AUL T
A'' B'
BA
A'
30
3
10
11
17
19
24
20
33
18
22
8
18
2023
17
10
18
24
37
27
28
32
7
1880
7830
55
80
80
31
23
23
77
58
45
64 70
51
28
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4 13
41
53 31
7372
68
4543
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7543 40
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4034
15
37
19
25 33
23
63
82
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32
30
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5038
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1835
687
22
4015
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27
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7565
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21
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24
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1815
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6048
70 85
5
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7324
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85 7215
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4543
7
3
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24
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52
11
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1888
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57
36
53
58
4032
25
36
33
12
8
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8
64
3
7
20
27
18
30
48
24
7836 78
12
46
10
22
38
82
8673 38
60
75
37
19
25
26
7068 62
60
78
47
37
25
645
50
28 35
3053 19
20
42
2219
53
6251
23
50
86
45
6
10
39
12
37
32
78
49
45
50
37
33
25
31
316
805
33
30 3
8910
55
497 38
2153
51
60
74
10
2
14
12
25
3144
4248
35
35
40
40
47 32
2710
40
13
13
4221
33
15
18
30
20
35
30
33
9
2050
23
40
34
3530
25
35
33
40
35
30
32
32
25
50
35
35
40
40
15
12
16
21
51
1989
45
80
41
34
50
50
52
28
63
32
2023
80
27
38
60
37
22
28
28
64
23
60
8
14
9
40
35
25
40
25
15
8
15
15
30
25
17
32
20
15
45
35
35
35
33
35
35
23
45
30
52
24
32
15
33
62
13
7322
14
61
70
53
25
58
25
40
50
39
40
38
56
36
51
25
13
33
75 43
40 34
25
82
30
35
T c a u
Q a c
Q m a c
T c c
T c g
T c g
T q c
T q b
T m
T c a l
T c a u
T q b
T c c
Q a
Q o a
T c c
T c cQ l s
T c c
T p s
T p l T p l
T p l
T p b
T p b
T p s
T p s
T p b n
T p sT p s
T p b
T p s
Q m a c
T c v T m
T p b
T p s
Q o a
Q o a
T c v
T l c
T c a u
T q b
T c cT c a u
T c p
T q cT q b
T q b
T q b
Q a c
Q a c
Q a c
Q o a
Q o a
T c v
T c v
Q m a c
T l c
T l c
Q m a c
Q m a cT c v
T c v
Q m a c
T c p
T j s h
T c v
T c v
T c v
T c v
Q m a c
Q m a c
Q m a
Q m a c
T c a u
T c v
T c pT c p
T p b
T c c
T c vT c v
T j s h
Q o a
T c v
Q o aT m
Q o a
Q a c
T q b
Q m a c
T q b
T q b
T j s h
T j s h
T j s
T j m
Q m a
Q m aQ m a
T c l
T c l
Q o l s
Q l s
Q l s
T j s
T j s
Q b d
Q b d
Q b d
Q b d
Q b d
Q b d
T c g
Q o a c
T l c
T c c
T r d
T r d
T r d
Q a
Q o a
T j s h
T j s h
Q o a
Q o a
Q o a
T j s h
T j s h
T j c
T j s h
T j s h
Q m aQ m a
T j s h
Q y a
T j s
T m a
T j s
Q l s
Q l s
T j m
Q m a
Q a c
Q l s
Q l s
T j m
T j m
T m a
T j s h
T j s h
T j s h
Q m a
T j s
Q m a
Q m a c
T m a
T j s
T j m
T j m
T j m
Q a c
T j m
T j m
T m a
T m a
T m a m
T j s
Q a c
Q a c
Q a c
Q a c
Q m a c
Q m a
Q l s
T j s h
T j s h
T j m
Q a c
T j m
T j m
T j s
T j m
T j s
T j s
T j s
T j s h
T r d
T r d
T j s h
T m a
T m a
T m a
T m a
T m a
T m aT m a m
T m a m
T m a m
T c d
T c d
T c d
T c d
T c d sT c d s
T c d s
T m a
T m a m
T c dT m a m
T m a
T m a m
T r d
T j s
T j s
T j s h
T m
T m
T m
T j m
T j s
T j s
T j m
T j m
T j m
T j s h
T j s h
T j m
Q o a c
T j m
T c c
Q y a
Q y a
Q y a
Q y a
Q a
Q y a
Q a
Q a
Q a
T c g
T c c
T j s
T j s
T j s h
T j s
T c g
T j m
T j s
UNCONFORMITY
UNCONFORMITY
UNCONFORMITY
LOCAL UNCONFORMITY
Holocene
Pleistocene
Oligocene
Eocene
Pliocene
Miocene
??
