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California Fault Parameters 

 

CALIFORNIA DEPARTMENT OF CONSERVATION
DIVISION OF MINES AND GEOLOGY
OPEN-FILE REPORT 96-08

U.S. DEPARTMENT OF THE INTERIOR
U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT 96-706

 

APPENDIX A

CALIFORNIA FAULT PARAMETERS

FAULT NAME AND GEOMETRY
(ss) strike slip, (r) reverse, (n) normal
(rl) rt. lateral, (ll) left lateral, (o) oblique 		LENGTH
(km) 		SLIP
RATE
(mm/yr) 		RANK
(1) 		Mmax
(2)		 CHAR.
RATE
(events/yr) 		R.I.
(3) 		Down dip
Width
(km)(4) 		ruptop
(5)		 rupbot
(6) 		rake dip daz
(7) 		Endpt N Endpt S COMMENTS

B FAULTS (Continued)

SOUTHERN AND CENTRAL COAST RANGES

Casmalia (Orcutt Frontal fault)
(r, 75 SW)) 		29 3 0.25 0.20 P 6.5 0.00034 2901 10 2 0 10 90 75 225 -120.65;34.93 -120.37;34.82 Poorly constrained slip rate based on deformation of terraces (Clark, 1990).
Lions Head
(r, 75 NE) 		41 4 0.02 0.02 P 6.6 0.00003 36230 10 2 0 10 90 75 45 -120.61;34.87 -120.24;34.70 Poorly constrained slip rate based on offset marine terraces (Clark, 1990).
Los Alamos - W. Baseline
(r, 30 S) 		28 3 0.70 0.70 P 6.8 0.00066 1512 20 2 0 10 90 30 180 -120.32;34.76 -120.06;34.63 Poorly constrained slip rate based in part on dip slip displacement of A soil horizon (Guptil, et al, 1981).
Los Osos
(r, 45 SW)		 44 4 0.50 0.40 P 6.8 0.00052 1925 14 2 0 10 90 45 225 -120.87;35.30 -120.46;35.12 Poorly constrained late Quaternary slip rate based on uplift of marine terraces and assumed flt. dip of 30-60 degrees (Lettis & Hall, 1994).
Monterey Bay - Tularcitos
(r-rl-o) 		84 8 0.50 0.40 P 7.1 0.00035 2841 14 2 0 14 90 90 0 -122.12;36.92 -121.53;36.37 Slip rate is composite of flts in Monterey area (Tularcitos, Chupines, Navy, flts in Monterey Bay). Rates of individual flts. estimated to be about 0.1mm/yr (Rosenberg & Clark, 1995).
Rinconada
(rl-ss) 		189 19 1.00 1.00 P 7.3 0.00057 1764 10 2 0 10 180 90 0 -121.76;36.68 -120.51;35.31 Long term slip rate of about 3mm/yr based on Hart (1985). Lacks obvious Holocene offset.
 

GREAT VALLEY

Battle Creek
(n, 75 S) 		29 3 0.50 0.40 P 6.5 0.00076 1319 11 2 0 11 -90 75 180 -122.18;40.40 -121.85;40.47 Slip rate based on Clark, et al. (1984) and Page and Renne (1994).
Great Valley 1
(r, 15 W) 		44 4 0.10 0.05 P 6.7 0.00010 9537 10 2 7 9.6 90 15 270 -122.30;39.68 -122.28;39.28 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994). End point coordinates for all Great Valley segments are for top of rupture plane.
Great Valley 2
(r, 15 W) 		22 2 0.10 0.05 P 6.4 0.00015 6768 10 2 7 9.6 90 15 270 -122.28;39.29 -122.29;39.09 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 3
(r,15 W)		 55 6 1.50 1.00 P 6.8 0.00139 718 10 2 7 9.6 90 15 270 -122.28;39.12 -122.00;38.67 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 4
(r, 15 W) 		42 4 1.50 1.00 P 6.6 0.00212 472 10 2 7 9.6 90 15 270 -122.05;38.65 -121.89;38.30 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 5
(r, 15 W) 		28 3 1.50 1.00 P 6.5 0.00200 501 10 2 7 9.6 90 15 270 -121.90;38.30 -121.75;38.08 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 6
(r, 15 W) 		45 5 1.50 1.00 P 6.7 0.00161 622 10 2 7 9.6 90 15 270 -121.80;38.06 -121.52;37.72 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 7
(r,15 W)		 45 5 1.50 1.00 P 6.7 0.00161 622 10 2 7 9.6 90 15 270 -121.52;37.73 -121.16;37.45 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 8
(r, 15 W) 		41 4 1.50 1.00 P 6.6 0.00207 483 10 2 7 9.6 90 15 270 -121.16;37.43 -120.99;37.09 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 9
(r, 15 W) 		39 4 1.50 1.00 P 6.6 0.00197 508 10 2 7 9.6 90 15 270 -120.99;37.10 -120.75;36.81 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 10
(r, 15 W) 		22 2 1.50 1.00 P 6.4 0.00222 451 10 2 7 9.6 90 15 270 -120.76;36.80 -120.65;36.63 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 11
(r, 15 W) 		25 3 1.50 1.00 P 6.4 0.00252 397 10 2 7 9.6 90 15 270 -120.65;36.64 -120.45;36.5 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 12
(r, 15 W) 		17 2 1.50 1.00 P 6.3 0.00242 413 10 2 7 9.6 90 15 270 -120.44;36.48 -120.35;36.34 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 13
(r, 15 W) 		30 3 1.50 1.00 P 6.5 0.00214 467 10 2 7 9.6 90 15 270 -120.37;36.34 -120.15;36.14 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
Great Valley 14
(r, 15 W) 		24 2 1.50 1.00 P 6.4 0.00242 414 10 2 7 9.6 90 15 270 -120.16;36.14 -119.95;36.00 Slip rate and segmentation from WGNCEP (1996) and Wakabayshi and Smith (1994).
 

