Published Writings and Creative Activities

Chapters in Books

2000 H.P. Scott, Q. Williams and E. Knittle, Infrared Spectra of the Zircon and Scheelite Polymorphs of ZrSiO4 to 26 GPa, in High Pressure Science and Technology: Proceedings of the XVII AIRAPT Conference, M.H. Manghnani, W. Nellis and M. Nicol (Eds.).

1998 E.J. Garnero, J. Revenaugh, Q. Williams, T. Lay and L.H. Kellogg, Ultra-low Velocity Zone at the Core-Mantle Boundary, The Core-Mantle Boundary Region, Eds. M. Gurnis, M. Wysession, E. Knittle and B. Buffett, AGU Press, Washington, D.C., pp. 319-334.

1998 M.E. Wysession, T. Lay, J. Revenaugh, Q. Williams, E.J. Garnero, R. Jeanloz and L.H. Kellogg, The D" Discontinuity and its Implications, The Core-Mantle Boundary Region, Eds. M. Gurnis, M. Wysession, E. Knittle and B. Buffett, AGU Press, Washington, D.C., pp. 273-297.

1998 T. Lay, Q. Williams, E.J. Garnero, L.H. Kellogg and M. Wysession, Seismic Wave Anisotropy in the D" Region and its Implications, The Core-Mantle Boundary Region, Eds. M. Gurnis, M. Wysession, E. Knittle and B. Buffett, AGU Press, Washington, D.C., pp. 299-318.

1998 Q. Williams, The Temperature Contrast across D", The Core-Mantle Boundary Region, Eds. M. Gurnis, M. Wysession, E. Knittle and B. Buffett, AGU Press, Washington, D.C., pp. 73-81.

1998 Q. Williams, High Pressure Infrared Spectra of Feldspars: Constraints on Compressional Behavior, Amorphization and Diaplectic Glass Formation, Properties of Earth and Planetary Materials at High Pressures and Temperatures, M. H. Manghnani and T. Yagi, Eds., American Geophysical Union Press, Washington, D.C., pp. 531-543.

1996 D. Orange, E. Knittle, D.L. Farber and Q. Williams, Raman Spectroscopy of Crude Oils and Hydrocarbon Fluid Inclusions: A Feasibility Study, in Mineral Spectroscopy: A Tribute to Roger G. Burns, Eds. M.D. Dyar, C. McCammon and M.W. Schaefer, Geochemical Society Special Publication, 5, 65-81

1995 Q. Williams, Infrared, Raman and Optical Spectroscopy of Earth Materials, in AGU Handbook of Physical Constants, Vol. 2, T.J. Ahrens, Ed., pp. 291-302, American Geophysical Union, Washington, D.C.

1992 Q. Williams, A Vibrational Spectroscopic Study of Hydrogen in High Pressure Mineral Assemblages, in High Pressure Research: Application to Earth and Planetary Sciences, pp. 289-296, M.H. Manghnani and Y. Syono, Eds., American Geophysical Union, Washington, D.C.

1992 E. Knittle, A. Hathorne, M. Davis and Q. Williams, A Spectroscopic Study of the High-Pressure Behavior of the O4H4 Substitution in Garnet, in High Pressure Research: Application to Earth and Planetary Sciences, pp. 297-304, M.H. Manghnani and Y. Syono, Eds., American Geophysical Union, Washington, D.C.

1991 Q. Williams and R. Jeanloz, Ultra-High Pressure Experimental Techniques, in Molten Salt Techniques, Vol. 4, R.J. Gale and D.G. Lovering, Eds., pp. 193-227, Plenum Publishing Co., New York.

1989 Q. Williams, E. Knittle and R. Jeanloz, Geophysical and Crystal Chemical Significance of (Mg,Fe)SiO3 Perovskite, in Perovskite: A Structure of Great Interest in the Earth and Material Sciences, A. Navrotsky and D.J. Weidner, Eds., pp. 1-12, American Geophysical Union, Washington, D.C.

1988 Q. Williams and R. Jeanloz, Analysis of CsI Shock-Wave Data in Terms of High-Temperature Dissociation, in Proceedings of the APS Topical Conference on Shock Waves in Condensed Matter, Eds. S.C. Schmidt and N.C. Holmes, Elsevier Science Publishers B.V., Amsterdam, pp. 73-75.

