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Elmore Ranch Fault

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Journal Article

Slip on the Elmore Ranch fault during the past 330 years and its relation to slip on the Superstition Hills fault

K. W. Hudnut, L. Seeber, T. Rockwell
Published: 01 April 1989
Bulletin of the Seismological Society of America (1989) 79 (2): 330–341.
DOI: https://doi.org/10.1785/BSSA0790020330
...K. W. Hudnut; L. Seeber; T. Rockwell Abstract The Elmore Ranch fault is a left-lateral fault that strikes northeast within the right-lateral transform boundary that strikes northwest through southern California. It lies transverse and adjacent to the segment of the Superstition Hills fault...
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Journal Article

Flexural-slip folding along the Eastern Elmore Ranch fault in the Superstition Hills earthquake sequence of November 1987

Ralph E. Klinger, Thomas K. Rockwell
Published: 01 April 1989
Bulletin of the Seismological Society of America (1989) 79 (2): 297–303.
DOI: https://doi.org/10.1785/BSSA0790020297
...Ralph E. Klinger; Thomas K. Rockwell Abstract Co-seismic flexural-slip folding of a small anticline along the Eastern Elmore Ranch fault associated with the Superstition Hills earthquake sequence demonstrates that variations in left-lateral slip can be explained locally by folding. Surface rupture...
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Journal Article

Slip on the Superstition Hills fault and on nearby faults associated with the 24 November 1987 Elmore Ranch and Superstition Hills earthquakes, southern California

Sally F. McGill, Clarence R. Allen, Kenneth W. Hudnut, David C. Johnson, Wayne F. Miller, Kerry E. Sieh
Published: 01 April 1989
Bulletin of the Seismological Society of America (1989) 79 (2): 362–375.
DOI: https://doi.org/10.1785/BSSA0790020362
...Sally F. McGill; Clarence R. Allen; Kenneth W. Hudnut; David C. Johnson; Wayne F. Miller; Kerry E. Sieh Abstract Alignment arrays and creepmeters spanning several faults in southern California recorded slip associated with the 24 November 1987 Elmore Ranch and Superstition Hills earthquakes...
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Journal Article

Surface faulting along the Superstition Hills fault zone and nearby faults associated with the earthquakes of 24 November 1987

R. V. Sharp, K. E. Budding, J. Boatwright, M. J. Ader, M. G. Bonilla, M. M. Clark, T. E. Fumal, K. K. Harms, J. J. Lienkaemper, D. M. Morton, B. J. O'Neill, C. L. Ostergren, D. J. Ponti, M. J. Rymer, J. L. Saxton, J. D. Sims
Published: 01 April 1989
Bulletin of the Seismological Society of America (1989) 79 (2): 252–281.
DOI: https://doi.org/10.1785/BSSA0790020252
... fault zone as far as 9 km; the maximum observed surface slip, 12.5 cm, was on the northern of the three, the Elmore Ranch fault, at a point near the epicenter. Twelve hours after the Elmore Ranch earthquake, the M 6.6 Superstition Hills earthquake occurred near the northwest end of the right-lateral...
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Journal Article

Rupture process of the 1987 Superstition Hills earthquake from the inversion of strong-motion data

David J. Wald, Donald V. Helmberger, Stephen H. Hartzell
Published: 01 October 1990
Bulletin of the Seismological Society of America (1990) 80 (5): 1079–1098.
DOI: https://doi.org/10.1785/BSSA0800051079
...David J. Wald; Donald V. Helmberger; Stephen H. Hartzell Abstract A pair of significant earthquakes occurred on conjugate faults in the western Imperial Valley involving the through-going Superstition Hills fault and the Elmore Ranch cross fault. The first event was located on the Elmore Ranch...
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Journal Article

Mechanical Models Suggest Fault Linkage through the Imperial Valley, California, U.S.A.

Jacob H. Dorsett, Elizabeth H. Madden, Scott T. Marshall, Michele L. Cooke
Published: 11 June 2019
Bulletin of the Seismological Society of America (2019) 109 (4): 1217–1234.
DOI: https://doi.org/10.1785/0120180303
... rate of 35 mm / yr . In addition, high‐strain energy density rates around the Cerro Prieto fault in all models suggest that the UCERF3 preferred rate of 35 mm / yr may require revision. The Elmore Ranch fault‐slip rate matches the UCERF3 rate only in models with continuous linkage. No long‐term slip...
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Includes: Supplemental Content
Image

Model‐calculated surface slip‐rate distribution plot along the Elmore Ranch...

Published: 11 June 2019
Figure 7. Model‐calculated surface slip‐rate distribution plot along the Elmore Ranch fault. Distance along the fault trace is measured from the southwest end of the fault. Horizontal dashed lines represent the average slip rates over the entire fault surface for several different models (Fig.  5
Image

(a) Model results (individual symbols) evaluated against UCERF3 estimated a...

Published: 11 June 2019
. In models 2 and 3, slip across the BSZ is the average slip rate on the BSZ‐east fault or BSZ‐west fault, respectively. In model 4, slip across the BSZ is calculated as the sum of the average slip rates on the BSZ‐east and BSZ‐west faults. (b) Rescaled plot depicting Elmore Ranch fault. Note that negative
Image

Generalized fault map of the southern part of the Salton Trough. Surface ru...

Published: 01 December 2006
Figure 1. Generalized fault map of the southern part of the Salton Trough. Surface ruptures indicated for the 1892 ( M 7¼), 1934 ( M L 7.1), 1940 ( M w 6.9), 1968 ( M w 6.5), 1979 ( M w 6.4), and 1987 ( M w 6.2 and 6.6) earthquakes. ERF, Elmore Ranch fault; SHF, Superstition Hills
Image

Isostatic gravity map of the San Felipe anticline ( SFA ) and vicinity. Dat...

