Publications
recent
This is a list
of recent publications by members of the group. This list is
chronological by year with each year sorted alphabetically. The years
before 1998 are available here.
Most titles are hyperlinked to adobe acrobat files. Adobe acrobat is
available here.
2008
Spera, F.J., Fowler, S.J. (in Press, 2008), Conceptual Model For Small-Volume Alkali Basalt Petrogenesis: Implications For Volcanic Hazards At The Proposed Yucca Mountain Nuclear Waste Repository, in (editors) Connor, C. B., Chapman, N. A., Connor, L. J., Volcanic and Tectonic Hazard Assessment for Nuclear Facilities, Cambridge University Press, Cambridge, UK.
Sarah J. Fowler and Frank J. Spera, Phase equilibria trigger for explosive volcanic eruptions, GEOPHYSICAL RESEARCH LETTERS, VOL. 35, L08309, doi:10.1029/2008GL033665, 2008.
Pertermann, M., A.G. Whittington, A.M. Hofmeister, F. J. Spera and J. Zayak (2007), "Transport properties of low-sanidine single-crystals, glasses and melts at high temperature" Contributions to Mineralogy and Petrology, 155:689-702, DOI 10.1007/s00410-007 0265-x (2008) .
2007
D. Nevins, F.J. Spera, , (2007), "Accurate computation of shear viscosity from equilibrium molecular dynamics simulations" Molecular Simulation, Volume 33, Issue 15 December 2007 , pages 1261 - 1266.
F.J. Spera, Bohrson, W. A., Till, C.B., Ghiorso, M.S., (2007), "Partitioning of trace elements among coexisting crystals, melt, and supercritial fluid during isobaric crystallization and melting" American Mineralogist, Vol 92, pages 1881-1898 .
Bohrson, W. A., and F. J. Spera (2007),
Energy-Constrained echarge, Assimilation, and
Fractional Crystallization (EC-RA/É'/FC): A
Visual Basic computer code for calculating trace
element and isotope variations of open-system
magmatic systems, Geochem. Geophys. Geosyst., 8,
Q11003, doi:10.1029/2007GC001781 (PDF file).
Bohrson, W. A., and F. J. Spera (2007),
Energy-Constrained echarge, Assimilation, and
Fractional Crystallization (EC-RA/É'/FC): A
Visual Basic computer code for calculating trace
element and isotope variations of open-system
magmatic systems, Geochem. Geophys. Geosyst., 8,
Q11003, doi:10.1029/2007GC001781 (XLS file).
Fowler,
Sarah J., Spera, Frank J., Bohrson, Wendy A., Belkin, Harvey,
De Vivo, Benedetto, "Phase Equilibria Constraints on the Chemical
and Physical
Evolution of the Campanian Ignimbrite" , Journal of Petrology, vol 48, num 3, pages 459-493 (2007) doi:10.1093 /petrology/ egl068.
2006
White,
Scott M.,
Crisp, Joy A., Spera, Frank J.,"Long-Term Volumetric Eruption
Rates and Magma Budgets",Geochemistry, Geophysics, Geosystems, vol 7, num1, doi:10.1029/2005GC001002. 2006.
F.J. Spera, Yuen, D.A., Giles, G., "Tradeoffs inchemical and thermal variations in the post-perovskite
phase transistion: Mixed phase regions in the Deep Lower Mantle?
Physics of the Earth and Planetary Interiors, 159 (2006) 234-246, doi:10.1016/j.pepi.2006.07.007.
2005
Bohrson, W. A., Spera, F. J., Fowler, S. J., Belkin, H. E., De Vivo, B. & Rolandi, G. (2006). Petrogenesis of the Campanian Ignimbrite:
implications for crystal-melt separation and open-system processes
from major and trace elements and Th isotopic data. In: De Vivo, B.
(ed.) Volcanism in the Campania Plain: Vesuvius, Campi Flegrei and
Ignimbrites. Developments in Volcanology 9, pp. 249-288.
2004
Fowler,
S., Bohrson,W., and F.J. Spera, Magmatic Evolution of the Skye
Igneous Centre, Western Scotland: Modelling of Assimilation,
Recharge and Fractional Crystallization. Journal of Petrology,
vol.45, no.12, pp.2481-2505, Dec 2004.
