Julie Donnelly-Nolan, PhD
Julie Donnelly-Nolan is a research geologist at the U. S. Geological Survey in Menlo Park CA. She does field mapping of volcanoes and collaborates with argon chronologists, paleomagnetists, and petrologists in order to understand potential hazards presented by the volcanoes.
She has spent two decades doing detailed geologic mapping at Newberry Volcano with the goal of unraveling its history and understanding its potential hazards. She also worked for many years at Medicine Lake volcano in N. CA (https://pubs.usgs.gov/sim/2927/). Prior to that she did her U.C. Berkeley PhD thesis on the Clear Lake Volcanic Field in the CA Coast Ranges.
Education and Certifications
PhD, UC Berkeley
Affiliations and Memberships*
American Geophysical Union (AGU)
Geologic Society of America (GSA)
International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI)
Science and Products
Chronology of postglacial eruptive activity and calculation of eruption probabilities for Medicine Lake volcano, northern California
Volcano Hazards Assessment for Medicine Lake Volcano, Northern California
Chemical analyses and K-Ar ages of samples from 13 drill holes, Medicine Lake volcano, California
Argon dating at and near Medicine Lake volcano, California: Results and data
North-central Oregon Cascades; exploring petrologic and tectonic intimacy in a propagating intra-arc rift
Evidence of hydrous differentiation and crystal accumulation in the low-MgO, high-Al2O3 Lake Basalt from Medicine Lake volcano, California
Crustal subsidence and extension and Medicine Lake volcano, northern California
Selected caves and lava-tube systems in and near Lava Beds National Monument, California
IGC field trip T312: South cascades arc volcanism, California and southern Oregon
Research in the Geysers-Clear Lake geothermal area, Northern California
Guides to some volcanic terranes in Washington, Idaho, Oregon, and Northern California
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Chronology of postglacial eruptive activity and calculation of eruption probabilities for Medicine Lake volcano, northern California
Volcano Hazards Assessment for Medicine Lake Volcano, Northern California
Chemical analyses and K-Ar ages of samples from 13 drill holes, Medicine Lake volcano, California
Argon dating at and near Medicine Lake volcano, California: Results and data
North-central Oregon Cascades; exploring petrologic and tectonic intimacy in a propagating intra-arc rift
Evidence of hydrous differentiation and crystal accumulation in the low-MgO, high-Al2O3 Lake Basalt from Medicine Lake volcano, California
Crustal subsidence and extension and Medicine Lake volcano, northern California
Selected caves and lava-tube systems in and near Lava Beds National Monument, California
IGC field trip T312: South cascades arc volcanism, California and southern Oregon
Research in the Geysers-Clear Lake geothermal area, Northern California
Guides to some volcanic terranes in Washington, Idaho, Oregon, and Northern California
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government