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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. Most titles are hyper-linked to PDF files which can be read via download of Adobe Reader.

2016

Spera, F. & Scruggs, M. (2016) Fractional Crystallization and Assimilation
In Encyclopedia of Geochemistry: A Comprehensive Reference Source on the Chemistry of the Earth, (ed) W.White, Springer International Publishing

http://link.springer.com/referenceworkentry/10.1007/978-3-319-39193-9_285-1


Spera, Frank J., Schmidt, J. S., Bohrson, W. A. and Brown G. A., 2016. Dynamics and thermodynamics of magma mixing: Insights from a simple exploratory model.
American Mineralogist, Vol. 97, p.1155-1164.
Main Paper    •     Appendix 1     •     Tables

Nelson, Ryan T., Spera, F.J. and Ghiorso, M.S., 2016. (REVISION 2) Thermodynamics, self-diffusion, and structure of liquid NaAlSi3O8 to 30 GPa by classical molecular dynamics simulations, American Mineralogist IN PRESS

2015

Lesher, C.E., Spera, F.J., 2015. Thermodynamic and Transport Properties of Silicate Melts and Magma. In: Sigurdsson, H., Houghton, B., Rymer, H., Stix, J., McNutt, S. (Eds.), The Encyclopedia of Volcanoes, pp. 113-141.

2014

Wendy Bohrson, Spera, F., Ghiorso, M., Brown, G., Creamer, J. and Mayfield, A. (2014), Thermodynamic model for energy-constrained open system evolution of crustal magma bodies undergoing simultaneous recharge, assimilation and crystallization: The magma chamber simulator. J. Petrology, v. 55, p. 1685-1718

Dane Tikunoff and Spera, F. (2014), Thermal conductivity of molten and glassy NaAlSi3O8, CaMgSi2O6 and Mg2SiO4 by Non Equilibrium Molecular Dynamics at elevated Temperature and Pressure, American Mineralogist, v.99, p. 2328-2336.

Kevin T. Coffey, Axel K. Schmitt, Anabel Ford, Frank J. Spera, Constance Christensen, Jennifer Garrison (2014), Volcanic ash provenance from zircon dust with an application to Maya pottery, Geology, G35376.1, published on May 22, 2014, doi:10.1130/G35376.1

2012

G. Ben Martin, M. Ghiorso and F. Spera (2012), Transport properties and equation of state of 1-bar eutectic melt in the system CaAl2Si2O8-CaMgSi2O6 by molecular dynamics simulation, American Mineralogist, Vol. 97, p.1155-1164.

2011

Spera, F.J., 2011, BOOK REVIEW, DIFFUSION IN MINERALS AND MELTS, Youxue Zhang and Daniele J. Cherniak, Editors. (2010) Reviews in Mineralogy and Geochemistry, vol. 72, 1038 pages. ISBN: 978-0-939950-86-7. $50.00 (U.S.), American Mineralogist, 96, p.1422

F. Spera, M. Ghiorso and D. Nevins (2011), Structure, thermodynamic and transport properties of liquid MgSiO3: Comparison of molecular models and laboratory results, GCA Vol. 75, p.1272-1296

Fowler, S., Spera, F., Reply to Gualda & Ghiorso Comment on Fowler & Spera (2011). A Metamodel for Crustal Magmatism: Phase Equilibria of Giant Ignimbrites, J. Petrology, Vol. 52 No. 3 p.435-438, doi:10.1093/petrology/egq096.

2010

Fowler, S.J. and Spera, F.J., (2010) A Metamodel for Crustal Magmatism: Phase Equilibria of Giant Ignimbrites, J. Petrology 51(9): 1783-1830 doi:10.1093/petrology/egq039 .

2009

Benedetto De Vivo, Annamaira Lima,Robert J. Bodnar, Alfonsa Milia, Frank J. Spera, Concettina Nunziata, Harvey E. Belkin, Claudia Cannatelli, Il rischio eruzione nei Campi Flegrei. Le Scienze, 496 December 2009, 97-103.

Annamaira Lima, Benedetto De Vivo, Frank J. Spera, Robert J. Bodnar, Alfonsa Milia, Concettina Nunziata, Harvey E. Belkin, Claudia Cannatelli, Thermodynamic model for uplift and deflation episodes (bradyseism) associated with magmatic-hydrothermal activity at the Campi Flegrei (Italy). Earth-Science Reviews 97 (2009) 44-58.

Ghiorso M. and Spera F. (2009). Large scale simulations. In Rev. Mineral. Geochem., vol. 71 (eds. R. Wentzcovitch and L. Stixrude). Mineralogical Society of America, pp. 437-463.

Frank J Spera; Dean Nevins; Mark S. Ghiorso; Ian Cutler, Structure, thermodynamics and transport properties of CaA12Si2O8 liquid. Part I: Molecular dynamics simulations, Geochimica et Cosmochimica Acta 73 (2009) 6918-6936.

Mark S. Ghiorso; Dean Nevins; Ian Cutler; Frank J. Spera, Molecular dynamics studies of CaA12Si2O8 liquid. Part II: Equation of state and a thermodynamic model, Gechimica et Cosmochimica Acta 73 (2009) 6937-6951.

Till, C.B., Gans, P.B., Spera, F.J., MacMillan, I., Blair, K.D., Perils of petrotectonic modeling: A view from southern Sonora, Mexico, J. Volcanol. Geotherm. Res. Vol. 186, p. 160-168 (2009) .

Nevins, D, Spera, FJ, Ghiorso,M., Shear Viscosity and diffusion in liquid MgSiO3: Transport properties and implications for terrestrial planet magma oceans, American Mineralogist, Vol 94, p 975-980, 2009 .

Martin, B, Spera, FJ, Ghiorso,M, Nevins,D, Structure, thermodynamic and transport properties of molten Mg2SiO4: Molecular dynamics simulations and model EOS, American Mineralogist, Vol 94, p 693-703, 2009 .

Spera, F.J., Fowler, S.J. (2009), 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., i Volcanic and Tectonic Hazard Assessment for Nuclear Facilities, Cambridge University Press, Cambridge, UK.

2008

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

Anabel Frod; Frank J. Spera, Fresh Volcanic Glass Shards in the pottery sherds of the Maya lowlands, Research Reports in Belizean Archaeology, Vol. 4, 2007, pp. 111-118.

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/'/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/'/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., and W. A. Bohrson (2002), Energy-constrained open-system magmatic processes 3. Energy-Constrained Recharge, Assimilation, and Fractional Crystallization (EC-RAFC), Geochem. Geophys. Geosyst., 3(12), 8001, doi:10.1029/2002GC000315.

 

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, vol. 83, pp. 1220-1230.

J. Bryce, F. Spera, and D. Stein, Pressure dependence of self-diffusion in the NaAlO2-SiO2 system: Compositional effects and Mechanisms. American Mineralogist, Vol. 84, pp. 345-356, 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

 

University of California, Santa Barbara

Department of Earth Science