Spera, F.J., and Bohrson,W. (2004) Open-System Magma Chamber Evolution: an Energy-constrained
Geochemical Model Incorporating the Effects
of Concurrent Eruption, Recharge, Variable Assimilation and Fractional
Crystallization . Journal of Petrology, vol.45, no.12,
pp.2459-2480,
2003
Schoofs,
S., and F.J. Spera, Transition to chaos and flow dynamics in
thermochemical convection in porous media, Transport in Porous
Media, 50, 179-195, 2003.
2002
Spera,
F. J., Bohrson, W. A.,Energy-Constrained Open-System Magmatic
Processes III:
Energy-Constrained Recharge, Assimilation and Fractional
Crystallization (EC-RAFC). Geochemistry, Geophysics, Geosystems, 2002.
2001
Graham,
E. W., et al., Upper-mantle dynamics revealed by helium isotope
variations along the southeast Indian ridge. Nature, v. 409,
p. 701-703.
Bohrson,
W. A., Spera, F. J., Energy-Constrained Open-System Magmatic
Processes II: Application of Energy-Constrained Assimilation-Fractional
Crystallization (EC-AFC) Model to Magmatic Systems. Journal
of Petrology, v. 42, p. 1019-1041.
Figures: Figure1 All
Other Figures
Spera,
F. J., Bohrson, W. A., Energy-Constrained Open-System Magmatic
Processes I: General Model and Energy-Constrained Assimilation
and Fractional Crystallization (EC-AFC) Formulation. Journal
of Petrology, v. 42, p. 999-1018.
Figures: Figure1 All
Other Figures
Stein,
D. J., Spera, F. J., Shear Viscosity of Rhyolite-Vapor Emulsions
at Magmatic Termperatures by Concentric Cylinder Rheometry. Journal
of Volcanological & Geothermal Research, v.113, p.243-258.
(2001).
De Vivo, B., et al., New constraints on the pyroclastic eruptive history of
the Campanian volcanic Plain (Italy). Mineralogy and Petrology, v.73,
p47- 65, (2001).
Morgan,
N. A., Spera, F. J., A molecular dynamics study of the glass
transition in Ca Al2Si2O8: Thermodynamics and tracer diffusion.
American Mineralogist, vol 86, 915-926 (2001).
Morgan,
N. A., Spera, F. J., The Glass Transition, Structural Relaxation
and Theories of Viscosity: A Molecular Dynamics Study of Amorphous
CaAl2Si2O8. Geochimica et Cosmochimica Acta, v.65, p.4019 - 4041,
2001.
2000
Spera,
F. J., Stein, D. J., Comment on "Rheology of bubble-bearing
magmas" by Lejeune et al. Earth and Planetary Science Letters,
v. 175, p. 327-331.
Spera, F. J., Physical Properties of Magma. In: Encyclopedia of Volcanoes,
H. Sigurdsson, Ed. (Academic Press, New York, 2000), p. 171-190.
1999
Bryce, J. G., Spera,
F. J., Stein, D. J., Pressure dependence of self-diffusion in the
NaAlO2-SiO2 system: Compositional effects and mechanisms. American
Mineralogist, v. 84, p. 345-356.
Spera, F. J., A Slippery Problem with Explosive Consequences. Science, v. 283,
p. 1275-1276.
Schoofs, S., Spera, F.
J., Hansen, U., Chaotic thermohaline convection in low-porosity
hydrothermal systems. Earth and Planetary Science Letters, v.
174, p. 213-229.
1998
D. Nevins, F.
J. Spera, Molecular Dynamics Simulations of Molten CaAl2Si2O8:
Dependence of Structure and Properties on Pressure, American
Mineralogist, (in press), 1998.
J. G. Bryce, F.
J. Spera, and D. J. Stein, Pressure dependence of self-diffusion in the
NaAlO2-SiO2 system: Compositional effects and mechanisms. submitted to
American Mineralogist, 1998.
New
high-temperature rotational viscometer for silicate melts, magamatic
suspensions and emulsions: D. Stein & F. Spera (1998) Review of
scientific Instruments, vol. 69,no.9, pp. 801-807
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