Articles in Professional Journals

2000 K.D. Collerson, S. Hapugoda, B.S. Kamber and Q. Williams, Rocks from the Mantle Transition Zone: Majorite-Bearing Xenoliths from Malaita, Southwest Pacific, Science 288, 1215-1223.

2000 D.L. Farber, Q. Williams and F.J. Ryerson, Divalent Cation Diffusion in Mg2SiO4-spinel, b-phase and olivine: Implications for the Electrical Conductivity of the Mantle, Journal of Geophysical Research 105, 513-529.

2000 C.C. Lundstrom, J. Gill and Q. Williams, A Geochemically Consistent Hypothesis for MORB Generation, Chemical Geology 162, 105-126.

1999 H.P. Scott and Q. Williams, An Infrared Spectroscopic Study of Lawsonite to 20 GPa, Physics and Chemistry of Minerals 26, 437-445.

1999 C.C. Lundstrom, D.E. Sampson, M.R. Perfit, J. Gill and Q. Williams, Insights into Mid-ocean Ridge Basalt Petrogenesis: U-series Disequilibria from the Siqueiros Transform, Lamont Seamounts, and East Pacific Rise, Journal of Geophysical Research 104, 13035-13048.

1998 R. Jeanloz and Q. Williams, The Core-Mantle Boundary Region, Reviews in Mineralogy 37, 241-259.

1998 T. Lay and Q. Williams, Dynamics of Earth¹s Interior, Geotimes 43, 26-30 (unreviewed retrospective).

1998 C.C. Lundstrom, H.F. Shaw, F.J. Ryerson, Q. Williams and J. Gill, Crystal Chemical Control of Clinopyroxene-Melt Partitioning in the Di-Ab-An System: Implications for Elemental Fractionations in the Depleted Mantle, Geochimica et Cosmochimica Acta 62, 2849-2862.

1998 P. Cervantes, Q. Williams, M. Cote, M. Rohlfing, M.L. Cohen and S.G. Louie, Band Structures of CsCl-structured BaS and CaSe at High Pressure: Implications for Metallization Pressures of the Alkaline Earth Chalcogenides, Physical Review B 58, 9793-9800.

1998 C.F. Larsen and Q. Williams, The Overtone Spectra and Hydrogen Potential of H2O at High Pressure, Physical Review B 58, 8306-8312.

1998 Q. Williams, J. Revenaugh and E. Garnero, A Correlation between Ultra-low Basal Velocities in the Mantle and Hot Spots, Science 281, 546-549.

1998 O.T. Tobisch and Q. Williams, Use of Microgranitoid Enclaves as Solid State Strain Markers in Deformed Granitic Rocks: An Evaluation, Journal of Structural Geology 20, 727-743.

1998 C.C. Lundstrom, Q. Williams and J. Gill, Investigating Solid Mantle Upwelling Rates beneath Mid-ocean Ridges using U-Series Disequilibria: I. A Global Approach, Earth and Planetary Science Letters 157, 151-165.

1998 C.C. Lundstrom, J. Gill, Q. Williams and B.B. Hanan, Investigating Solid Mantle Upwelling Rates beneath Mid-ocean Ridges using U-Series Disequilibria: II. A Local Study at 33°S Mid-Atlantic Ridge, Earth and Planetary Science Letters 157, 167-181.

1998 T. Lay, Q. Williams and E. Garnero, The Core-Mantle Boundary and Deep Earth Dynamics, Nature 392, 461-468.

1997 Q. Williams and E. Knittle, Constraints on Core Chemistry from the Pressure Dependence of the Bulk Modulus, Physics of the Earth and Planetary Interiors 100, 49-59.

1997 E. Morris and Q. Williams, Electrical Conductivity of Fe3O4 to 48 GPa: Compression-induced Changes in Electon Hopping at Mantle Pressures, Journal of Geophysical Research 102, 18139-18148.

