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Denali-Totschunda fault zone

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Journal Article
Published: 01 December 2004
Bulletin of the Seismological Society of America (2004) 94 (6B): S132–S144.
... seismicity (depths <30 km) along the Denali fault system will focus on four subdivisions of the fault zone (West Denali, Muldrow, Central Alaska Range, and Denali-Totschunda) as indicated in Figure 1a . This portion of the Denali fault zone extends from 154° to 150° W. It includes the Farewell...
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Journal Article
Published: 05 November 2013
Bulletin of the Seismological Society of America (2013) 103 (6): 3094–3103.
... and deconvolution of teleseismic bodywaves , Geophys. J. Roy. Astron. Soc. 47 , 151 – 177 . Doser D. I. ( 2004 ). Seismicity of the DenaliTotschunda Fault Zone in Central Alaska (1912–1988) and its relation to the 2002 Denali fault earthquake sequence , Bull. Seismol. Soc. Am. 94 , no.  6B...
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Journal Article
Published: 01 December 2004
Bulletin of the Seismological Society of America (2004) 94 (6B): S202–S213.
... failure criterion outside the fault zones. Our results show that, for the case 4, the rupture proceeds rapidly along the Totschunda fault with almost no continuation on the Denali fault. Figure 10 shows slip velocity along both the Denali and Totschunda faults. Again, beyond the Totschunda fault...
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Journal Article
Published: 01 December 2004
Bulletin of the Seismological Society of America (2004) 94 (6B): S23–S52.
... by local ice fabric. Finally, slip transferred southeastward onto the Totschunda fault and continued for another 66 km where dextral offsets average 1.6–1.8 m. The transition from the Denali fault to the Totschunda fault occurs over a complex 25-km-long transfer zone of right-slip and normal fault traces...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 01 June 2015
Lithosphere (2015) 7 (3): 235–246.
... to isolate the important boundary conditions that control transpressional orogenic growth. The Denali fault system is widely recognized as transpressional due to the presence of the Denali fault, a major, active, right-lateral fault, and subparallel zones of thrust faults and fault-related folding along both...
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Journal Article
Published: 01 December 2004
Bulletin of the Seismological Society of America (2004) 94 (6B): S145–S155.
.... The results indicate that analysis of Coulomb stress transfer from the dominant earthquake in a region is a potentially powerful tool in assessing time-varying earthquake hazard. Modeled Coulomb stress increases on the northern Denali and Totschunda faults from the great 1964 earthquake coincide with zones...
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Journal Article
Journal: AAPG Bulletin
Published: 01 December 1970
AAPG Bulletin (1970) 54 (12): 2502.
..., which is an ancient subduction zone, has been reactivated as a ridge-arc dextral transform fault, probably during the early Pliocene in response to a change in the direction of spreading in the North Pacific oceanic plate. The Totschunda fault system, which diverges from the Denali structure near 144°W...
Journal Article
Published: 01 December 2004
Bulletin of the Seismological Society of America (2004) 94 (6B): S214–S233.
... on the Susitna Glacier thrust fault, and after a pause, propagated onto the strike-slip Denali fault. Approximately 216 km to the east, the rupture abandoned the Denali fault in favor of the more southwesterly directed Totschunda fault. Three-dimensional dynamic models of this event indicate that the abandonment...
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Journal Article
Published: 01 October 2006
Bulletin of the Seismological Society of America (2006) 96 (5): 1662–1674.
...Charles G. Bufe Abstract Pre-2002 tectonic loading and Coulomb stress transfer are modeled along the rupture zone of the M 7.9 Denali fault earthquake ( dfe ) and on adjacent segments of the right-lateral DenaliTotschunda fault system in central Alaska, using a three-dimensional boundary-element...
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Journal Article
Journal: Geosphere
Published: 09 August 2017
Geosphere (2017) 13 (5): 1445–1463.
...Peter J. Haeussler; Ari Matmon; David P. Schwartz; Gordon G. Seitz Abstract The neotectonics of southern Alaska (USA) are characterized by a several hundred kilometers–wide zone of dextral transpressional that spans the Alaska Range. The Denali fault system is the largest active strike-slip fault...