Published: 01 January 2007
Figure A3. Isostatic gravity map of the San Felipe anticline ( SFA ) and vicinity. Data from Langenheim and Jachens ( 1993 ) and V. E. Langenheim (unpublished data, 2004). BB , Borrego badlands; CF , Clark fault; CCF , Coyote Creek fault; EFZ , Extra fault zone; ERF , Elmore Ranch fault; OB
Image

Map of the Salton trough with seismicity ( M w > 1.5 ) recorded...

Published: 27 February 2018
(SSGF). Solid lines indicate the major fault systems: SAFZ, San Andreas fault zone; SJFZ, San Jacinto fault zone; IMFZ, Imperial fault zone; EFZ, Elsinore fault zone; BFZ, Brawley fault zone; ERF, Elmore Ranch fault; SSHF, Superstition Hills fault; SSMF, Superstition Mountain fault.The color version
Image

Map of the boundaries of the Salton Trough P -wave velocity model (white b...

Published: 01 October 2006
by green triangles. Key to abbreviations: SAF, San Andreas fault; BSZ, Brawley seismic zone; IMP, Imperial fault; SJFZ, San Jacinto fault zone; ER, Elmore Ranch fault; CP, Cerro Prieto; LS, Laguna Salada; CD, Cañada David detachment; EFZ, Elsinore Fault Zone; BCF, Blue Cut Fault; COA, Coachella Valley; IV
Image

Figure 1. (A) Fault map of Southern California, modified from Sharp (1967)...

Published: 01 November 2006
Figure 1. (A) Fault map of Southern California, modified from Sharp (1967) . (B) Generalized geologic map of the western Salton Trough. A—Anza; BB—Borrego Badlands; CCF—Coyote Creek fault; CF—Clark fault; EF—Elsinore fault; ERF—Elmore Ranch fault; EVH—Earthquake Valley fault; FCVB—Fish Creek
Image

Geologic map of the western Salton Trough. Shape outlined by dashed black l...

Published: 01 January 2007
and Elsinore fault; ERF , Elmore Ranch fault; IF , Imperial fault; BSZ , Brawley seismic zone; DH , Durmid Hill; SFH , San Felipe Hills; OB , Ocotillo Badlands; BB , Borrego Badlands; VFCB , Fish Creek–Vallecito basin; FCM , Fish Creek Mountains; PM , Pinyon Mountains; CM , Coyote Mountain; SYM
Image

Seismicity between 1981 and 2010 (gray dots) recorded by the southern Calif...

Published: 01 October 2013
–Mexico border. Abbreviations for the major geological features in this area include the SAF , San Andreas Fault; BRF , Buck Ridge fault; CF , Clark fault; CCF , Coyote Creek fault; EVF , Earthquake Valley fault; EFZ , Extra fault zone; BFZ , Brawley fault zone; IF , Imperial Fault; ERF , Elmore
Image

Map views of the absolute P ‐wave velocity model at different depths. Blac...

Published: 01 October 2013
, Elmore Ranch fault; SHF , Superstition Hills fault; SMF , Superstition Mountain fault; and LSF , Laguna Salada fault. The profiles for cross sections in Figures  6 , 7 , 9 , and 10 are shown in (d). The southwest–northeast direction profiles, shown by the numbers, are perpendicular to the SAF
Image

Map views of the Q P model at different depths. The black lines denote...

Published: 09 September 2014
of the resolution matrix greater than 0.1. Abbreviations in (a) are BFZ, Brawley fault zone; BRF, Buck Ridge fault; BSZ, Brawley seismic zone; CCF , Coyote Creek fault; CF , Clark fault; EF , Elsinore fault; EFZ, Extra fault zone; ERF, Elmore Ranch fault; IF, Imperial fault; LSF, Laguna Salada fault; SAF , San
Journal Article

Surface ruptures on cross-faults in the 24 November 1987 Superstition Hills, California, earthquake sequence

K. Hudnut, L. Seeber, T. Rockwell, J. Goodmacher, R. Klinger, S. Lindvall, R. McElwain
Published: 01 April 1989
Bulletin of the Seismological Society of America (1989) 79 (2): 282–296.
DOI: https://doi.org/10.1785/BSSA0790020282
... historic surface faulting , U.S. Geol. Surv. Open-File rept. 32 pp. Budding K. E. Sharp R. V. (1988) . Surface faulting associated with the Elmore Desert Ranch and Superstition Hills...
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(a) Major geological features in the study area, enclosed by the red box. T...

Published: 09 September 2014
; M, Mesquite; and S, Salton Sea). Other abbreviations include BFZ, Brawley fault zone; BRF, Buck Ridge fault; CCF , Coyote Creek fault; CF , Clark fault; EFZ, Extra fault zone; ERF, Elmore Ranch fault; EVF, Earthquake valley fault; IF, Imperial fault; LSF, Laguna Salada fault; SAF , San Andreas
Image

(A) Relocated earthquakes in the Salton Sea area from A.D. 1983 to 2011 col...

Published: 17 June 2022
represent active rhyolite domes, and the gray shaded region denotes areas with limited subbottom penetration due to shallow gas. Bathymetric contours are 5 ft intervals. SAF—San Andreas fault; XF—Extra fault; ERF—Elmore Ranch fault; CCF—Coyote Creek fault; BB—Bombay Beach; LC—Lake Cahuilla high shoreline.