1996 P. Cervantes, Q. Williams, M. Coté, O. Zakharov and M. L. Cohen, Band Structure of CdS and CdSe at High Pressure, Physical Review B 54, 17585-17590.

1996 Q. Williams and L. Guenther, Pressure-induced Changes in the Bonding and Orientation of Hydrogen in FeOOH-goethite, Solid State Communications 100, 105-109.

1996 Q. Williams and E. Garnero, Seismic Evidence for Partial Melting at the Base of Earth's Mantle, Science 273, 1528-1530.

1996 D.L. Farber and Q. Williams, An in situ Raman Spectroscopic Study of Na2Si2O5 at High Pressures and Temperatures: Structures of Compressed Liquids and Glasses, American Mineralogist 81, 273-283.

1996 J. Faust and Q. Williams, Infrared Spectroscopy of Phase B at High Pressures: Hydroxyl Bonding under Compression, Geophysical Research Letters 23, 427-430.

1996 Q. Williams and E. Knittle, Infrared and Raman spectra of Ca5(PO4)3F-Fluorapatite at High Pressures: Compression-induced Changes in Phosphate Site and Davydov Splittings, Journal of Physics and Chemistry of Solids 57, 417-422.

1995 C. Closmann and Q. Williams, In situ Investigation of High Pressure Hydrated MgSiO3 glasses: Hydroxyl Vibrations as a Probe of Glass Structure, American Mineralogist 80, 201-212.

1995 E. Knittle and Q. Williams, Static Compression of e-FeSi: An Evaluation of Reduced Si as a Deep Earth Constituent, Geophysical Research Letters 22, 445-448.

1995 C.C. Lundstrom, J. Gill, Q. Williams and M. Perfit, Mantle Melting and Basalt Extraction by Equilibrium Porous Flow, Science 270, 1958-1961.

1994 D.L. Heinz, E. Knittle, J.S. Sweeney, Q. Williams and R. Jeanloz, High Pressure Melting of (Mg,Fe)SiO3-Perovskite, Science 264, 279-280, (Technical Comment).

1994 D.L. Farber, Q. Williams, and F.J. Ryerson, Diffusion in Mg2SiO4 Polymorphs and Chemical Heterogeneity in the Mantle Transition Zone, Nature 371, 693-695.

1994 Q. Williams and O.T. Tobisch, Microgranitic Enclave Shapes and Magmatic Strain Histories: Constraints from Drop Deformation Theory, Journal of Geophysical Research 99, 24,359-24,368.

1994 C.C. Lundstrom, H.F. Shaw, F.J. Ryerson, D.L. Phinney, J.B. Gill and Q. Williams, Compositional Controls on the Partitioning of U, Th, Ba, Pb, Sr and Zr between Clinopyroxene and Haplobasaltic Melt: Implications for Uranium Series Disequilibria in Basalts, Earth and Planetary Science Letters 128, 407-423.

1993 E. Knittle and Q. Williams, A Raman Spectroscopic Study of the Zircon-Scheelite Transition in ZrSiO4 at 300 K, American Mineralogist 78, 245-252.

1993 Q. Williams, R.J. Hemley, M.B. Kruger and R. Jeanloz, High Pressure Infrared Spectra of a-Quartz, Coesite, Stishovite and Amorphous Silica, Journal of Geophysical Research 98, 22157-22170.

1992 Q. Williams and T.F. Cooney, Cation Field Effects on Orthosilicate Glass Vibrations, American Mineralogist 77, 1-7.

1992 D.L. Farber and Q. Williams, Pressure-Induced Coordination Changes in Alkali-Germanate Melts: An In Situ Spectroscopic Investigation, Science 256, 1427-1430.

1992 Q. Williams, B. Collerson and E. Knittle, A Vibrational Spectroscopic Study of MgCO3-Magnesite and Calcite-III at High Pressures, American Mineralogist 77, 1158-1165.

1991 Q. Williams, E. Knittle and R. Jeanloz, The High Pressure Melting Curve of Iron: A Technical Discussion, Journal of Geophysical Research 96, 2171-2184.

