M
Michael L. Williams
Researcher at University of Massachusetts Amherst
Publications - 120
Citations - 6992
Michael L. Williams is an academic researcher from University of Massachusetts Amherst. The author has contributed to research in topics: Granulite & Monazite. The author has an hindex of 47, co-authored 119 publications receiving 6433 citations. Previous affiliations of Michael L. Williams include Imperial College London & Sakarya University.
Papers
More filters
Journal ArticleDOI
Microprobe Monazite Geochronology: Understanding Geologic Processes by Integrating Composition and Chronology
TL;DR: The electron microprobe can be used to characterize the geometry of compositional domains, analyze the composition of each domain, and, when carefully configured, determine the U-Th-total Pb age for domains as small as 5 μm in width as mentioned in this paper.
Journal ArticleDOI
Resetting monazite ages during fluid-related alteration
Michael L. Williams,Michael J. Jercinovic,Daniel E. Harlov,Bartosz Budzyń,Callum J. Hetherington +4 more
TL;DR: Fluid-related coupled dissolution-reprecipitation processes can modify the composition of monazite and other orthophosphate minerals at temperatures well below diffusional closure temperatures as mentioned in this paper.
Journal ArticleDOI
Electroexcitation of Nucleon Resonances from CLAS Data on Single Pion Electroproduction
Inna Aznauryan,Volker D. Burkert,A. S. Biselli,H. Egiyan,H. Egiyan,K. Joo,K. Joo,W. Kim,K. Park,K. Park,L. C. Smith,M. Ungaro,M. Ungaro,M. Ungaro,K. P. Adhikari,M. Anghinolfi,H. Avakian,J. Ball,M. Battaglieri,V. Batourine,I. Bedlinskiy,M. Bellis,C. Bookwalter,D. Branford,W. J. Briscoe,W. K. Brooks,W. K. Brooks,S. L. Careccia,Daniel S. Carman,Philip L. Cole,P. Collins,V. Crede,Annalisa D'Angelo,A. Daniel,R. De Vita,E. De Sanctis,A. Deur,B. Dey,S. Dhamija,R. Dickson,Chaden Djalali,D. Doughty,D. Doughty,R. Dupré,A. El Alaoui,Latifa Elouadrhiri,P. Eugenio,G. V. Fedotov,S. Fegan,T. A. Forest,T. A. Forest,M. Y. Gabrielyan,Gerard Gilfoyle,K. L. Giovanetti,F. X. Girod,J. T. Goetz,W. Gohn,E. Golovatch,R. W. Gothe,M. Guidal,L. Guo,L. Guo,K. Hafidi,H. Hakobyan,C. Hanretty,N. Hassall,D. Heddle,D. Heddle,K.H. Hicks,M. Holtrop,Charles Hyde,Y. Ilieva,Y. Ilieva,D. G. Ireland,B. S. Ishkhanov,E. L. Isupov,S. S. Jawalkar,H. S. Jo,J. R. Johnstone,J. R. Johnstone,D. Keller,M. Khandaker,P. Khetarpal,Avraham Klein,Avraham Klein,Friedrich Klein,Laird Kramer,Laird Kramer,V. P. Kubarovsky,S. E. Kuhn,S. V. Kuleshov,V. E. Kuznetsov,K. Livingston,H. Y. Lu,M. Mayer,J. McAndrew,M. E. McCracken,B. McKinnon,C. A. Meyer,T. Mineeva,M. Mirazita,Victor Mokeev,Victor Mokeev,B. Moreno,K. Moriya,B. Morrison,H. Moutarde,E. Munevar,P. Nadel-Turonski,R. Nasseripour,R. Nasseripour,R. Nasseripour,C. S. Nepali,S. Niccolai,G. Niculescu,I. Niculescu,M. R. Niroula,M. Osipenko,A. I. Ostrovidov,A. I. Ostrovidov,S. Park,E. Pasyuk,S. Anefalos Pereira,S. Pisano,O. Pogorelko,S. Pozdniakov,J. W. Price,S. Procureur,Y. Prok,Y. Prok,D. Protopopescu,D. Protopopescu,B. A. Raue,B. A. Raue,G. Ricco,M. Ripani,Barry Ritchie,G. Rosner,P. Rossi,F. Sabatié,M. S. Saini,J. Salamanca,R. A. Schumacher,H. Seraydaryan,Nikolay Shvedunov,D. I. Sober,D. Sokhan,S. S. Stepanyan,P. Stoler,Igor Strakovsky,S. Strauch,S. Strauch,R. Suleiman,M. Taiuti,D. J. Tedeschi,S. Tkachenko,Michael Vineyard,D. P. Watts,D. P. Watts,Larry Weinstein,D. P. Weygand,Michael L. Williams,Michael Wood,L. Zana,J. Zhang,B. Zhao,B. Zhao +166 more
TL;DR: In this article, the electroexcitation of the low mass resonances of the proton was analyzed using fixed-t$ dispersion relations and a unitary isobar model, and the results were obtained in the comprehensive analysis of data from the CBAF large acceptance spectrometer (CLAS) detector at the Thomas Jefferson National Accelerator Facility (JLab).
Journal ArticleDOI
Microprobe monazite geochronology: putting absolute time into microstructural analysis
TL;DR: In this paper, high-resolution compositional mapping and dating of monazite on the electron microprobe is used to put absolute time constraints on P-T-D paths, constrain the rates of metamorphic and deformational processes and provide new links between metamorphism and deformation.
Journal ArticleDOI
Analytical perils (and progress) in electron microprobe trace element analysis applied to geochronology: Background acquisition, interferences, and beam irradiation effects
TL;DR: In this paper, the background intensities are extracted directly from scan data by regression, with particular attention being paid to Th variation, which can result in large age discrepancies, for example, application of background obtained from a high Th domain in monazite to measurement of a low Th domain (1/3 of the amount in the high-Th domain) results in an overestimation of the UMβ background intensity of 0.008 cps/nA.y.