scholarly journals Paleoseismic and Slip-Rate Observations along the Honey Lake Fault Zone, Northeastern California, USA

2008 ◽  
Vol 98 (4) ◽  
pp. 1730-1736 ◽  
Author(s):  
R. Turner ◽  
R. D. Koehler ◽  
R. W. Briggs ◽  
S. G. Wesnousky
Keyword(s):  
Fault Zone ◽  
Slip Rate

scholarly journals Supplemental Material: Quaternary slip rates on the White Mountains fault zone, eastern California: Implications for comparing geologic to geodetic slip rates across the Walker Lane

2020 ◽  
Author(s):  
Zachery M. Lifton
Keyword(s):  
Fault Zone ◽  
Depth Profile ◽  
Slip Rate ◽  
White Mountains ◽  
Slip Rates ◽  
Walker Lane ◽  
Profile Modeling

Field photographs, stratigraphic columns, displacement modeling results, depth profile modeling results, and slip rate modeling results.

scholarly journals Supplemental Material: Quaternary slip rates on the White Mountains fault zone, eastern California: Implications for comparing geologic to geodetic slip rates across the Walker Lane

2020 ◽  
Author(s):  
Zachery M. Lifton
Keyword(s):  
Fault Zone ◽  
Depth Profile ◽  
Slip Rate ◽  
White Mountains ◽  
Slip Rates ◽  
Walker Lane ◽  
Profile Modeling

Field photographs, stratigraphic columns, displacement modeling results, depth profile modeling results, and slip rate modeling results.

scholarly journals Holocene Earthquakes and Late Pleistocene Slip-Rate Estimates on the Wassuk Range Fault Zone, Nevada

2012 ◽  
Vol 102 (4) ◽  
pp. 1884-1891 ◽  
Author(s):  
J. M. Bormann ◽  
B. E. Surpless ◽  
M. W. Caffee ◽  
S. G. Wesnousky
Keyword(s):  
Fault Zone ◽  
Late Pleistocene ◽  
Slip Rate ◽  
Wassuk Range

Temporal variations in slip rate of the White Mountain Fault Zone, Eastern California

2006 ◽  
Vol 248 (1-2) ◽  
pp. 168-185 ◽  
Author(s):  
Eric Kirby ◽  
Douglas W. Burbank ◽  
Marith Reheis ◽  
Fred Phillips
Keyword(s):  
Fault Zone ◽  
Slip Rate ◽  
Temporal Variations

scholarly journals Sevier Fault at Red Canyon

Geosites ◽  
2019 ◽  
Vol 1 ◽  
pp. 1-6
Author(s):  
Robert Biek
Keyword(s):  
Lava Flow ◽  
Fault Zone ◽  
Hanging Wall ◽  
Slip Rate ◽  
Normal Fault ◽  
Coarse Grained ◽  
Seismic Reflection Data ◽  
The North ◽  
Total Displacement ◽  
Reflection Data

The Sevier fault is spectacularly displayed on the north side of Utah Highway 12 at the entrance to Red Canyon, where it offsets a 500,000-year-old basaltic lava flow. The fault is one of several active, major faults that break apart the western margin of the Colorado Plateau in southwestern Utah. The Sevier fault is a “normal” fault, a type of fault that forms during extension of the earth’s crust, where one side of the fault moves down relative to the other side. In this case, the down-dropped side (the hanging wall) is west of the fault; the upthrown side (the footwall) lies to the east. The contrasting colors of rocks across the fault make the fault stand out in vivid detail. Immediately south of Red Canyon, the 5-million-year-old Rock Canyon lava flow, which erupted on the eastern slope of the Markagunt Plateau, flowed eastward and crossed the fault (which at the time juxtaposed non-resistant fan alluvium against coarse-grained volcaniclastic deposits) (Biek and others, 2015). The flow is now offset 775 to 1130 feet (235-345 m) along the main strand of the fault, yielding an anomalously low vertical slip rate of about 0.05 mm/yr (Lund and others, 2008). However, this eastern branch of the Sevier fault accounts for only part of the total displacement on the fault zone. A concealed, down-to-the-west fault is present west of coarse-grained volcaniclastic strata at the base of the Claron cliffs. Seismic reflection data indicate that the total displacement on the fault zone in this area is about 3000 feet (900 m) (Lundin, 1987, 1989; Davis, 1999).

