Professor of Geology

  • PhD Geology, Michigan Technological University, Houghton, MI
  • MS Geology, Michigan Technological University, Houghton, MI
  • BS Geology, University of Oregon, Eugene, OR

Research interests:

Dr. Halsor has taught at Wilkes University for over 25 years. Originally from Oregon, he received his undergraduate degree in Geology at the University of Oregon and then traveled extensively throughout the West while employed as an exploration geologist in the oil and mineral industries. A fascination with mountain systems and their geologic formation led Dr. Halsor to Michigan Technological University where he earned his Master's and Doctoral degrees in geology. It was at Michigan Tech where Dr. Halsor cultivated his growing interest in volcanic processes, inspired by the 1980 eruption of Mt. St. Helens and by exceptional research and field experiences in volcanology provided by Professor William I. Rose. 

While at Wilkes, Dr. Halsor has taught a variety of courses in the Earth & Environmental Sciences program. His primary teaching responsibilities are in geology and geospatial technology.  Dr. Halsor is coordinator for the minor program in Geology and serves as an advisor to independent and senior capstone research projects. 

Dr. Halsor is the “hard rock” geologist in the Department with research areas that include geologic hazards, mineral resources and solid earth energy.  He conducts research on active volcanic systems in the western U.S., Central America, Mexico and Indonesia.  Over a ten year period, Dr. Halsor led an annual field trip with Wilkes University students to Yellowstone National Park where volcanic unrest was measured and monitored through a high-precision GPS survey.     

Certificates and Certifications

  • Professional Geologist (PG), Pennsylvania

Selected Teaching

  • Physical Geology
  • Mineralogy
  • Petrology
  • GPS Mapping
Selected Scholarship
  • Skvarla, K.M., Yamrus, L. and Halsor, S.P. Modeling compositional variation in volcanic rocks from the north flank of Mount St. Helens, Washington. Northeastern meeting of the Geological Society of America, March 2014.
  • Chesner, C.A., Bohnenstiehl, D.R., Halsor, S.P., J. Liu and K.W. Wegmann. Collaborative research: The post-collapse history of the 74 ka Toba Caldera, Sumatra, Indonesia. NSF proposal ($355K), EAR-Petrology and Geochemistry, submitted July 2013.
  • Cummings, K.J., Palmiter, B., Skvarla, K.M., Weron, J.R. and Halsor, S.P. Petrographic and primary porosity analysis of selected cores samples from the Duncannon Member of the Catskill Formation, Luzerne County, Pennsylvania. Northeastern meeting of the Geological Society of America, March 2013.
  • Chesner, C.A., Dolan, M.T., Halsor, S.P., Bohnenstiehl, D.R., J. Liu and A. Nasution. A seismic reflection profiling survey of Lake Toba, Sumatra, Indonesia: preliminary findings from the field. Annual International Meeting of the American Geophysical Union, December 2012.
  • Regan, A., Moore, I., Halsor, S.P. and Oram, B. Groundwater quality and aquifer vulnerability mapping. Northeastern meeting of the Geological Society of America, March 2012.
  • Halsor, S.P., Toothill, W. and Chesner, C.A. Annual high-precision ground deformation survey at the Yellowstone caldera, Yellowstone National Park, June 2010.
Selected Service
  • Chairperson, Environmental Engineering and Earth Sciences Department, June 2015-present
  • Member, Wilkes University Energy Minor task force, 2013-present
  • Author and coordinator, EEES Department summer Garman research award, 2013-present
  • Member, Tenure & Promotion Committee (TAP), 2008-2010
  • Faculty campus representative, Geological Society of America, 2000-present