Staff Profiles

James Webster

Curator, Department of Earth and Planetary Sciences, Division of Physical Sciences
Professor, Richard Gilder Graduate School

Curriculum Vitae (short version) Download full CV
  • Education

      • Arizona State University, Ph.D, 1987
      • Colorado School of Mines, M.S., 1980
      • North Carolina State University, B.S., 1978
  • Research Interests

    Research Interests

      Dr. Webster investigates how the volatiles water, fluorine, chlorine, sulfur, and carbon dioxide influence how magmas evolve chemically; how they control the formation of metallic ore deposits; and how they impact volcanic eruptions. He investigates how ore deposits are generated through late-stage hydrothermal and mineralizing processes in magmas.  Dr. Webster also studies the influence of volatiles on the melting behavior and stability of minerals, and how and when magmatic-hydrothermal fluids are released from magma. This research involves study of silicate melt inclusions, which are microscopic inclusions of silicate melt trapped in minerals from mineralizing and/or erupting magmas. To assist in this research, he has recently constructed a Vernadsky-style heating stage for observing silicate melt inclusions, with a microscope, while they are melted at high temperatures.  He is presently working on hydrothermal experiments involving apatite, silicate melts, and volatile-rich fluids to better understand magmatic processes. With scientists from the University of Hannover, Germany, he is developing a model to compute Cl solubilities in silicate melts.  Other research – with museum colleagues – on sulfur, chlorine, carbon dioxide, and water provides information on the nature of gases released during explosive volcanism at Augustine volcano, Alaska, and Dr. Webster has recently begun a new study on sapphire- and spinel-bearing metamorphic rocks of the Mogok region of Myanmar. 

  • Publications

  • Teaching Experience

    Teaching Experience