??
QUATERNARY
TERTIARY
?
LOCAL UNCONFORMITY
CORRELATION OF MAP UNITS
Contact--Long-dashed where approximately located; short-dashed
where inferred;
invisible where arbitrarily located or conjectural
Fault--Long-dashed where approximately located; short-dashed
where inferred; dotted
where concealed; ball and bar on apparent downthrown side; pair
of opposing arrows
show sense of strike-slip component of movement; tic shows
direction and amount of
dip; arrow shows trend and plunge of slickenside striae
Thrust fault or moderately dipping reverse fault--Long-dashed
where approximately
located; short-dashed where inferred; dotted where concealed;
sawteeth on upthrown
block; tic shows direction and amount of dip; arrow shows trend
and plunge of
slickenside striae
Shear zone
Fold axial traces--Dashed where approximately located or
inferred; dotted where
concealed; solid arrows show direction of plunge of fold
axes
Anticline
Upright
Overturned
Syncline
Upright
Overturned
Marker beds
Sandstone
Conglomerate
Landslide headwall scarp--hachures on slide block
Strike and dip of beds
Inclined
Horizontal
Overturned
Approximate
Strike and dip of beds (after Dibblee, 1979)
Drill hole
EXPLANATION OF MAP SYMBOLS
Modern alluvium (Holocene)
Modern and young alluvium and colluvium (Holocene and
Pleistocene?)
Landslide deposits (Holocene and Pleistocene?)
Young alluvium (Holocene and Pleistocene?)
Middle alluvium (Pleistocene)
Middle alluvium and colluvium (Pleistocene)
Old alluvium (Pleistocene)
Old alluvium and colluvium (Pleistocene)
Old landslide deposit (Pleistocene)
Boulder diamicton (Pleistocene)
Morales Formation (Pliocene?)
Juncal Formation (Eocene)
Sandstone facies
Interbedded sandstone, siltstone, and shale facies
Siltstone and shale facies
Conglomerate facies
Matilija Sandstone (Eocene)
Interbedded sandstone and shale facies
Sandstone facies
Cozy Dell Shale (Eocene)
Rhyolitic dikes (Oligocene)
Gneissic breccia facies
Lacustrine facies
Arkosic sandstone facies
Breccia facies
Plush Ranch Formation (Miocene and Oligocene?)
Quatal Formation (Pliocene?)
Fluvial sedimentary rocks
Calcareous sandstone and diatomite
Lockwood Clay (Pliocene?)
Caliente Formation (Miocene)
Upper arkosic-lithic sandstone facies
Conglomerate facies
Variegated sedimentary facies
Clay-rich sedimentary facies
Granitic fanglomerate facies
Lower arkosic sandstone and breccia facies
Basal breccia facies
MAP UNITS
PRELIMINARY GEOLOGIC MAP OF THE SAN GUILLERMO MOUNTAIN
QUADRANGLE,VENTURA COUNTY, CALIFORNIA
By
Scott A. MinorVersion 1.0
1999
This map is preliminary and has not been reviewed for
conformitywith U.S. Geological Survey editorial standards or with
theNorth American Stratigraphic code.North American Datum of 1927
(NAD 27). Projection and10 000-foot grid ticks: California
Coordinate System, zone 5(Lambert Conformal Conic). 1000-meter
Universal TransverseMercator grid, zone 11
Geology mapped by S.A. Minor 1996-1998.Digital compilation by
S.A. Minor, O. Young,
and T. Brandt.
