Preliminary slip-rate table and map of late-Quaternary faults of California

Clark, Malcolm M.; Harms, K. K.; Lienkaemper, James J.; Harwood, David S.; Lajoie, K.R.; Matti, Jonathan C.; Perkins, James A.; Rymer, M. J.; Sarna-Wojcicki, Andrei M.; Sharp, Robert P.; Sims, John D.; Tinsley, John C.; Ziony, Joseph I.

doi:10.3133/ofr84106

Cited by 40 publications

(36 citation statements)

References 24 publications

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“…[Beanland and Clark, 1987;Lubetkin and Clark, 1988]. The Holocene slip rate along the adjacent, more shallowly dipping Sierran normal fault zones (Independence fault) is at least an order of magnitude lower than along the Owens Valley fault zone [Clark et al, 1984]. Both Holocene and major late Pleistocene displacement on the Independence fault zone appears to be purely dip slip, with no evidence of lateral or oblique offset [Gillespie, 1982].…”

Section: The Largest Historic Event In Utah Occurred In 1934 Inmentioning

confidence: 99%

State of stress and modern deformation of the Northern Basin and Range Province

Zoback¹

1989

J. Geophys. Res.

149

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Constraints on the current stress regime of the actively extending northern Basin and Range province are provided by deformation data (focal mechanisms and fault slip studies), hydraulic fracturing in situ stress measurements, borehole elongation ("breakouts") analyses, and alignment of young volcanic vents. The integrated data indicate significant variations both in principal stress orientations and magnitudes. An approximately E-W least principal stress direction appears to characterize both the eastern and western margins of the Basin and Range province, whereas in the active interior parts of the province extension occurs in response to a least principal stress oriented NW to N60øW. The contrast in stress orientations between the province boundaries and in the interior suggests that along the margins the least principal stress direction may be locally controlled by the generally northerly trending profound lithospheric discontinuities associated with these margins. Active deformation along the southeastern and western province margins is characterized by a combination of strike-slip and normal faulting. Focal mechanisms along northeastern province margin (Wasatch front) and in central Nevada indicate a combination of normal and oblique-normal faulting. Temporal, regional, and depth-dependent variations in the relative magnitudes of the vertical and maximum horizontal stresses can explain much of the observed variations in deformation styles. However, some depth variation in faulting style inferred from focal mechanisms may be apparent and simply a function of the attitude of fault planes being reactivated. Evidence for significant temporal variation (or multiple cycles of variation) in relative stress magnitude comes from the Sierran front-Basin and Range boundary region where recent earthquakes are predominantly strike slip, whereas the profound relative vertical relief across the Sierra frontal fault zone in the last 9-10 m.y. implies a normal faulting stress regime. Using the best data on stress orientation, relative stress magnitudes are constrained from slip vectors of major earthquakes and young fault displacements. Analysis of well-constrained slip vectors in the Owens Valley, California, area indicate that large temporal variations in the magnitude of the approximately N-S oriented maximum horizontal stress are required to explain dominantly dip-slip and strike-slip offsets on subparallel faults. Similar faulting relations are observed throughout much of the boundary zone between the Basin and Range-Sierra Nevada (including the Walker Lane belt). Along the eastern province margin in the Wasatch front area in Utah, available data suggest that the maximum and minimum horizontal stresses may be approximately equal at depths of <4-5 km. Earthquake focal mechanisms in this area suggest more variability in relative magnitude of the two horizontal stresses with depth. Furthermore, superimposed sets of young fault striae along a segment of the Wasatch fault also indicate temporal variations of relative stres...

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Section: The Largest Historic Event In Utah Occurred In 1934 Inmentioning

confidence: 99%

State of stress and modern deformation of the Northern Basin and Range Province

Zoback¹

1989

J. Geophys. Res.

149

View full text Add to dashboard Cite

show abstract

“…data 1984;compare with Morton andothers, 1982, andTinsley in Clark andothers, 1984). Estimates of seismic moment indicate expectable surface-wave magnitudes of 6.5 to 7.2 for fault-rupture lengths of 10 to 25 km, assuming an average stress drop of 60 bars, an average seismogenic crustal thickness of about 10 to 15 km, a maximum seismogenic crustal thickness of about 20 km, and crustal materials having average properties of elasticity and rigidity (J. C. Tinsley and J. C. Matti, unpub.…”

Section: Slip Rates and Faulting Recurrencementioning

confidence: 67%

Recent reverse faulting in the Transverse Ranges, California

1987

Professional Paper

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“…Much of the initial effort has thus been toward the identification and systematic cataloguing of published slip-rate data into a computeruseable format. The primary data base for this compilation effort are the work of Anderson (1979), Bird and Rosenstock (1984), and Clark et al (1984). In the table of Clark et al (1984), only information on slip rates derived from displaced Quaternary deposits are listed.…”

Section: North-south Distrnce In Kilometersmentioning

confidence: 99%

“…The primary data base for this compilation effort are the work of Anderson (1979), Bird and Rosenstock (1984), and Clark et al (1984). In the table of Clark et al (1984), only information on slip rates derived from displaced Quaternary deposits are listed. Anderson (1979) and Bird and Rosenstock (1984) consider slip rate information determined from displaced Pliocene and Miocene deposits as well.…”

Section: North-south Distrnce In Kilometersmentioning

confidence: 99%

“…The distribution of onshore faults that displace Quaternary deposits is shown in Figure la. The location of the onshore faults is based principally on the work of Jennings (1975) and Clark et al (1984). Also shown in Figure la is the distribution of major offshore fault structures tnat are known from marine seismic reflection or drillhole studies to break surface on near surface deposits and, hence, may well also displace Quaternary deposits.…”

Section: North-south Distrnce In Kilometersmentioning

confidence: 99%

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Preliminary slip-rate table and map of late-Quaternary faults of California

Cited by 40 publications

References 24 publications

State of stress and modern deformation of the Northern Basin and Range Province

State of stress and modern deformation of the Northern Basin and Range Province

Recent reverse faulting in the Transverse Ranges, California

National Earthquake Hazards Reduction Program; summaries of technical reports, volume XXI

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