Ray J. Weldon
Department of Earth Sciences
University of Oregon
University of Oregon
Professor
Expertise: Neotectonics; Structural and Quarternary Geology
About Me
Publications
No bio available.
SCEC Participation
SCEC Mentor (2004)Hammond, B. C., Johnson, K. M., Blewitt, G., Kreemer, C. W., Weldon, R. J., & Burgette, R. J. (2014, 04). GPS and InSAR constraints on vertical tectonic motion improve the estimate of slip rate of the San Andreas Fault in southern California. Poster Presentation at EGU General Assembly 2014. SCEC Contribution 6040
Jordan, T. H., Anderson, J. G., Biasi, G., Campbell, K., Dawson, T., DeShon, H., Gerstenberger, M., Gregor, N., Kelson, K., Lee, Y., Luco, N., Marzocchi, W., Rowshandel, B., Schwartz, D., Shome, N., Toro, G., Weldon, R., Wong, I., & Abrahamson, N. (2023). Panel Review of the USGS 2023 Conterminous U.S. Time-Independent Earthquake Rupture Forecast. Bulletin of the Seismological Society of America, 114(1), 572-607. doi: 10.1785/0120230140. SCEC Contribution 13329
Weldon, R. J. (2023, 09). How expanding SCEC and starting CRESCENT will accelerate our understanding of faulting and related hazards. Oral Presentation at 2023 SCEC Annual Meeting. SCEC Contribution 12857
Young, E. K., Cowgill, E., Scharer, K. M., Anderson-Merritt, E. O., Keen-Zebert, A., & Weldon, R. J. (2021). Late Holocene Slip Rate of the Mojave Section of the San Andreas Fault near Palmdale, California. Bulletin of the Seismological Society of America, 111(6), 3204-3225. doi: 10.1785/0120200278. SCEC Contribution 10987
McGill, S. F., Owen, L. A., Weldon, R. J., Kendrick, K. J., & Burgette, R. J. (2021). Latest Quaternary slip rates of the San Bernardino strand of the San Andreas fault, southern California, from Cajon Creek to Badger Canyon. Geosphere, 17(5), 1354-1381. doi: 10.1130/GES02231.1. SCEC Contribution 10001
Young, E. K., Scharer, K. M., Keen-Zebert, A., Anderson-Merritt, E., Cowgill, E. S., & Weldon, R. J. (2019, 08). New interpretations at the Ranch Center and Key Slide slip rate sites, Mojave section of the San Andreas Fault, Palmdale, CA. Poster Presentation at 2019 SCEC Annual Meeting. SCEC Contribution 9794
Figueiredo, P. M., Weldon, R. J., Owen, L. A., & Onderdonk, N. W. (2019, 08). Preliminary Geochronology data for Cajon Pass Terraces- implications to the regional chronosequence. Poster Presentation at 2019 SCEC Annual Meeting. SCEC Contribution 9649
Figueiredo, P. M., Weldon, R. J., & Owen, L. A. (2018, 08). Revisiting the Cajon Pass Quaternary Terraces with Geochronology dating implications for the long term slip rates of the San Jacinto and San Andreas systems. Poster Presentation at 2018 SCEC Annual Meeting. SCEC Contribution 8767
Liu, J., Yuan, Z., Wang, W., Weldon, R. J., Oskin, M. E., & Shao, Y. (2018, 08). A 6000-Year-Long Paleoseismologic Record of Earthquakes along the Xorkoli Section of the Altyn Tagh Fault, China. Poster Presentation at 2018 SCEC Annual Meeting. SCEC Contribution 8241
Scharer, K., Weldon, R., Biasi, G., Streig, A., & Fumal, T. (2017). Ground-rupturing earthquakes on the northern Big Bend of the San Andreas Fault, California, 800 A.D. to Present. Journal of Geophysical Research: Solid Earth, 122(3), 2193-2218. doi: 10.1002/2016JB013606. SCEC Contribution 7187
Field, E. H., Jordan, T. H., Page, M. T., Milner, K. R., Shaw, B. E., Dawson, T. E., Biasi, G. P., Parsons, T., Hardebeck, J. L., Michael, A. J., Weldon, R. J., Powers, P. M., Johnson, K. M., Zeng, Y., Felzer, K. R., van der Elst, N. J., Madden, C., Arrowsmith, R., Werner, M. J., & Thatcher, W. R. (2017). A Synoptic View of the Third Uniform California Earthquake Rupture Forecast (UCERF3). Seismological Research Letters, 88(5), 1259-1267. doi: 10.1785/0220170045. SCEC Contribution 7165
Scharer, K. M., Fumal, T. E., Weldon, R. J., & Streig, A. R. (2015). Photomosaics and event evidence from the Frazier Mountain paleoseismic site, trench 1, cuts 5–24, San Andreas Fault Zone, southern California (2010–2012). , : . SCEC Contribution 6028
