PGS: Helz on Kilauea

The May meeting of the Potomac Geophysical Society will be held May 17th at the Fort Myer Officers’ Club in Arlington, VA ( in the Glassed-in room in the Fife and Drum (main dining room).

Dr. Rosalind Helz will deliver a talk entitled: “The 1959 summit eruption of Kilauea Volcano revisited: Implications for its redox history and the structure of Kilauea’s summit reservoir”

The talk focuses on two themes. The first is to use olivine-melt relationships to track changes in the redox state of the magma. The second is to present data on the thermal history based on analysis of glasses in scoria collected at known times. These are used to constrain the path of magma during the eruption, as well as the thermal and physical structure of Kilauea’s summit reservoir.

Biographical information for Dr. Rosalind Helz

Dr. Rosalind Helz joined the U.S Geological Survey in 1968 and worked for the USGS her entire career, retiring in October 2005.  Much of that career was spent at USGS headquarters in Reston, VA but she has also frequently visited the Hawaiian Volcano Observatory. Her research has included topical field studies in Hawaii, including a long-term investigation of Kilauea Iki lava lake and several studies of recent Kilauean eruptions.

Dr. Helz grew up in Honolulu, Hawaii, where she first became interested in volcanoes.  She holds degrees from Stanford (B.Sc. 1965) and Penn State (M.Sc., 1968; Ph.D., 1978).   She is a Fellow of GSA and MSA, and a member of AGU, the Geological Society of Washington, and the Association for Women Geoscientists.

New Meeting Room and Dining Arrangements: We now meet in the glassed-in room at the back of the main dining room—The Fife and Drum. We order individually from the Club menu, which has a nice variety of dinner offerings. We pay a single bill (I pay it with my Officers Club credit card), so we collect at least $25 from each diner with the agreement, that if one orders more than $20 in food and drink, he adds the amount over $20 to his contribution. The $5 overcharge goes to the Room Fee, Tax, Gratuity, and the Speaker’s Dinner. We collect on the Honor System. We did this for the first time in September, and it worked well. This room change and use of the menu have greatly reduced the loss that we have incurred in the past for having fewer than 20 people dining, and the change has preserved the viability of using the Officers Club for our meetings.

Reception at 6:00. Order Dinner at 7:00. Talk at 8:30 PM. Please note that the meal orders will be taken at 7:00. Allow 15 minutes for security entering Ft. Myer as all civilian vehicles are searched. To ensure access to and from Fort Myer use the Hatfield Gate, open 24 hours a day ( Reservations are not necessary, however, we need a head count, so, if you wish to attend dinner ($25), please inform Bob Fraser at 540-888-3001 or via E-mail at If you wish, please feel free to attend the talk without dinner. Non-members and guests are welcome. Visit the PGS web site at for new meeting announcements, etc. Please send changes of address or email to

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