BASIN AND RANGE-SIERRA NEVADA

Antelope Valley
(n, 60 E) 		31 3 0.80 0.50 P 6.7 0.00089 1128 15 2 0 13 -90 60 90 -119.57;38.78 -119.48;38.51 Dip slip offset of Holocene alluvial fan reported by Bryant ( 1984).
Birch Creek
(n, 60 E)		 15 2 0.70 0.50 P 6.4 0.00106 945 15 2 0 13 -90 60 90 -118.34;36.98 -118.40;37.10 Slip rate based on Beanland and Clark (1994).
Death Valley (south)
(rl-ss) 		62 6 4.00 3.00 P 6.9 0.00385 260 13 2 0 13 180 90 0 -116.75;36.05 -116.38;35.60 Long term slip rate based on 35km rl. offset of Miocene volcanic rks. reported by Butler, et al, (1988).
Death Valley (graben)
(n, 60 W)		 54 5 4.00 3.00 M 6.9 0.00387 258 15 2 0 13 -90 60 90 -116.88;36.53 -116.74;36.06 Slip rate based on vertically offset alluvial fan surface reported in Klinger and Piety (1994).
Death Valley (northern)
(rl-ss)		 108 11 5.00 3.00 P-M 7.2 0.00297 336 13 2 0 13 180 90 0 -117.65;37.30 -116.88;36.55 Late Pleistocene slip rate based on offset alluvial fan near Redwall Canyon. Rate of about 4.5mm/yr estimated from 46m rl offset reported by Reynolds (1969) and estimated age of incision of fan surface (5-20ka) based on geomorphic expression of alluvial deposits and correlation of rock varnish ages in southern Death Valley by Dorn (1988). Slip rate of 5-12mm/yr reported by Klinger and Piety (1994) may be too high because of their assumption that Redwall Canyon alluvial fan surface is 40-70ka. Cation-ratio dates of rock varnish in southern Death Valley reported by Dorn (1988) suggest age of 100-170ka, which would reduce mean rate from 8.5mm/yr to .5mm/yr.
Death Valley (N of Cucamonga)
(rl-n-o) 		75 8 5.00 3.00 P-M 7.0 0.00412 243 13 2 0 13 180 90 0 -118.19;37.83 -117.67;37.31 Late Qt. slip rate based on offset Pleistocene shutter ridge in Fish Lake Valley reported in Reheis (1994). Reheis and Dixon (1996) suggest lt. Qt. slip rate of about 5 mm/yr in the Fish Lake Valley area.
Deep Springs
(n, 60 NW)		 25 3 0.80 0.60 P 6.6 0.00101 990 15 2 0 13 -90 60 300 -117.93;37.42 -118.06;37.23 Dip slip rates based on offset Holocene alluvial fans reported by Bryant (1989). Long term rate of 0.3mm/yr reported by Reheis and McKee (1991).
Fish Slough
(n, 60 W) 		26 3 0.20 0.10 P 6.6 0.00026 3809 15 2 0 13 -90 60 270 -118.41;37.59 -118.40;37.36 Poorly constrained dip slip rate based on offset of Bishop Ash reported in Bateman (1965).
Genoa
(n, 60 E)		 50 5 1.00 0.60 M 6.9 0.00090 1116 15 2 0 13 -90 60 90 -119.85;39.10 -119.81;38.67 Dip slip rate based on offset of late Tioga outwash reported in Clark, et al. (1984).
Hartley Springs
(n, 60 E) 		25 3 0.50 0.30 P 6.6 0.00063 1584 15 2 0 13 -90 60 90 -119.08;37.85 -119.00;37.64 Slip rate (0.15mm/yr) based on dip-slip offset of late Tioga lateral moraine reported in Clark, et al (1984). Slip rate is for small branch fault; unconstrained slip rate of 0.5mm/yr assumed for entire fault zone.
