Rosalind Tuthill Helz, PhD


Rosalind Helz is a Scientist Emeritus at the Frances Bascom Center. She received her undergraduate degree in Geology from Stanford University in 1965, and graduate degrees in Geochemistry and Mineralogy from Penn State University in 1968 (M.S.) and 1978 (Ph.D). Since joining the USGS in March 1968, she has devoted her career to studying the behavior of mafic magmas, specializing in the use of petrology and chemistry to elucidate differentiation processes in mafic magmatic systems. Ongoing work includes completion of reports on the long-term study of Kilauea Iki lava lake, Hawaii and completion of reports on studies of the basal sill swarm associated with the Stillwater Complex, Montana.

Recent Accomplishments


  • Ph.D, Mineralogy and Petrology, The Pennsylvania State University, 1978 
  • M.Sc., Mineralogy and Petrology, The Pennsylvania State University, 1968 
  • B.S., Geology, Stanford University, 1965


Professional Studies/Experience

  • Smithsonian Museum of Natural History (Research Associate)


Professional societies/affiliations/committees/editorial boards

Honors, awards, recognition, elected offices

Scientific/Oral Presentations, Abstracts