Field, E. H., Biasi, G. P., Bird, P., Dawson, T., Felzer, K. R., Jackson, D. D., Johnson, K. M., Jordan, T. H., Madden, C. L., Michael, A. J., Milner, K. R., Page, M. T., Parsons, T., Powers, P. M., Shaw, B. E., Thatcher, W. R., Weldon, R. J., & Zeng, Y. (2015). Long‐Term Time‐Dependent Probabilities for the Third Uniform California Earthquake Rupture Forecast (UCERF3). Bulletin of the Seismological Society of America, 105(2A), 511-543. doi: 10.1785/0120140093. SCEC Contribution 2099
Field, E. H., Biasi, G. P., Bird, P., Dawson, T., Felzer, K. R., Jackson, D. D., Johnson, K. M., Jordan, T. H., Madden, C. L., Michael, A. J., Milner, K. R., Page, M. T., Parsons, T., Powers, P. M., Shaw, B. E., Thatcher, W. R., Weldon, R. J., & Zeng, Y. (2015). Long-Term Time-Dependent Probabilities for the Third Uniform California Earthquake Rupture Forecast (UCERF 3). Bulletin of the Seismological Society of America, 105(2a), 511-543. doi: 10.1785/0120140093. SCEC Contribution 2066
Scharer, K. M., Weldon, R. J., Streig, A. R., & Fumal, T. E. (2014). Paleoearthquakes at Frazier Mountain, California delimit extent and frequency of past San Andreas Fault ruptures along 1857 trace. Geophysical Research Letters, 41(13), 4527-4534. doi: 10.1002/2014GL060318. SCEC Contribution 2002
Scharer, K. M., Fumal, T. E., Weldon, R. J., & Streig, A. R. (2014). Photomosaics and Event Evidence from the Frazier Mountain Paleoseismic Site, Trench 1, Cuts 1–4, San Andreas Fault, Southern California (2007–2009). , : . SCEC Contribution 1912
Scharer, K. M., Weldon, R. J., Streig, A. R., & Fumal, T. E. (2014). Paleoearthquakes at Frazier Mountain, California delimit extent and frequency of past San Andreas Fault ruptures along 1857 trace. Geophysical Research Letters, 41(13), 4527-4534. SCEC Contribution 1909
Field, E. H., Biasi, G. P., Bird, P., Dawson, T., Felzer, K. R., Jackson, D. D., Johnson, K. M., Jordan, T. H., Madden Madugo, C. L., Michael, A. J., Milner, K. R., Page, M. T., Parsons, T., Powers, P. M., Shaw, B. E., Thatcher, W. R., Weldon, R. J., & Zeng, Y. (2013). Uniform California Earthquake Rupture Forecast, Version 3 (UCERF3)—The Time-Independent Model (1165). , : . SCEC Contribution 1792
McGill, S. F., Kendrick, K. J., Owen, L. A., & Weldon, R. J. (2013). Latest Pleistocene and Holocene slip rate for the San Bernardino strand of the San Andreas fault, Plunge Creek, Southern California: Implications for strain partitioning within the southern San Andreas fault system for the last ∼35 k.y.. Geological Society of America Bulletin, 125(1-2), 48-72. doi: 10.1130/B30647.1. SCEC Contribution 1233
McGill, S. F., Owen, L. A., Weldon, R. J., & Kendrick, K. J. (2012). Latest Pleistocene and Holocene Slip Rate for the San Bernardino Strand of the San Andreas Fault, Plunge Creek Southern California: Implications for Strain Partitioning within the Southern San Andreas Fault System for the last 32 ka. Geological Society of America Bulletin, 125(1-2), 48-72. doi: 10.1130/B30647.1. SCEC Contribution 1596
Biasi, G. P., Weldon, R. J., & Scharer, K. M. (2011). Rupture length and paleo-magnitude estimates from point measurements of displacement - a model-based approach. Geological Society of America Special Paper, 479, 195-204. SCEC Contribution 944
Philibosian, B., Fumal, T. E., & Weldon, R. J. (2011). San Andreas Fault Earthquake Chronology and Lake Cahuilla History at Coachella, California. Bulletin of the Seismological Society of America, 101(1), 13-38. doi: 10.1785/0120100050. SCEC Contribution 8055
Rymer, M. J., Treiman, J. A., Kendrick, K. J., Lienkaemper, J. J., Weldon, R. J., Bilham, R., Wei, M., Fielding, E. J., Hernandez, J. L., Olson, B., Irvine, P., Knepprath, N., Sickler, R. R., Tong, X., & Siem, M. E. (2011). Triggered surface slips in southern California associated with the 2010 El Mayor-Cucapah, Baja California, Mexico, earthquake. , : . SCEC Contribution 7325