Hilton Creek
(n, 60 E)		 29 3 2.50 0.60 M 6.7 0.00259 386 15 2 0 13 -90 60 90 -118.88;37.69 -118.73;37.46 Slip rate based on dip-slip offset of late Tioga lateral moraine reported in Clark, et al (1984).
Hunter Mountain -
Saline Valley
(rl-n-o)		 71 7 2.50 1.00 P 7.0 0.00195 513 13 2 0 13 180 90 0 -117.95;36.92 -117.44;36.48 Long term slip rate (Pliocene) of 2.0-2.7mm/yr for Hunter Mtn. fault (Birchfiel, et al., 1987), and association with Panamint Vly flt.
Independence
(n, 60 E)		 49 5 0.20 0.10 P 6.9 0.00018 5696 15 2 0 13 -90 60 90 -118.30;36.88 -118.09;36.50 Slip rate based on offset Tioga outwash deposits reported in Clark, et al (1994).
Little Lake
(rl-ss) 		39 4 0.70 0.40 M 6.7 0.00085 1182 13 2 0 13 180 90 0 -117.88;35.91 -117.65;35.61 Minimum slip rate basd on offset channel cut in basalt (Roquemore, 1981).
Mono Lake
(n, 60 E) 		26 3 2.50 1.25 M 6.6 0.00328 305 15 2 0 13 -90 60 90 -119.19;38.15 -119.10;37.93 Slip rate based on offset of late Tioga lateral moraine reported in Clark, et al. (1984).
Owens Valley
(rl-ss) 		121 12 1.50 0.80 M-P 7.6 0.00025 4000 13 2 0 13 180 90 0 -118.33;37.24 -117.99;36.19 Slip rate reported in Beanland and Clark (1994) is composite based on Lone Pine fault and assumption that horizontal component similar to 1872 earthquake. Max. magnitude based on 1872 earthquake reported by Ellsworth (1990).
Panamint Valley
(rl-ss)		 108 11 2.50 1.00 M 7.2 0.00149 672 13 2 0 13 180 90 0 -117.41;36.44 -116.90;35.61 Moderately constrained slip rate based on offset drainages developed on Holocene alluvial fans reported in Zhang, et al, 1990.
Robinson Creek
(n, 60 SE) 		17 2 0.50 0.30 M 6.4 0.00086 1168 15 2 0 13 -90 60 90 -119.23;38.33 -119.32;38.21 Dip slip offset of late Tioga outwash in Buckeye Crk. reported in Clark, et al. (1984).
Round Valley
(n, 60 E)		 42 4 1.00 0.50 M 6.8 0.00106 941 15 2 0 13 -90 60 90 -118.34;37.94 -118.60;37.25 Slip rate based on dip-slip offset of late Tioga lateral moraine reported in Clark, et al (1984).
S.Sierra Nevada
(n, 60 E) 		76 8 0.10 0.10 U 7.1 0.00007 14655 15 2 0 13 -90 60 90 -117.99;36.19 -117.99;35.57 Unconstrained dip slip rate estimated by authors based on association with Independence fault.
Tank Canyon
(n, 60 W) 		16 2 1.00 0.50 M 6.4 0.00161 620 15 2 0 13 -90 60 90 -117.25;35.77 -117.25;35.64 Moderately constrained slip rate based on vertically offset Holocene alluvial fan (Clark, et al, 1984).
White Mountains
(rl-ss)		 105 11 1.00 0.50 P 7.1 0.00082 1224 13 2 0 13 180 90 0 -118.28;37.31 -118.17;37.05 Preferred rl slip rate reported by dePolo, 1989.
 

