@article {1362, title = {Field and laboratory data from an earthquake history study of scarps of the Lake Creek-Boundary Creek fault between the Elwha River and Siebert Creek, Clallam County, Washington}, year = {2007}, note = {id: 433}, month = {2007}, author = {Nelson, A. R. and Personius, S. F. and Buck, Jason and Bradley, L. A. and Wells, R. E. and Schermer, E. R.} } @article {723, title = {Evidence for Late Holocene earthquakes on the Utsalady Point Fault, northern puget lowland, Washington}, journal = {Bulletin of the Seismological Society of America}, volume = {94}, year = {2004}, note = {887giTimes Cited:18Cited References Count:46}, month = {Dec}, pages = {2299-2316}, abstract = {Trenches across the Utsalady Point fault in the northern Puget Lowland of Washington reveal evidence of at least one and probably two late Holocene earthquakes. The "Teeka"{\textquoteright} and "Duffers" trenches were located along a 1.4-km-long. 1- to 4-m-high, northwest-trending, southwest-facing. topographic scarp recognized from Airborne Laser Swath Mapping. Glaciomarine drift exposed in the trenches reveals evidence of about 95 to 150 cm of vertical and 200 to 220 cm of left-lateral slip in the Teeka trench. Radiocarbon ages from a buried soil A horizon and overlying slope colluvium alone, with the historical record of earthquakes suggest that this faulting occurred 100 to 400 calendar years B.P. (A.D. 1550 to 1850). In the Duffers trench, 370 to 450 cm of vertical separation is accommodated by faulting (similar to210 cm) and folding (similar to160 to 240 cm), with probable but undetermined amounts of lateral slip. Stratigraphic relations and radiocarbon ages from buried soil, colluvium. and fissure fill in the hanging wall suggest the deformation at Duffers is most likely from two earthquakes that occurred between 100 to 500 and 1100 to 2200 calendar years B.P., but deformation during a single earthquake is also possible. For the two-earthquake hypothesis, deformation at Teeka trench in the first event involved folding but not faulting. Regional relations suggest that the earthquake(s) were M greater than or equal to similar to6.7 and that offshore rupture may have produced tsunamis. Based on this investigation and related recent studies, the maximum recurrence interval for large ground-rupturing crustal-fault earthquakes in the Puget Lowland is about 400 to 600 years or less.}, issn = {0037-1106}, doi = {10.1785/0120040050}, author = {Johnson, S. Y. and Nelson, A. R. and Personius, S. F. and Wells, R. E. and Kelsey, H. N. and Sherrod, B. L. and Okumura, K. and Koehler, R. and Witter, R. C. and Bradley, L. A. and Harding, D. J.} } @article {1361, title = {Field and laboratory data from an earthquake history study of the Waterman Point fault, Kitsap County, Washington}, year = {2003}, note = {id: 429}, month = {2003}, author = {Nelson, A. R. and Johnson, S. Y. and Kelsey, S. K. and Wells, R. E. and Sherrod, B. L. and Bradley, L. A. and Okumura, K. and Bogar, R.} } @article {733, title = {Late Holocene earthquakes on the Toe Jam Hill fault, Seattle fault zone, Bainbridge Island, Washington}, journal = {Geological Society of America Bulletin}, volume = {115}, year = {2003}, note = {740qwTimes Cited:41Cited References Count:53}, month = {Nov}, pages = {1388-1403}, abstract = {Five trenches across a Holocene fault scarp yield the first radiocarbon-measured earthquake recurrence intervals for a crustal fault in western Washington. The scarp, the first to be revealed by laser imagery, marks the Toe Jam Hill fault, a north-dipping backthrust to the Seattle fault. Folded and faulted strata, liquefaction