Scharer, K. M., Biasi, G. P., & Weldon, R. J. (2011). A reevaluation of the Pallett Creek earthquake chronology based on new AMS radiocarbon dates, San Andreas fault, California. Journal of Geophysical Research: Solid Earth,. doi: 10.1029/2010JB008099. SCEC Contribution 1565
McGill, S. F., Owen, L. A., Weldon, R. J., & Kendrick, K. J. (2011). Latest Pleistocene Slip Rate of the San Bernardino Strand of the San Andreas Fault at Plunge Creek in Highland, California. , : Inland Empire Chapter, Assoc. of Environ. and Eng. Geologist. SCEC Contribution 1479
Behr, W. M., Rood, D. H., Fletcher, K. E., Guzman, N. E., Finkel, R., Hanks, T. C., Hudnut, K. W., Kendrick, K. J., Platt, J. P., Sharp, W. D., Weldon, R. J., & Yule, D. (2010). Uncertainties in slip rate estimates for the Mission Creek strand of the southern San Andreas Fault at Biskra Palms Oasis, southern California. Geological Society of America Bulletin,. SCEC Contribution 1292
Scharer, K. M., Biasi, G. P., Weldon, R. J., & Fumal, T. E. (2010). Quasi-periodic recurrence of large earthquakes on the southern San Andreas fault. Geology, 555-558. SCEC Contribution 1291
Field, E. H., Dawson, T., Felzer, K. R., Frankel, A., Gupta, V., Jordan, T. H., Parsons, T., Petersen, M. D., Stein, R. S., Weldon, R. J., & Wills, C. J. (2009). Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2). Bulletin of the Seismological Society of America, 99(4), 2053-2107. doi: 10.1785/0120080049. SCEC Contribution 2109
Biasi, G. P., & Weldon, R. J. (2009). San Andreas Fault Rupture Scenarios From Multiple Paleoseismic Records: Stringing Pearls. Bulletin of the Seismological Society of America, 99(2A), 471-498. doi: 10.1785/0120080287. SCEC Contribution 1249
Field, E. H., Dawson, T., Felzer, K. R., Frankel, A., Gupta, V., Jordan, T. H., Parsons, T., Petersen, M. D., Stein, R. S., Weldon, R. J., & Wills, C. J. (2008). The Uniform California Earthquake Rupture Forecast, Version 2 (UCERF 2) (1437). , : . SCEC Contribution 1138
Scharer, K. M., Weldon, R. J., Fumal, T. E., & Biasi, G. P. (2007). Paleoearthquakes on the Southern San Andreas Fault, Wrightwood, California, 3000 to 1500 B.C.: A New Method for Evaluating Paleoseismic Evidence and Earthquake Horizons. Bulletin of the Seismological Society of America, 97(4), 1054-1093. doi: 10.1785/0120060137. SCEC Contribution 1055
Biasi, G. P., & Weldon, R. J. (2006). Estimating Surface Rupture Length and Magnitude of Paleoearthquakes from Point Measurements of Rupture Displacement. Bulletin of the Seismological Society of America, 96(5), 1612-1623. doi: 10.1785/0120040172. SCEC Contribution 785
Weldon, R. J., Fumal, T. E., Biasi, G. P., & Scharer, K. M. (2005). Past and Future Earthquakes on the San Andreas Fault. Science, 308(5724), 966-967. doi: 10.1126/science.1111707. SCEC Contribution 1024
Weldon, R. J., Scharer, K. M., Fumal, T. E., & Biasi, G. P. (2004). Wrightwood and the Earthquake Cycle: What a Long Recurrence Record Tells us about how Faults Work. GSA Today, 14(9), 4-10. doi: 10.1130/1052-5173(2004)014<4:WATECW>2.0.CO;2. SCEC Contribution 1025
Weldon, R. J., Fumal, T. E., Powers, T. J., Pezzopane, S. K., Scharer, K. M., & Hamilton, J. (2002). Structure and Earthquake Offsets on the San Andreas Fault at the Wrightwood, California, Paleoseismic Site. Bulletin of the Seismological Society of America, 92(7), 2704-2725. doi: 10.1785/0120000612. SCEC Contribution 1026
Palmer, R., Weldon, R. J., & Humphreys, E. D. (1995). Earthquake Recurrence on the Southern San Andreas Modulated by Fault-Normal Stress. Geophysical Research Letters, 22(5), 535-538. doi: 10.1029/94GL03393. SCEC Contribution 293
Humphreys, E. D., & Weldon, R. J. (1994). Deformation across the Western United States: A Local Estimate of Pacific-North America Transform Deformation. Journal of Geophysical Research, 99(B10), 19975-20010. SCEC Contribution 292
Last updated Sep 19, 2024.