scholarly journals Measurements of tectonic micro-displacements within the Idrija fault zone in the Učja valley (W Slovenia)

2020 ◽  
Vol 60 (1) ◽  
Author(s):  
Andrej Gosar
Keyword(s):  
Fault Zone ◽  
Active Fault ◽  
Average Rate ◽  
Active Faults ◽  
Slip Rate ◽  
Seismic Hazard Assessment ◽  
Vertical Displacements ◽  
Recent Activity ◽  
Insight Into ◽  
Horizontal Displacements

A recent slip-rate of an active fault is a very important seismotectonic parameter, but not easy to determine. Idrija fault, 120 km long, is a prominent geomorphologic feature with large seismogenic potential, still needed to be researched. Measurements of tectonic micro-displacements can provide insight into its recent activity. The Učja valley extends transversally to the Idrija fault and was therefore selected for the installation of TM 71 extensometer. Measurements on the crack within its inner fault zone are conducted from the year 2004. In 14 years of observations a systematic horizontal displacements with average rate of 0.21 mm/year and subordinate vertical displacements of 0.06 mm/year were established, proving the activity of this fault. An overview of methods of displacement measurements related to active faults and of newer interdisciplinary investigations of the Idrija fault is given. Displacement rates are beside for geodynamic interpretations important for improvement of seismotectonic models and thus for better seismic hazard assessment.

scholarly journals Dynamic Deformation And Fault Locking of The Xianshuihe Fault Zone, Southeastern Tibetan Plateau: Implications For Seismic Hazards

2021 ◽  
Author(s):  
Layue Li ◽  
Yanqiang Wu ◽  
Yujiang Li ◽  
Wei Zhan ◽  
Xinzhong Liu
Keyword(s):  
Fault Zone ◽  
Dynamic Deformation ◽  
Slip Rate ◽  
Deformation Pattern ◽  
Observation Data ◽  
Strain Accumulation ◽  
Dynamic Adjustment ◽  
Strong Earthquakes ◽  
Coupling Characteristics ◽  
Xianshuihe Fault Zone

Abstract The Xianshuihe Fault Zone is one of the most historically seismically active regions in mainland China. However, the seismicity along this fault zone has been quiescent for the past 40 years, since the Daofu M6.9 earthquake in 1981. Understanding its current deformation patterns and fault coupling characteristics is of great significance to estimate the potential risk of strong earthquakes. In this study, we analyzed the dynamic deformation and fault coupling characteristics along the Xianshuihe Fault Zone using Global Positioning System (GPS) data for 1999–2007 and 2016–2020. The results show that the deformation pattern of the Xianshuihe fault zone underwent a dynamic adjustment after the Wenchuan and Lushan earthquakes, i.e., the maximum shear strain accumulation rates of the Luhuo and Daofu sections significantly decreased from 6.0×10-8/a to 3.2×10-8/a, while that of the southeastern segment (i.e., Kangding and Moxi sections) increased from 4.5×10-8/a to 6.2×10-8/a. Additionally, the slip rate and deformation width of the Xianshuihe Fault Zone also changed during these two periods. Combined with the near-field cross-fault observation data, we suggest that the surrounding strong earthquakes 2008 Wenchuan Mw7.9 and 2013 Lushan Mw6.6 had evident differential impacts on the deformation pattern of the Xianshuihe Fault Zone. The fault-coupling inversion results show that the locking degree of the Xianshuihe Fault Zone continued to increase after the Mw7.9 Wenchuan and Mw6.6 Lushan earthquakes, especially the Qianning and Moxi sections increased significantly, with an average coupling coefficient of greater than 0.9 and left-lateral slip-rate deficits of ~5 mm/a and ~8 mm/a, respectively. In contrast, the locking degree of the Kangding section decreased with almost no slip-rate deficit, which may be due to the partial energy release caused by the Mw5.9 and Mw5.6 Kangding earthquakes in 2014. The analysis of the recent rupture history and strain accumulation characteristics of the Xianshuihe Fault Zone indicates that both the Qianning and Moxi sections have a high seismic potential for the next strong earthquake in the Xianshuihe Fault Zone.

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