features, and forest soil A horizons buried by hanging-wall-collapse colluvium record three, or possibly four, earthquakes between 2500 and 1000 yr ago. The most recent earthquake is probably the 1050-1020 cal. (calibrated) yr B.P. (A.D. 900930) earthquake that raised marine terraces and triggered a tsunami in Puget Sound. Vertical deformation estimated from strati-graphic and surface offsets at trench sites suggests late Holocene earthquake magnitudes near M7, corresponding to surface ruptures >36 km long. Deformation features recording poorly understood latest Pleistocene earthquakes suggest that they were smaller than late Holocene earthquakes. Postglacial earthquake recurrence intervals based on 97 radiocarbon ages, most on detrital charcoal, range from similar to12,000 yr to as little as a century or less; corresponding fault-slip rates are 0.2 mm/ yr for the past 16,000 yr and 2 mm/yr for the past 2500 yr. Because the Toe Jam Hill fault is a backthrust to the Seattle fault, it may not have ruptured during every earthquake on the Seattle fault. But the earthquake history of the Toe Jam Hill fault is at least a partial proxy for the history of the rest of the Seattle fault zone.}, issn = {0016-7606}, doi = {10.1130/B25262.1}, author = {Nelson, A. R. and Johnson, S. Y. and Kelsey, H. M. and Wells, R. E. and Sherrod, B. L. and Pezzopane, S. K. and Bradley, L. A. and Koehler, R. D. and Bucknam, R. C.} } @article {1358, title = {Map and data for Quaternary faults and folds in Washington State}, year = {2003}, note = {id: 997}, month = {2003}, author = {Lidke, D. J. and Johnson, S. Y. and McCory, P. A. and Personius, S. F. and Nelson, A. R. and Dart, R. L. and Bradley, L. A. and Haller, K. M. and Machette, M. N.} } @article {1357, title = {Maps and data from a trench investigation of the Utsalady Point fault, Whidbey Island, Washington}, year = {2003}, note = {id: 996}, month = {2003}, author = {Johnson, S. Y. and Nelson, A. R. and Personius, S. F. and Wells, R. E. and Kelsey, H. M. and Sherrod, B. L. and Okumura, K. and Koehler, R., III and Witter, R. C. and Bradley, L. A. and Harding, D. J.} } @article {2107, title = {Field and laboratory data from an earthquake history study of the Toe Jam Hill fault, Bainbridge Island, Washington}, journal = {U.S. Geological Survey Open-File Report}, volume = {02-60}, year = {2002}, note = {id: 428}, month = {2002}, pages = {37 p.}, author = {Nelson, A. R. and Johnson, S. Y. and Wells, R. E. and Kelsey, H. M. and Pezzopane, S. K. and Sherrod, B. L. and Bradley, L. A. and Iii, Koehler R. D. and Bucknam, R. C. and Haugerud, R. A. and LaPrade, W. T.} } @article {2106, title = {Field and Laboratory data from an earthquake history study of the Toe Jam Hill fault, Bainbridge Island, Washington}, journal = {U.S. Geological Survey Open-File Report 02-60}, year = {2002}, note = {id: 259}, month = {2002}, pages = {2 plates and 37 pages}, author = {Nelson, A. R. and Johnson, S. Y. and Wells, R. E. and Pezzopane, S. K. and Kelsey, H. M. and Sherrod, B. L. and Bradley, L. A. and Koehler, R. D., III and Bucknam, R. C. and Haugerud, R. A. and LaPrade, W. T.} } @article {2181, title = {Postglacial and Late Holocene earthquakes on the Toe Jam strand of the Seattle fault, Bainbridge Island Washington}, journal = {Geological Society of America Abstracts with Programs}, volume = {32}, year = {2000}, note = {id: 258}, month = {2000}, pages = {A-58}, author = {Nelson, A. R. and Johnson, S. Y. and Pezzopane, S. K. and Wells, R. E. and Kelsey, H. M. and Sherrod, B. L. and Koehler, R. D. and Bradley, L. A. and Bucknam, R. C. and LaPrade, W. T. and Cox, J. W. and Narwold, C. F.} }