1991 R. Jeanloz and Q. Williams, Glasses Come to Order, Nature 350, 659-660 (News and Views).

1991 H. Houston and Q. Williams, Fast Rise Times and the Physical Mechanism of Deep Earthquakes, Nature 352, 520-522.

1991 S. Kraft, E. Knittle and Q. Williams, Carbonate Stability in the Earth's Mantle: A Vibrational Spectroscopic Study of Aragonite and Dolomite at High Pressures and Temperatures, Journal of Geophysical Research 96, 17997-18009.

1991 J.E. Vidale, Q. Williams and H. Houston, Waveform Effects of a Metastable Olivine Tongue in Subducting Slabs, Geophysical Research Letters 18, 2201-2204.

1990 Q. Williams, Molten (Mg0.88Fe0.12)2SiO4 at Lower Mantle Conditions: Melting Products and Structure of Quenched Glasses, Geophysical Research Letters 17, 635-638.

1990 Q. Williams and R. Jeanloz, Melting Relations in the Iron-Sulfur System at Ultra-High Pressures: Implications for the Thermal State of the Earth, Journal of Geophysical Research 95, 19299-19310,

1990 Q. Williams, E. Knittle, R. Reichlin, S. Martin and R. Jeanloz, Structural and Electronic Properties of Fe2SiO4-Fayalite at Ultra-high Pressures: Amorphization and Gap Closure, Journal of Geophysical Research 95, 21549-21563.

1989 Q. Williams, P. McMillan and T.F. Cooney, Vibrational Spectra of Olivine Glasses: The Mg-Mn Join, Physics and Chemistry of Minerals 16, 352-359.

1989 Q. Williams and R. Jeanloz, Static Amorphization of Anorthite at 300 K and Comparison with Diaplectic Glass, Nature 338, 413-415.

1989 P. McMillan, M. Akaogi, E. Ohtani, Q. Williams, R. Nieman and R. Sato, Cation Disorder in Garnets Along the Mg3Al2Si3O12-Mg4Si4O12 Join: An Infrared, Raman and NMR Study, Physics and Chemistry of Minerals 16, 428-435.

1989 V.C. Kress, Q. Williams and I.S.E. Carmichael, When Is a Silicate Melt Not a Liquid?, Geochimica et Cosmochimica Acta 53, 1687-1692.

1989 M.B. Kruger, Q. Williams and R. Jeanloz, Vibrational Spectra of Mg(OH)2 and Ca(OH)2 Under Pressure, Journal of Chemical Physics 91, 5910-5915.

1988 V. C. Kress, Q. Williams and I.S.E. Carmichael, Ultrasonic Investigation of Melts in the System Na2O-Al2O3-SiO2, Geochimica et Cosmochimica Acta 52, 283-293; Correction to "Ultrasonic Investigation of Melts in the System Na2O-Al2O3-SiO2" Geochimica et Cosmochimica Acta 53, 1153, 1989.

1988 Q. Williams and R. Jeanloz, Spectroscopic Evidence for Coordination Changes in Amorphous Silicates at High Pressures, Science 239, 902-905.

1987 Q. Williams, R. Jeanloz, J. Bass, B. Svendsen and T.J. Ahrens, The Melting Curve of Iron to 250 GPa: A Constraint on the Temperature at Earth's Center, Science 236, 181-182.

1987 Q. Williams, R. Jeanloz and P. McMillan, Vibrational Spectra of MgSiO3-Perovskite: Zero Pressure Raman and Mid-Infrared Spectra to 27 GPa, Journal of Geophysical Research 92, 8116-8128.

1987 Q. Williams and R. Jeanloz, Pressure-Induced Disproportionation of Cesium Iodide, Physical Review Letters 59, 1132-1135.

1986 Q. Williams and R. Jeanloz, Measurements of CsI Band-Gap Closure to 93 GPa, Physical Review Letters 56, 163-164.

1986 Q. Williams, R. Jeanloz and M. Akaogi, Infrared Vibrational Spectra of Beta-Phase Mg2SiO4 and Co2SiO4 to Pressures of 27 GPa, Physics and Chemistry of Minerals 13, 141-145.

1985 Q. Williams and R. Jeanloz, Pressure Shift of Cr3+-Ion-Pair Emission Lines in Ruby, Physical Review B 31, 7449-7451.