for understanding crustal magmatism: Jour. Volcanology and Geothermal Res.

Miller, J.S., Matzel, J.E.P., Miller, C.F., Burgess, S.D., Miller, R.B., in press, Zircon growth and recycling during the assembly of large, composite arc plutons: Jour. Volcanology and Geothermal Res.

Meeting presentations by student advisees, 2005-present:

*Bleick, H.A., Miller, C.F., Furbish, D.J., *Koteas, C., Ericksen, S.M., Miller, J.S., Gualda, G., and *Walker, B.A., 2005, Production and distribution of hybridized magma in a replenished, open-system magma chamber: Aztec Wash pluton, Eldorado Mountains, Nevada: Geol. Soc. America, abst. with prog. 37(4): p. 66.

*Walker, B.A., Miller, C.F., *George, B.E., Ludington, S., Wooden, J.L., *Bleick, H.A., and Miller, J.S., 2005, The Spirit Mountain batholith: Documenting magma storage in the upper crust one pulse at a time: Transactions of the American Geophysical Union, Spring Meeting, EOS, v. 86, JA516.

*George, B.E., Miller, C.F., *Walker, B.A., and Wooden, J.L., 2005, Newberry Mountains dike swarm, southern Nevada: Final, extension-related pulse of the Spirit Mountain batholith: Transactions of the American Geophysical Union, Spring Meeting, EOS, v. 86, JA511.

Miller, C.F., *Lowery, L.E., and Bea, F., 2005, Zircon and Zr/Hf ratios: Assessing magmatic fractionation in the crust: V.M. Goldschmidt Conference Program with Abstracts. [presented by Lowery]

*Perrault, Daniel S., Miller, Calvin F., *Fisher, Christopher M., Furbish, David J., Miller, Jonathan S., and Faulds, James E., 2005, Giant country rock blocks within the Searchlight pluton, southern Nevada: Geol. Soc. America abstr with prog, 37(7), p. 309.

*Fisher, C.M., Miller, C.F., *Berquist, P.J., Loewy, S.L., Fullagar, P.D., and Hatcher, R.J., Jr., 2005, Gondwana in Appalachia?: Isotopic Evidence for exotic basement in the southeastern USA, in Gondwana 12; Geological and Biological Heritage of Gondwana, p. 156.

*Fisher, C.M., Loewy, S.L., *Berquist, P.J, Miller, C.F., Hatcher, R.J., Jr., Van Schmus, W.R., Fullagar, P.D., and Wooden, J.L, 2006, An exotic Blue Ridge basement: new isotopic evidence: Geol. Soc. America, abst. with prog. 38(3): p. 62.

*Lowery, L.E., Miller, C.F., Wooden, J.L., Mazdab, F.K., and Bea, F., 2006, Hf and Ti zoning in zircons: detailed records of magmatic processes, Geophysical research abstracts, European Geosciences Union General Assembly 8 (abstract A-01258)(Vienna, Austria).

*Hodge, K., Miller, C., Miller, J., and Faulds, J., 2006, Dike emplacement at the Searchlight, Nevada, volcano-plutonic complex: Geol. Soc. America, abst. with prog. 38(5): p. 95.

*Perrault, Daniel S., Furbish David J., Miller, Calvin F., 2006, Transport and Depositional Model for Large Country Rock Blocks within the Searchlight Pluton, Southern Nevada: Transactions of the American Geophysical Union, Spring Meeting, EOS (V41A-16).

*Claiborne, L L, Furbish, D J, Miller, C F, 2006, Determining Mechanics of Segregating Small Crystals from Melt Using Modeling and SHRIMP-RG Trace Element Analysis of Zircons: Application to the Spirit Mountain Batholith, Nevada, Transactions of the American Geophysical Union, Fall  Meeting, EOS (V54B-02).

*Claiborne, LL, Clynne, MA., Pallister, JS, Miller, CF, Wooden, JL, Mazdab, FK, Lowenstern, JB, 2007, Investigating the evolution of the Mount St. Helens plumbing system using SHRIMP-RG U-Pb, U-series, and trace element analysis of zircon, International Union of Geodesy & Geophysics XXIV General Assembly Abstracts, Perugia, Italy.


Other Selected Papers, 1980-2000:

Miller, C.F., and L.J. Bradfish, 1980, An inner Cordilleran belt of muscovite-bearing plutons:  Geology, v. 8, p. 412-416.

Miller, C.F., and E.F. Stoddard, 1981, The role of manganese in the paragenesis of magmatic garnet:  an example from the Old Woman-Piute Range, California:  Jour. Geol., v. 89, p. 233-246.

Miller, C.F., E.F. Stoddard, L.J. Bradfish and W.A. Dollase, 1981, Composition of plutonic muscovite:  genetic implications:  Canad. Mineralogist, v. 19, p. 25-34.

Miller, C.F., and D.W. Mittlefehldt, 1982, Depletion of light rare-earth elements in felsic magmas:  Geology, v. 10, p. 129-133.

Mittlefehldt, D.W., and C.F. Miller, 1983, Geochemistry of Sweetwater Wash pluton, California: implications for 'anomalous' trace element behavior during differentiation of felsic magmas:  Geochim. Cosmochim. Acta, v. 47, p. 109-124.

Miller, C.F., and D.W. Mittlefehldt, 1984, Extreme fractionation in felsic magma chambers: a product of liquid-state diffusion or fractional crystallization?: Earth Plan. Sci. Letters, v. 68, p. 151-158.

Miller, C.F., 1985, Are strongly peraluminous magmas derived from mature sedimentary (pelitic) sources?:  Jour. Geology, v. 93, p. 673-689.

