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 |
ELSINORE AND SAN JACINTO FAULT ZONES (NON A FAULTS) |
Brawley Seismic Zone (rl-ss) |
42 |
4 |
25.00 |
5.00 |
P |
6.4 |
0.04231 |
24 |
6 |
2 |
2 |
8 |
180 |
90 |
0 |
-115.71; 33.35 |
-115.51; 32.96 |
Slip rate and fault length reported by WGCEP (1995). |
Chino - Central Ave. (rl-r-o) (65 SW) |
28 |
3 |
1.00 |
1.00 |
U |
6.7 |
0.00113 |
882 |
17 |
2 |
0 |
15 |
180 |
65 |
225 |
-117.75; 34.03 |
-117.57; 33.83 |
Unconstrained slip rate based on assumptions of slip transfer between Elsinore and Whittier faults. |
Earthquake Valley (rl-ss) |
20 |
2 |
2.00 |
1.00 |
U |
6.5 |
0.00285 |
351 |
15 |
2 |
0 |
15 |
180 |
90 |
0 |
-116.58; 33.18 |
-116.41; 33.08 |
Slip rate based on Rockwell (p.c. 1996). |
Elmore Ranch (ll-ss) |
29 |
3 |
1.00 |
0.50 |
M |
6.6 |
0.00444 |
225 |
12 |
2 |
0 |
12 |
0 |
90 |
0 |
-115.66; 33.23 |
-115.85; 33.03 |
Late Holocene slip rate based on Hudnut, et al. (1989). Fault length includes eastward extent of zone of seismicity. |
|
GARLOCK FAULT ZONE |
Garlock - west (ll-ss) |
97 |
10 |
6.00 |
3.00 |
P |
7.1 |
0.00100 |
1000 |
12 |
2 |
0 |
12 |
0 |
90 |
0 |
-118.92; 34.83 |
-118.01; 35.27 |
Slip rate based on offset late Qt. stream channel (McGill, 1994; p.c. 1996). We use a 1ka recurrence, based on 700-2700 yr recurrence reported by McGill. |
Garlock-east (ll-ss) |
155 |
16 |
7.00 |
2.00 |
M |
7.3 |
0.00100 |
1000 |
12 |
2 |
0 |
12 |
0 |
90 |
0 |
-118.02; 35.29 |
-116.39; 35.60 |
Slip rate based on McGill and Sieh (1993). Average recurrence of about 1ka, based on McGill and Sieh (1991). |
Owl Lake (ll-ss) |
25 |
3 |
2.00 |
1.00 |
M |
6.5 |
0.00200 |
500 |
12 |
2 |
0 |
12 |
0 |
90 |
0 |
-116.64; 35.73 |
-116.88; 35.61 |
Slip rate based on offset stream channel. Timing of offset based on radio-carbon and rock varnish dating of alluviual fan surface reported by McGill (1993). |
|
SAN GREGORIO-HOSGRI FAULT ZONE |
Hosgri (rl-ss) |
172 |
17 |
2.50 |
1.00 |
M-P |
7.3 |
0.00155 |
646 |
12 |
2 |
0 |
12 |
180 |
90 |
0 |
-121.73; 36.15 |
-120.69; 34.86 |
Slip rate based on San Simeon fault slip rate reported in Hanson and Lettis (1994). |
San Gregorio (Sur region) (rl-ss) |
80 |
8 |
3.00 |
2.00 |
P |
7.0 |
0.00244 |
411 |
12 |
2 |
0 |
12 |
180 |
90 |
0 |
-122.16; 36.81 |
-121.74; 36.18 |
Late Qt. slip rate of 1-3 mm/yr based on assummed transfer of slip from Hosgri flt. Slip rate from San Simeon flt. (Hanson and Lettis (1994) and Hall et al (1994).. |
San Gregorio (rl-ss) |
129 |
13 |
5.00 |
2.00 |
P |
7.3 |
0.00250 |
400 |
15 |
2 |
0 |
15 |
180 |
90 |
0 |
-122.67; 37.89 |
-122.13; 36.81 |
Weber and Nolan (1995) reported Holocene slip rate of 3-9mm/yr; latest Pleistocene slip rate of 5 mm/yr (min) and lt. Qt. slip rate of about 4.5mm/yr reported by Simpson, et al. (written communication to J. Lienkaemper, 1995). |
|
CALAVERAS FAULT ZONE |
Calaveras (s. of Calaveras Reservoir) (rl-ss) |
106 |
11 |
15.00 |
2.00 |
P-M |
6.2 |
0.03030 |
33 |
5 |
2 |
5 |
10 |
180 |
90 |
0 |
-121.79; 37.43 |
-121.18; 36.62 |
Includes Paicines fault south of Hollister. Slip rate is composite based on slip rate for a branch of Calaveras fault reported by Perkins & Sims (1988) and slip rate of Paicines fault reported by Harms, et al. (1987). Creep rate for fault zone approximately 15 mm/yr. Maximum earthquake assumed to about 6.2 (Oppenheimer, et al., 1990). |
Calaveras (north of Calaveras Reservoir) (rl-ss) |
52 |
5 |
6.00 |
2.00 |
M |
6.8 |
0.00684 |
146 |
13 |
2 |
0 |
13 |
180 |
90 |
0 |
-122.03; 37.86 |
-121.81; 37.45 |
Slip rate based on composite of 5mm/yr rate reported by Kelson, et. al. (1996) and 6mm/yr creep rate from small geodetic net reported by Prescott and Lisowski (1983). |
|
SAN DIEGO AREA |
Coronado Bank (rl-ss) |
185 |
19 |
3.00 |
1.00 |
P |
7.4 |
0.00153 |
653 |
13 |
2 |
0 |
13 |
180 |
90 |
0 |
-117.93; 33.27 |
-116.84; 31.89 |
Slip rate for Palos Verdes fault assummed to extend to SE along Coronado Bank flt. |
Newport-Inglewood (offshore) (rl-ss) |
66 |
7 |
1.50 |
0.50 |
P |
6.9 |
0.00154 |
651 |
13 |
2 |
0 |
13 |
180 |
90 |
0 |
-117.91; 33.60 |
-117.43; 33.16 |
Slip rate based on assumption that slip from Rose Canyon zone transfers to offshore Newport-Inglewood (WGCEP, 1995). |
Rose Canyon (rl-ss) |
55 |
6 |
1.50 |
0.50 |
M |
6.9 |
0.00128 |
781 |
13 |
2 |
0 |
13 |
180 |
90 |
0 |
-117.42; 33.13 |
-117.13; 32.71 |
Mininum slip rate reported by Lindvall and Rockwell (1995). |