OPEN FILE REPORT 99-032U.S. DEPARTMENT OF THE INTERIORU.S.
GEOLOGICAL SURVEY
CONTOUR INTERVAL 40 FEET
NATIONAL GEODETIC VERTICAL DATUM OF 1929
PIEDRA
SYNCLINE
BLANCA
B IG
P I N E
LOCK
WOOD
VALLEY
F AU L
T
F
ZONE
SCALE 1: 24 0001 MILE1 1/ 2 0
7000 FEET1000 10000 2000 3000 4000 5000 6000
.5 1 KILOMETER1 0
14
APPROXIMATE MEANDECLINATION, 1991
TRU
E N
OR
TH
MA
GN
ETIC
NO
RTH
QUADRANGLE LOCATION
CALIF
T c p
T c a l
T c g
T c l
T c v
T c c
T c a u
T l c
T q c
T q b
T m
Q b d
Q o l s
Q o a c
Q o a
Q m a c
Q m a
Q y a
Q l s
Q a c
Q a
T j s
T j mT j s h
T j c
T m a T m a m
T c d T c d s
T p s T p l
T p b n
T p b
T c a l T c c
T c p
T c g
T c cT c v
T c a u
T l c
T c l
T q b
T q c
T m
Q o a
Q m a
Q y a
Q a
Q o a c
Q m a c
Q a c
Q b dQ o l s
Q l s
T r d
T p b
T p s
T p l
T p b n
T c d
T c d s
T m a
T m a m
T j s
T j m
T j s h
T j c
T r d
San Guillermo Mountain quadrangle
NACIMIENTO FAULT
BIG
Cuyama Valley
PINE
San Rafael Mtns.
Sierra Madre Mtns.
HILDRETHFAULT MUNS
ON CREEK FAULT
FAUL
T
Cuyam
a River
Cuyama
Badlands
SAN
ANDREAS
FAULT
San Emigdio Mtns.
Mt. Pinos
Lockw
ood V
alley Frazier
Mtn.
0 5 10 15 KM
PINEMOUNTAIN
FAULT
OZENA
FAULT
119˚ 00'119˚ 30'
119˚ 00'119˚ 30'
34˚45'
34˚45'
TECTONIC INDEX MAP
gneissic and granitic basement rocks?
WAGON ROADCANYON
BE
ND
IN
AlamoCreek
A
Beartrap
Creek
PIEDRA BLANCA
SYNCLINE
PINE
MOUNTAIN
A'
2000
3000
4000
5000
6000
7000
FEET
BIG
PIN
E F
AU
LT
LOC
KW
OO
D V
ALL
EY F
AU
LT
SE
CT
ION
A''
? ??
??
?
?
?
??
gneissic and granitic basement rocks?
B
Cedar
Creek
Piru
Creek
SAN GUILLERMO
MOUNTAIN
BIG PINE F
AULT
LOC
KW
OO
D V
ALLEY
FAU
LT Z
ON
E
B'
7000
6000
5000
4000
3000
2000
1000
FEET
?
?
?
??
?
? ?
6000
5000
4000
3000
2000
FEET
2000
1000
3000
4000
5000
6000
7000
FEET
T c d s
T c d
T c d
T c d
T m a m
Q a c
T m a
Q m a
T m aT j s h
T j sT j m T j m
T j m
T j s
T j s h
T c a u
T c v
T c c T p b
T p s
T p s
T c gT c c
T p l
T p l
T p b
Q o a
T c vT r c
T c g ?T j s
T j s h
T j s h
T j s h
T j s hT j m
T j s h
T j s hT j s hT j s
T m aT m aT j s h
T j s
T j s h
T j s h
T j s
T j s
T j c
Q y a
T j s h
T j s h
T j s
T j s h
Q y a Q a Q m a
T j s h
T j s h
T j cQ y a
T j c
T j s h
T j s h
T j s
T c g
T j s
T j s h
T c g
T j ?
T c g ?T c v
T c a u
T q b
T c v T l c
T c c
T c a u
T q b
T c v T c a uT c c
T c p T p b
T p s
T p b
T p sQ b d
