"It was during my enchanted days of travel that the idea came to me, which, through the years, has come into my thoughts again and again and always happily - the idea that geology is the music of the earth."

Hans Cloos

Dr. Julien M. Allaz (Research Associate, manager of the electron microprobe facility)

M.Sc., University of Lausanne (Switzerland) 2003 | Ph.D., University of Bern (Switzerland) 2008

Personal website (geoloweb.ch): HOME | Photo gallery | About his MSc | About his PhD | De-MA

GEOL-4700/-5700 Summer Class

"Microanalytical Techniques in Solid Materials"

This summer class returns with a NEW electron microprobe (installed in March 2016)! A course designed for an in-depth understanding of microanalytical techniques in solid materials (e.g., alloy, ceramics, glass, minerals). This course will notably cover the following subjects:

  • Full theory on scanning electron microscope and electron microprobe analysis
  • Electron interaction with solid materials, X-ray production...
  • Secondary electron (SE) & back-scattered electon (BSE) images, X-ray element mapping...
  • Energy and Wavelength Dispersive Spectrometry (EDS / WDS)
  • Electron Back-Scatter Diffraction (EBSD)
  • Principles of X-ray diffraction (XRD) and X-ray fluorescence (XRF)
  • Principles of Raman spectroscopy (and Fourier Transform Infrared spectroscopy)
  • Includes basics on instrument vacuum system, electron gun... and other devices.

>>>>> Check here for more information <<<<<

Research interests

  • Metamorphic petrology: Evolution of mineral assemblage, state of equilibrium, thermobarometry calculation (TWQ, THERIAK-DOMINO [R. Berman; C. de Capitani] and THERMOCALC [T. Holland & R. Powell]), disequilibrium process.
  • Microanalysis, isotope geochemistry: Mineral analysis (major and REE), Ar-Ar geochronology, stable oxygen isotope analysis on silicates, U-Th-Pb dating of monazite.
  • Structural geology: Crystallization-deformation-time relations, vein formation, geological maps.


Sun eclipse May 20, 2012 (c) J. Allaz

Dr. Julien M. Allaz
University of Colorado Boulder
Geological Sciences
UCB 399
2200 Colorado Avenue
Boulder, CO 80309-0399


Phone: +1 (303) 735 2413
Cell phone: +1 (413) 210 0917
Office: 222D || EMPA lab: 125A

Julien M. Allaz (University of Colorado Boulder) © update May 3rd, 2017
Background picture: View on the southern Alps from Pizzo Forno (Ticino, Switzerland; J. Allaz © 2008).