@article {2999,
	title = {Geomorphic expression and slip rate of the Fairweather fault, southeast Alaska, and evidence for predecessors of the 1958 rupture},
	journal = {Geosphere},
	volume = {17},
	year = {2021},
	month = {05/2021},
	pages = {711 - 738},
	abstract = {Active traces of the southern Fairweather fault were revealed by light detection and ranging (lidar) and show evidence for transpressional deformation between North America and the Yakutat block in southeast Alaska. We map the Holocene geomorphic expression of tectonic deformation along the southern 30 km of the Fairweather fault, which ruptured in the 1958 moment magnitude 7.8 earthquake. Digital maps of surficial geology, geomorphology, and active faults illustrate both strike-slip and dip-slip deformation styles within a 10{\textdegree}{\textendash}30{\textdegree} double restraining bend where the southern Fairweather fault steps offshore to the Queen Charlotte fault. We measure offset landforms along the fault and calibrate legacy 14C data to reassess the rate of Holocene strike-slip motion (>=49 mm/yr), which corroborates published estimates that place most of the plate boundary motion on the Fairweather fault. Our slip-rate estimates allow a component of oblique-reverse motion to be accommodated by contractional structures west of the Fairweather fault consistent with geodetic block models. Stratigraphic and structural relations in hand-dug excavations across two active fault strands provide an incomplete paleoseismic record including evidence for up to six surface ruptures in the past 5600 years, and at least two to four events in the past 810 years. The incomplete record suggests an earthquake recurrence interval of >=270 years{\textemdash}much longer than intervals \&lt;100 years implied by published slip rates and expected earthquake displacements. Our paleoseismic observations and map of active traces of the southern Fairweather fault illustrate the complexity of transpressional deformation and seismic potential along one of Earth{\textquoteright}s fastest strike-slip plate boundaries.},
	isbn = {1553-040X},
	doi = {10.1130/GES02299.1},
	url = {https://doi.org/10.1130/GES02299.1},
	author = {Witter, Robert C. and Bender, Adrian M. and Scharer, Katherine M. and DuRoss, Christopher B. and Haeussler, Peter J. and Lease, Richard O.}
}
@article {2929,
	title = {A maximum rupture model for the central and southern Cascadia subduction zone{\textemdash}reassessing ages for coastal evidence of megathrust earthquakes and tsunamis},
	journal = {Quaternary Science Reviews},
	volume = {261},
	year = {2021},
	month = {Jan-06-2021},
	pages = {106922},
	abstract = {A new history of great earthquakes (and their tsunamis) for the central and southern Cascadia subduction zone shows more frequent (17 in the past 6700 yr) megathrust ruptures than previous coastal chronologies. The history is based on along-strike correlations of Bayesian age models derived from evaluation of 554 radiocarbon ages that date earthquake evidence at 14 coastal sites. We reconstruct a history that accounts for all dated stratigraphic evidence with the fewest possible ruptures by evaluating the sequence of age models for earthquake or tsunami contacts at each site, comparing the degree of temporal overlap of correlated site age models, considering evidence for closely spaced earthquakes at four sites, and hypothesizing only maximum-length megathrust ruptures. For the past 6700 yr, recurrence for all earthquakes is 370e420 yr. But correlations suggest that ruptures at-1.5 ka and-1.1 ka were of limited extent (<400 km). If so, post-3-ka recurrence for ruptures extending throughout central and southern Cascadia is 510e540 yr. But the range in the times between earthquakes is large: two instances may be-50 yr, whereas the longest are-550 and-850 yr. The closely spaced ruptures about 1.6 ka may illustrate a pattern common at subduction zones of a long gap ending with a great earthquake rupturing much of the subduction zone, shortly followed by a rupture of more limited extent. The ruptures of limited extent support the continued inclusion of magnitude-8 earthquakes, with longer ruptures near magnitude 9, in assessments of seismic hazard in the region. },
	issn = {02773791},
	doi = {10.1016/j.quascirev.2021.106922},
	url = {https://apps.webofknowledge.com/InboundService.do?product=WOS\&Func=Frame\&DestFail=http\%3A\%2F\%2Fwww.webofknowledge.com\&SrcApp=search\&SrcAuth=Alerting\&SID=6DMZZppDlBSzMpeHDG2\&customersID=Alerting\&mode=FullRecord\&IsProductCode=Yes\&AlertId=4d48b20a-7d27-4fa2-},
