Director and State Geologist
Administrative Services
Geohazards and Geophysics
Joseph P. Cook, M.S.
Chief of Geohazards
Earth Fissures, Debris Flows, Quaternary Mapping
Jeri J. Young, Ph.D.
Chief of Geophysics
Seismicity, Quaternary Mapping
Philip A. Pearthree, Ph.D
Research Scientist
Quaternary mapping, seismicity, geologic hazards
Ann Youberg, Ph.D.
Research Scientist
Landslides, Post-Wildfire Debris Flows
Rebecca Beers, M.S.
Research Scientist
Geomorphology, Post-Wildfire Debris Flows, Geomorphic Hazards
Chad Kwiatkowski, M.S.
Research Scientist
Geologic Hazards, Quaternary Geologic Mapping, Post-Wildfire Debris Flows
Alexander B. Neely, Ph.D.
Research Scientist
Geomorphology, Sediment Transport, and Field Geology
Paul Allen, M.S.
Research Scientist / Seismic Technician
Seismology, Seismic Networks, Subsurface Imaging
Mineral Resources and Geologic Mapping
Calvin Mako, Ph.D.
Senior Research Scientist
Structural Geology, Metamorphic Petrology, Tectonics, and Geochronology
Kyle House, Ph.D.
Senior Research Scientist
Surficial Geologic Mapping, Catastrophic Floods, Landslides, Landscape Evolution
Brad Johnson, Ph.D.
Research Scientist
Bedrock Mapping, Structural Geology, Mineral Deposits
Mark E. Holland, Ph.D.
Research Scientist
Structural Geology, Tectonics, Geochronology, and Field Geology
Chong Ma, Ph.D.
Research Scientist
Structural Geology, Tectonics, Geo/Thermochronology, Geochemistry
Nathan Carey, M.S.
Research Scientist
Economic Geology, Geochemistry, and Petrology
Zoey C. Carey, M.S.
Research Scientist
Mineral Deposits, Geo/Thermochronology, Stratigraphy
Marcus Silva, M.S.
Research Scientist
Mine Waste Mapping and Characterization, Abandoned Mines, Mineral Deposits and Exploration
Billy Fitzpatrick, M.S.
Research Scientist
Mineral Deposits, Geochemistry, Electron Microscopy, Field Mapping
Energy Geology
Lisa Thompson, M.S.
Chief of Energy Geology
Volcanology, GIS, Energy Geology, Geologic Mapping
Tawnya Wilson, M.S
Research Scientist
Subsurface Characterization, Energy Geology, Sedimentology & Stratigraphy
Zsofia Poros, Ph.D.
Research Scientist
Reservoir Characterization, Sedimentary Petrology, Diagenesis, Fluid Inclusions
Brian Coven, M.S.
Research Scientist
Basin Analysis, Structural Geology, Geothermal
Data Science
Andrew Zaffos, Ph.D.
Chief of Data Science & Data Architect
Paleobiology, Computer Science, Geography, Sequence Stratigraphy
Ellie Broadman, Ph.D.
Research Scientist & Data Manager
Climate, Geography, Outreach, Science Communication
