@article {2695,
	title = {Neotectonic and Paleoseismic Analysis of the Northwest Extent of Holocene Surface Deformation along the Meers Fault, OklahomaABSTRACT},
	journal = {Bulletin of the Seismological Society of America},
	volume = {110},
	year = {2020},
	month = {Jan-02-2020},
	pages = {49 - 66},
	abstract = {The Meers fault (Oklahoma) is one of few seismogenic structures with evidence for Holocene surface rupture in the stable continental region of North America. The 37-kilometer-long southeast section of the full 54-kilometer-long Meers fault is interpreted to be Holocene active. The 17-kilometer-long northwest section is considered Quaternary active, but not Holocene active.We reevaluate surface expression and earthquake timing of the northwest Meers fault to improve seismic source characterization.We use airborne light detection and ranging and historical stereo paired aerial photos to evaluate the fault scarp and local fault zone geomorphology. In the northwest, complex surface deformation includes fault splays, subtle monoclinal warping, and a minor change in fault strike. We interpret that the along strike transition from surface faulting on the southeast Meers fault to surface folding on the northwest Meers fault occurs at the lithologic contact between Permian Post Oak conglomerate and Hennessey shale. We excavated a paleoseismic trench to evaluate the timing of surface-deforming earthquakes on the northwest section of the fault. The excavation revealed weathered Permian Hennessey shale and an \~{}1{\textendash}2-meter-thick veneer of Holocene alluvial deposits that were progressively deformed during two surface-folding earthquakes likely related to blind fault rupture beneath the site. Repeated onlapping to overlapping stratigraphic sequences and associated unconformities are intimately related to folding events along the monocline. OxCal paleoearthquake age modeling indicates that earthquakes occurred 4704{\textendash}3109 yr B.P. and 5955{\textendash}4744 yr B.P., and that part of the northwest section of the Meers fault is Holocene active. We find the Holocene-active section of the Meers fault should be lengthened 6.1 km to the northwest, to a total Holocene-active fault length of 43 km. Empirical scaling relationships between surface rupture length and magnitude reveal that the fault could generate an Mw 7.0 earthquake.},
	issn = {0037-1106},
	doi = {10.1785/0120180148},
	url = {https://pubs.er.usgs.gov/publication/70208517},
	author = {Hornsby, Kristofer T. and Streig, Ashley R. and Bennett, Scott E. K. and Chang, Jefferson C. and Mahan, Shannon}
}
@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.}
}