	author = {Nelson, Alan R. and DuRoss, Christopher B. and Witter, Robert C. and Kelsey, Harvey M. and Engelhart, Simon E. and Mahan, Shannon A. and Gray, Harrison J. and Hawkes, Andrea D. and Horton, Benjamin P. and Padgett, Jason S.}
}
@article {2749,
	title = {Holocene earthquake history and slip rate of the southern Teton fault, Wyoming, USAAbstract},
	journal = {GSA Bulletin},
	volume = {132},
	year = {2020},
	month = {Jan-07-2020},
	pages = {1566 - 1586},
	abstract = {The 72-km-long Teton normal fault bounds the eastern base of the Teton Range in northwestern Wyoming, USA. Although geomorphic surfaces along the fault record latest Pleistocene to Holocene fault movement, the postglacial earthquake history of the fault has remained enigmatic. We excavated a paleoseismic trench at the Buffalo Bowl site along the southernmost part of the fault to determine its Holocene rupture history and slip rate. At the site, \~{}6.3 m of displacement postdates an early Holocene (ca. 10.5 ka) alluvial-fan surface. We document evidence of three surface-faulting earthquakes based on packages of scarp-derived colluvium that postdate the alluvial-fan units. Bayesian modeling of radiocarbon and luminescence ages yields earthquake times of ca. 9.9 ka, ca. 7.1 ka, and ca. 4.6 ka, forming the longest, most complete paleoseismic record of the Teton fault. We integrate these data with a displaced deglacial surface 4 km NE at Granite Canyon to calculate a postglacial to mid-Holocene (14.4{\textendash}4.6 ka) slip rate of \~{}1.1 mm/yr. Our analysis also suggests that the postglacial to early Holocene (14.4{\textendash}9.9 ka) slip rate exceeds the Holocene (9.9{\textendash}4.6 ka) rate by a factor of \~{}2 (maximum of 3); however, a uniform rate for the fault is possible considering the 95\% slip-rate errors. The \~{}5 k.y. elapsed time since the last rupture of the southernmost Teton fault implies a current slip deficit of \~{}4{\textendash}5 m, which is possibly explained by spatially/temporally incomplete paleoseismic data, irregular earthquake recurrence, and/or variable per-event displacement. Our study emphasizes the importance of minimizing slip-rate uncertainties by integrating paleoseismic and geomorphic data sets and capturing multiple earthquake cycles.},
	issn = {0016-7606},
	doi = {10.1130/B35363.110.1130/2020020},
	url = {https://pubs.geoscienceworld.org/gsa/gsabulletin/article/132/7-8/1566/575767/Holocene-earthquake-history-and-slip-rate-of-the},
	author = {DuRoss, Christopher B. and Gold, Ryan D. and Briggs, Richard W. and Delano, Jaime E. and Ostenaa, Dean A. and Zellman, Mark S. and Cholewinski, Nicole and Wittke, Seth J. and Mahan, Shannon A.}
}
@article {2762,
	title = {Holocene Rupture History of the Central Teton Fault at Leigh Lake, Grand Teton National Park, WyomingABSTRACT},
	journal = {Bulletin of the Seismological Society of America},
	volume = {110},
	year = {2020},
	month = {Jan-02-2020},
	pages = {67 - 82},
	abstract = {Prominent scarps on Pinedale glacial surfaces along the eastern base of the Teton Range confirm latest Pleistocene to Holocene surface-faulting earthquakes on the Teton fault, but the timing of these events is only broadly constrained by a single previous paleoseismic study. We excavated two trenches at the Leigh Lake site near the center of the Teton fault to address open questions about earthquake timing and rupture length. Structural and stratigraphic evidence indicates two surface-faulting earthquakes at the site that postdate deglacial sediments dated by radiocarbon and optically stimulated luminescence to \~{}10{\textendash}11  ka⁠. Earthquake LL2 occurred at \~{}10.0  ka (9.7{\textendash}10.4 ka; 95\% confidence range) and LL1 at \~{}5.9  ka (4.8{\textendash}7.1 ka; 95\%). LL2 predates an earthquake at \~{}8  ka identified in the previous paleoseismic investigation at Granite Canyon. LL1 corresponds to the most recent Granite Canyon earthquake at \~{}4.7{\textendash}7.9  ka (95\% confidence range). Our results are consistent with the previously documented long-elapsed time since the most recent Teton fault rupture and expand the fault{\textquoteright}s earthquake history into the early Holocen},
	issn = {0037-1106},
	doi = {10.1785/0120190129},
	url = {https://pubs.geoscienceworld.org/ssa/bssa/article/110/1/67/575484/Holocene-Rupture-History-of-the-Central-Teton},
	author = {Zellman, Mark S. and DuRoss, Christopher B. and Thackray, Glenn D. and Personius, Stephen F. and Reitman, Nadine G. and Mahan, Shannon A. and Brossy, Cooper C.}
}
@article {2747,