Miller, C.F., E.B. Watson, and T.M. Harrison, 1988, Perspectives on the source, segregation, and transport of granitoid magmas:  Transactions of the Royal Society of Edinburgh, v. 79, p. 135-156.

Miller, C.F. and M.D. Barton, 1990, Phanerozoic plutonism in the Cordilleran interior, western USA: in Kay, S.M., and C.W. Rapela (eds.), Plutonism from Antarctica to Alaska, Geol. Soc. America Special Paper 241, p. 213-231.

*Miller, J.S., and C.F. Miller, 1991, Tertiary extension-related volcanism, Old Woman Mountains area, eastern Mojave Desert, California:  Jour. Geophys. Res., v. 96, p. 13629-13643.

*Carl, B.S., C.F. Miller, and D.A. Foster, 1991, Western Old Woman Mountains shear zone: evidence for late ductile extension in the Cordilleran orogenic belt:  Geology, v. 19, p. 893-896.

Rapp, R.P., E.B. Watson, and C.F. Miller, 1991, Partial melting of amphibolite/eclogite and the origin of Archean trondhjemites and tonalites:  Precambrian Res., v. 51, p. 1-25.

Miller, C.F., *J.M. Hanchar, V.C. Bennett, T.M. Harrison, D.A. Wark, and *D.A. Foster, 1992, Source region of a batholith: evidence from lower crustal xenoliths and inherited accessory minerals:  Trans. Roy. Soc. Edinburgh:  Earth Sciences (Hutton Symposium volume), v. 53, p. 49-62.

*Foster, D.A., C.F. Miller, T.M. Harrison, and T.D. Hoisch, 1992, 40Ar/39Ar thermochronology and thermobarometry of metamorphism, plutonism, and tectonic denudation in the Old Woman Mountains area, California:  Geol. Soc. America Bull., v. 104, p. 176-191.

*Hanchar, J.M., and C.F. Miller, 1993, Zircon zonation patterns and interpretation of crustal histories , Chemical Geology, v. 110, p. 1-13.

*Kingsbury, J.A., C.F. Miller, J.L. Wooden, and T.M. Harrison, 1993, Utility of monazite in geochronology: examples from the Old Woman-Piute Mountains, southeastern California: Chemical Geology, v. 110, p. 147-167.

Karlstrom, K.E., C.F. Miller, J.A. Kingsbury, and J.L. Wooden, 1993, Pluton emplacement along an active ductile thrust zone, Piute Mountains, California: interaction between deformational and solidification processes: Geol. Soc. Am. Bull., v. 105, p. 213-230.

*Gleason, J.D., Miller, C.F., Wooden, J.L., and Bennett, V.C., 1994, Petrogenesis of the highly potassic 1.42 Ga Barrel Spring pluton, southeastern California,  with implications for mid-Proterozoic magma genesis in the southwestern USA: Contrib. Mineral. Petrol., v. 118, p. 182-197.

*Hanchar, J.M., Miller, C.F., Wooden, J.L., Bennett, V.C., and Staude, J.-M., 1994, Evidence from xenoliths for a dynamic lower crust, eastern Mojave Desert, California:  Jour. Petrol., v. 35, p. 1377-1415.

Hook, S.J., Karlstrom, K.E., Miller, C.F., and McCaffrey, K.J.W., 1994, Mapping the Piute Mountains, CA, with thermal infrared multispectral scanners (TIMS).  J. Geophys. Res., v. 99, p. 15,605-15,622.

Miller, C.F., and J.L. Wooden, 1994, Anatexis, hybridization, and the modification of ancient crust: Mesozoic plutonism in the Old Woman Mountains area, California: Lithos, v. 32, p. 111-133.

*Falkner, C.M., Miller, C.F., Wooden, J.L., and Heizler, M.T., 1995, Petrogenesis and tectonic significance of the calc-alkaline, bimodal Aztec Wash pluton, Eldorado Mountains, Colorado River extensional corridor: Jour. Geophys. Res., v. 100, p. 10,453-10,476.

*Gerber, M.E., Miller, C.F., and Wooden, J.L., 1995, Plutonism at the eastern edge of the Cordilleran Jurassic magmatic belt, Mojave Desert, California: Chapter 17 in Miller D.M., and Busby, K., eds., Jurassic magmatism and tectonism in the Cordillera, Geol. Soc. Amer. Special Paper 299, p. 351-374.

*Patrick, D.W., and C.F. Miller, 1997, Processes in a composite, recharging magma chamber: evidence from magmatic structures in the Aztec Wash pluton, Nevada: Proc. 30th Int’l. Geol. Congr. (Research Volume), p. 121-135.

Miller, C.F., R.D. Hatcher, Jr. T.M. Harrison, C. Coath, and E.B. *Gorisch, 1998, Cryptic crustal events elucidated through zone imaging and ion microprobe studies of zircon, southern Appalachian Blue Ridge, North Carolina-Georgia: Geology, v. 26, p. 419-422.

Miller, J.S., Heizler, M.T., and Miller, C.F., 1998, Timing of magmatism, basin formation, and tilting at the west edge of the Colorado River extensional corridor: results from single crystal 40Ar/39Ar geochronology of Tertiary rocks in the Old Woman Mountains area, southeastern California: Journal of Geology, v. 106, p. 195-209.

McCaffrey, K.J.W., Miller, C.F., Karlstrom, K.E., and Simpson, C., 1999, Synmagmatic deformation patterns in the Old Woman Mountains, SE California: Journal of Structural Geology, v. 21, p. 335-349.

*Robinson, D.M., and C.F. Miller, 1999, Record of magma chamber processes preserved in accessory mineral assemblages: American Mineralogist 84: 1346-1353.