BAY AREA

Concord - Green Valley
(rl-ss) 		66 7 6.00 3.00 M 6.9 0.00568 176 12 2 0 12 180 90 0 -122.20;38.45 -121.98;37.89 Moderately constrained slip rate for Concord fault based on Snyder, et al. (1995). Slip rate of 6 mm/yr should be considered a minimum. No slip rates reported for Green Valley fault.
Greenville
(rl-ss) 		73 7 2.00 1.00 P 6.9 0.00192 521 11 2 0 11 180 90 0 -121.94;37.98 -121.50;37.42 Wright, et al (1982) reported a slip rate of about 1 mm/yr, based on an offset stream channel. A 10 km rl offset of a serpentinite body suggests a long term slip rate of 2-3 mm/yr.
Hayward (SE extension)
(rl-r-o)		 26 3 3.00 2.00 U 6.4 0.00454 220 10 2 0 10 180 90 0 -121.90;37.47 -121.72;37.28 Unconstrained slip rate based on slip budget between adjacent Calaveras flt. and assumed major slip junction of Calaveras and Hayward flt. (WGNCEP, 1996). Possible significant reverse componet not considered.
Monte Vista - Shannon
(r 45, E) 		41 4 0.40 0.30 P-M 6.8 0.00042 2410 15 2 0 11 90 45 90 -122.19;37.38 -121.79;37.21 Poorly constrained slip rate based on vertical separation of late Pleistocene terrace and assumptions of age of terrace (23-120ka) and flt. dip reported by Hitchcock, et al. (1994). Actual dip and fault width is variable. 15 km width approximates average.
Ortigalita
(rl-ss) 		66 7 1.00 0.50 P 6.9 0.00087 1153 11 2 0 11 180 90 0 -121.28;37.28 -120.91;36.76 Poorly constrained slip rate based on vertical slip rate reported by Clark, et al (1984) (0.01-0.04mm/yr), assumptions regarding H:V ratio, and geomorphic expression of flt. consistent with about 1 mm/yr.
Point Reyes
(r, 50 NE)		 47 5 0.30 0.20 P 6.8 0.00029 3503 12 2 0 9 90 50 45 -123.24;38.18 -122.83;37.94 Poorly constrained long term (post-Miocene) slip rate based on vertical offset of crystalline basement (McCulloch, 1987).
Quien Sabe
(rl-ss) 		23 2 1.00 1.00 P 6.4 00154 647 10 2 0 10 180 90 0 -121.36;36.93 -121.21;36.76 Poorly constrained slip rate estimated by authors based on vertically offset alluvial fan (Bryant, 1985) and assumptions regarding H:V ratio (6:1 to 14:1) based on 26JAN86 M5.8 earthquake (Hill et al, 1990) and age of fan surface based on soil profile development.
Sargent
(rl-r-o) 		53 5 3.00 1.50 P 6.8 0.00083 1200 12 2 0 12 180 90 0 -121.94;37.14 -121.45;36.87 Slip rate is rl. creep rate reported by Prescott and Burford (1976). Nolan, et al. (1995) reported a minimum Holocene rl slip rate of 0.6mm/yr in Pajaro River area, found evidence suggesting 0.8m of rl offset and a recurrence interval of about 1.2ka. However, the penultimate event about 2.9ka was characterized by about 1.7m of rl offset, suggesting max. earthquake of M 6.9. Recurrence of 1.2ka used, but further work necessary to resolve maximum magnitude, slip rate, and recurrence.
West Napa
(rl-ss) 		30 3 1.00 1.00 U 6.5 0.00143 701 10 2 0 10 180 90 0 -122.37;38.41 -122.24;38.16 Unconstrained slip rate based on assumption that geomorphic expression of fault is consistent with about 1mm/yr slip rate (WGNCEP, 1996).
Zayante-Vergeles
(rl-r)		 56 6 0.10 0.10 P 6.8 0.00011 8821 12 2 0 12 180 90 0 -121.97;37.09 -121.46;36.79 Slip rates reported by Clark, et al (1984).
  1. W — well-constrained slip rate; M — moderately constrained slip rate; P — poorly constrained slip rate; U — unconstrained slip rate.
  2. Maximum moment magnitude calculated from relationships (rupture area) derived by Wells and Coppersmith (1984).
  3. R.I. — recurrence interval.
  4. Down-dip width = (rupture bottom minus rupture top) divided by sine of dip angle.
  5. Top of rupture.
  6. Bottom of rupture.
  7. daz — dip azimuth.

This report is preliminary and has not been reviewed for conformity with U.S. Geological Survey editorial standards or with the North American Straigraphic Code. Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.