Exciting news! We're transitioning to the Statewide California Earthquake Center. Our new website is under construction, but we'll continue using this website for SCEC business in the meantime. We're also archiving the Southern Center site to preserve its rich history. A new and improved platform is coming soon!
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Shannon A. Mahan

United States Geological Survey
Research Geologist

Expertise: OSL Dating techniques; radiation dosimetry; paleoseismology
 
 
Work: 303-236-7928
About Me Publications
Menges, C. M., Dudash, S. L., & Mahan, S. A. (2022, 09). Time-Space Patterns of Potentially Linked Latest Quaternary Surface Ruptures on the Eastern Pinto Mountain and Southern Mesquite Lake Faults: Implications for Paired Paleoearthquakes on Two Intersecting Conjugate Faults near Twentynine Palms, southern CA. Poster Presentation at 2022 SCEC Annual Meeting. SCEC Contribution 12510
Swanson, B. J., Hoirup, D. F., Lindvall, S. C., Mahan, S. A., & Schwartz, J. (2022, 09). Advances in understanding the late Quaternary activity and post-Miocene slip history of the northwestern “Palomas” Section of the San Gabriel Fault, Black Mountain and Alamo Mountain 7.5’ quadrangles, southern California. Poster Presentation at 2022 SCEC Annual Meeting. SCEC Contribution 12381
Regalla, C., Mahan, S. A., Kirby, E., McDonald, E., & LaPlante, A. (2022, 09). Late Holocene rupture history of the Ash Hill Fault (ECSZ) and the potential for seismogenic strain transfer between adjacent fault systems. Poster Presentation at 2022 SCEC Annual Meeting. SCEC Contribution 11900
Regalla, C., Kirby, E., Mahan, S. A., & McDonald, E. (2021, 08). Late Holocene Rupture History of the Ash Hill Fault, Eastern California Shear Zone. Poster Presentation at 2021 SCEC Annual Meeting. SCEC Contribution 11471
Menges, C. M., & Mahan, S. A. (2019, 08). STRATIGRAPHIC AND GEOCHRONOLOGIC CONSTRAINTS ON TIME-SPACE PATTERNS OF LATEST QUATERNARY SURFACE RUPTURES ON THE EASTERN PINTO MOUNTAIN AND SOUTHERN MESQUITE LAKE FAULT ZONES NEAR TWENTYNINE PALMS, SOUTHERN CALIFORNIA. Poster Presentation at 2019 SCEC Annual Meeting. SCEC Contribution 9879
Onderdonk, N. W., Farris, A., Tyler, E., Pytlewski, A. M., Garcia, A., & Mahan, S. A. (2017, 08). Strath terraces in the Santa Ynez Valley suggest late Quaternary activity on a detachment fault beneath the Western Transverse Ranges, California. Poster Presentation at 2017 SCEC Annual Meeting. SCEC Contribution 7638
Regalla, C., Kirby, E., Mahan, S. A., McDonald, E., Pangrcic, H., Binkley, A., Schottenfels, E., LaPlante, A., Sethanant, I., & Lynch, E. (2022). Late Holocene rupture history of the Ash Hill fault, Eastern California Shear Zone, and the potential for seismogenic strain transfer between nearby faults. Earth Surface Processes and Landforms, 47(12), 2897-2925. doi: 10.1002/esp.5432. SCEC Contribution 12668

Last updated Jan 06, 2023.