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Series: AAPG Memoir, AAPG Memoir
Published: 01 January 1973
DOI: 10.1306/M19375C45
EISBN: 9781629812199
... against the continental margin. The Denali fault, which represents an ancient subduction zone, was reactivated as a ridge-arc dexfral transform fault—probably during the early Pliocene—in response to a change in the direction of spreading in the North Pacific oceanic plate. The Totschunda fault system...
Journal Article
Journal: Geology
Published: 01 August 2006
Geology (2006) 34 (8): 645–648.
... quantitative late Pleistocene–Holocene slip rates on the Denali fault system from dating offset geomorphic features. Analysis of cosmogenic 10 Be concentrations in boulders ( n = 27) and sediment ( n = 13) collected at seven sites, offset 25–170 m by the Denali and Totschunda faults, gives average ages...
FIGURES
Journal Article
Published: 01 December 2004
Bulletin of the Seismological Society of America (2004) 94 (6B): S156–S174.
... to the 2002 sequence is predominately strike slip. Along the central part of the rupture zone, the orientations of the least- and intermediate-stress axes are reversed after the 2002 earthquake sequence. The maximum compressive stresses along the Denali fault rotate clockwise by up to 35°; the greatest...
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Journal Article
Published: 01 December 2004
Bulletin of the Seismological Society of America (2004) 94 (6B): S278–S292.
... and later ruptured a 300-km-long segment along the Denali and Totschunda faults with a right-lateral strike-slip mechanism ( M w 7.7). In contrast, the 2001 Kunlun fault earthquake nucleated near an extensional step-over with a subevent pair consisting of 30-km-long strike-slip ( M w 6.9) event and 40-km...
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Journal Article
Published: 01 December 2004
Bulletin of the Seismological Society of America (2004) 94 (6B): S234–S255.
... started with an oblique thrust subevent (subevent #1) with an east–west-striking, north-dipping nodal plane consistent with the observed surface rupture on the Susitna Glacier fault. Inversion of the remainder of the waveforms (0.02–0.5 Hz) for moment release along the Denali and Totschunda faults shows...
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Journal Article
Journal: Geosphere
Published: 10 September 2019
Geosphere (2019) 15 (5): 1508–1538.
... commenced due to Yakutat microplate subduction initiation. The WA occurs within a transition zone between Aleutian subduction to the west and dextral strike-slip tectonics along the Queen Charlotte–Fairweather and Denali–Duke River fault systems to the east. New 40 Ar/ 39 Ar geochronology of bedrock shows...
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Image
Plot of slip velocity along the <b>Denali</b> and <b>Totschunda</b> <b>fault</b> segments for Ψ ...
Published: 01 December 2004
Figure 7. Plot of slip velocity along the Denali and Totschunda fault segments for Ψ = 70°; ν r = 0.6 c s . Slip velocity variation along the Totschunda fault is projected onto the Denali fault. The Totschunda fault begins at 5 X/R 0 = 58. ν r , c s , R 0 , μ , ν , , and c p
Image
Plot of slip velocity along the <b>Denali</b> and <b>Totschunda</b> <b>fault</b> segments for Ψ ...
Published: 01 December 2004
Figure 7. Plot of slip velocity along the Denali and Totschunda fault segments for Ψ = 70°; ν r = 0.6 c s . Slip velocity variation along the Totschunda fault is projected onto the Denali fault. The Totschunda fault begins at 5 X/R 0 = 58. ν r , c s , R 0 , μ , ν , , and c p
Image
Variation of the rupture velocity along the <b>Denali</b> and the <b>Totschunda</b> <b>fault</b>...
Published: 01 December 2004
Figure 12. Variation of the rupture velocity along the Denali and the Totschunda fault segments for Ψ = 70°; ν r = 0.6 c s and Ψ = 70°; ν r = 0.9 c s cases. ν r , c s , R 0 , and c p represent the rupture velocity near the branching point, the S -wave speed of the medium
Image
Photographs of features of the <b>Denali</b> and <b>Totschunda</b> <b>fault</b> rupture, where “...
Published: 01 December 2004
, on the west side of Augustana Pass. (D) Aerial view of large sag pond in the transfer zone between the Denali and Totschunda faults at km 235.5. White dashed line shows locations of fault traces. (E) Aerial view of multiple offset gullies near Augustana Pass (km 80). Arrows point along fault trace