	title = {Four Major Holocene Earthquakes on the Reelfoot Fault Recorded by Sackungen in the New Madrid Seismic Zone, USA},
	journal = {Journal of Geophysical Research: Solid Earth},
	volume = {124},
	year = {2019},
	month = {Jun-03-2020},
	pages = {3105 - 3126},
	abstract = {Three sequences of well-documented, major ~M7+ earthquakes (1811{\textendash}1812, ~1450, and ~900 CE) in the New Madrid seismic zone, USA, contribute significantly to seismic hazard in the region. However, it is unknown whether this <550-year recurrence interval has been constant throughout the Holocene given limited geomorphic evidence of prior earthquakes. We extend the record of paleoearthquakes along the Reelfoot fault via investigation of ridgetop gravitational failure features, interpreted as sackungen. The sackungen occur in bluffs along the eastern margin of the Mississippi River floodplain and are concentrated near (<15 km) the southwest dipping Reelfoot reverse fault. A paleoseismic trench excavated across sackungen at the Paw Paw site exposed four packages of colluvial sediment that postdate 30- to 11-ka Peoria Loess. We interpret the colluvial packages to have been deposited following episodic failure of the sackungen as a result of strong ground motions from the following sequence of earthquakes: event 4, 1640 {\textpm} 1730 BCE; event 3, 270 {\textpm} 670 CE; event 2, 1430 {\textpm} 380 CE; and event 1, 1810 {\textpm} 50 CE (2 sigma). Event timing corresponds to previously documented earthquakes and represents the longest archive of paleoearthquakes on the Reelfoot fault. If the trenched sackungen record all major Reelfoot fault earthquakes, our observations in combination with prior investigations indicate a period of quiescence from at least 11 to 4.4 ka, followed by four major seismic events culminating in the 1811{\textendash}1812 CE sequence. This clustered earthquake recurrence pattern helps place bounds on seismic hazard and geodynamic models in the New Madrid seismic zone.},
	issn = {2169-9313},
	doi = {10.1029/2018JB016806},
	url = {https://onlinelibrary.wiley.com/doi/abs/10.1029/2018JB016806},
	author = {Gold, Ryan D. and DuRoss, Christopher B. and Delano, Jaime E. and Jibson, Randall W. and Briggs, Richard W. and Mahan, Shannon A. and Williams, Robert A. and Corbett, D. Reide}
}
@article {2622,
	title = {Combining Conflicting Bayesian Models to Develop Paleoseismic Records: An Example from the Wasatch Fault Zone, Utah},
	journal = {Bulletin of the Seismological Society of America},
	year = {2018},
	month = {Feb-06-2020},
	abstract = {Bayesian statistical analyses of paleoseismic data result in the probabilistic determination of earthquake times using geochronological data evaluated in the context of a stratigraphic model. However, a fundamental problem in paleoseismology is how to use the Bayesian approach to model sparse and/or conflicting geochronological datasets, such as those derived from sites exhibiting episodic sedimentary and pedogenic processes in moderate- to high-energy environments (e.g., a normal-faulted alluvial fan). Using paleoseismic data for the Corner Canyon site on the Salt Lake City segment of the Wasatch fault zone (Utah), we develop an approach by which multiple Bayesian models are combined to generate an earthquake history at a site. This approach accommodates mutually exclusive interpretations of the geochronological data and thereby limits the influence of sparse data, stratigraphically inconsistent ages, or a single, subjective model interpretation. For the Corner Canyon site, we integrate four OxCal Bayesian models to generate a chronology of six events between \~{}4.8 and \~{}0.5  ka. Late Holocene (post-5 ka) mean recurrence and vertical slip-rate estimates are \~{}0.9  ky (0.7{\textendash}1.0 ky; 95\% confidence) and 1.1  mm/yr (0.8{\textendash}1.7  mm/yr range), respectively. Although our method increases the uncertainty in the timing of individual earthquakes, it more objectively accounts for potential geochronological errors and different interpretations of stratigraphic age control. By relaxing the need to select a single age model, our approach yields more accurate earthquake-timing results that will better facilitate evaluations of along-fault event correlation and earthquake rupture length.},
	issn = {0037-1106},
	doi = {10.1785/0120170302},
	url = {https://pubs.geoscienceworld.org/ssa/bssa/article/536312/Combining-Conflicting-Bayesian-Models-to-Develop},
	author = {DuRoss, Christopher B. and Bennett, Scott E. K. and Briggs, Richard W. and Personius, Stephen F. and Gold, Ryan D. and Reitman, Nadine G. and Hiscock, Adam I. and Mahan, Shannon A.}
}
