stratigraphyofthenojoquiandlascrucescreeksdistrict

STRATIGRAPHY OF THE NOJOQUI ANDLAS CRUCES CRE KSDISTRICT, SANTABARBARA COUNTY, CALIFORNIA
Hanf ord Drummond
April 15, 1941
A THESIS
SUBMITTED TO THE DEPARTMENT OF GEOLOGY AMD THE COMMITTEE
ON GRADUATE STUDY OP THE LILANP STANFORD JUNIOR UNIVERSITY IN
■
PARTIAL FULFILMENT OF THE REQUIREMENTS FOR THE DEGREE OF
MASTER OF ARTS
Approved for the Department
Approved for the ooonalttee ©n Graduate Study
TABLE OF CONTENTS
INTKOIHJGTIOK
AGKNOvsLiillXiifMi^U'c*
»
..
...
.""""""4
5
BEt2IK(*
OiSOLOaiO
;
INTRODUCTION i 0 k
1
>QK*&MX
6
©tit I, CRETAGiiOUs.
7
SIERRA BLa&GA FORMATION, EOCKHI
8
UNIT 11, EQCFHS
10
UNIT 111, KQOJgIiX
11
XMTH IV, KUCKWL
13
OAVIOTA 1
SiSSI
17
. %m$ <iO-OLIGOCEkE
21
iM&tim,* OLIGOCiiIK
VAQDSROS FORMATION, OLIGO-MIXME
22
RIBCOH FORMATION, MIOC I
23
MQDiiXP FORMATION, MIOCENE
.
24
GONCLIJBIOMS
25
REGISTER OF LOCALITIES
27
LITERiiTum CITED
43
LITERATURE (PEEP Aft AT 101 OP REPORT).
.....
..
.
45
LITERATURE (IDHJTIFIO/TIOB OF MEGAFOSSILS)
46
LITERATURE ( IDEKTIFIC/TIQK OF MICROFOSSILS )
48
FLATIS
1
INTRODUCTION
One ©f the most ©onf using and unsettled prob-
lems confronting present-day stratigraphers and paleontologists le that of the Eo©ene-01igoeene boundary
on the raelfl© Slop© of North America*
Formations
suofa as the Gaviota and ftreyenhagen in Calif ornis have
been dated from time to time, first as Eoeen© and then
ee Oligoeane.
Strong statements of opinion are not
lacking by any means,
vlps
feoodring (lE, p. I§o/ who
states that
Is no more reason to believe thet the
giant Venerlcards survived until Qligoeene time in Cal-
ifornia thrn to believe that Ammonites became extinct
at the close of Oretaceous tiae everywhere in the world
except in
California".
This situation is analogous to the supposed dis-
covery of ammonites and dinosaurs in Oenosolc rocks*
The Boeene-Oligoeen© boundary problem will be
solved ©nly after detailed mapping, stretigraphio work
and Intensive paleontologle studies have been ©arried
©ut in
a©
many areas ap possible wherein structural and
paleontologle control
©an
b© established*
It is the
purpose of this report to focus attention on the facts
discovered in one of these ©rltieal
area©
containing
questionable late Eocene and early Oligocene reeks.
2
The Nojocui*Las Cruc©e ©reeks area is of particular significance.
In that
are©
and well exposed seotion of fosaillf
Is a continuous
erous ro©k© rang-
ing in age from medial Eocene to media! Miocene, thereby giving paleontologi© and stratlgr^phi© ©©ntr©l b©th
below and above the disputed
The Nojoqui-Las
Cru©es ©reeks dletrist lp in Ss-nta Barber© ©ounty,
California, on the north side of the eest-west trending Santa Xne« mountains*
The area is included in
the south-© ©ntru! p©rtl©n of the Lompa© qu^dr^ngle,
end approximately two mnd ©ne-htlf miles south of the
town of Buellton, wad one-half mile north of Las
Cruces*
Gavlote Pass, whieh is near this region, for
over one hundred years has been e point of interest
to historians
be©ays©
of the events whieh took plae©
here; and t© geographers, sine© the .Pap© affordp the
best means of ©ommunie^tl©n between the Santa Yne«
valley and the e©&st*
Sin©© 186? this particular area
has been investigated $nd reported
geologists*
©n
by a ntsmber of
Antlsell (1)* and Fairbanks (16) are
happ the earliest men whop© reeonn&ispanee w©rk
p&r^
©n
th©
C©ast Ranges included the N©j©qui-Las Cruo©s ©reeks
# The numbers In parentheses refer to the papers el ted
in the terminal bibliography*
s
area*
Anderson (2), in their work on th©
Arnold
Santa Marie oil field,' mapped the Vaqueros formation
with th© Kioeene roek©/ but no specific attention
given to th© elder Cenozoie rocks*
wap
Kawley (5), pal-
eontologist for th© Str-nford Geological Survey, 191®,
compiled the dete of the Survey for that year In a
thesis for th© I,A. d_*srm
reeks of this
tiated**
srep
T,W*
In which the ©ld@r Tertiary
were mapped as
undifferen-
Dibble©, Jr*, has mepped in detail
crrtogrsphl© units of this
ere©
thp
&nd in the preparation
of th© California geological msp, his formations below
th®
Vaqueros
were lumped as *Tejon, undifferentiated**
During the spring of 1940 the writer mapped
shout 16 square miles of this district, using airplane
photographs (ppale of two thousand feet to the Inch)
supplemented by the topograph!© map of the Lompo© quadrangle, edition of August 1005*$
An Intensive study of this critical arer shows
that Its stratlgr&phl© slgnlfican©© is thr©©folds
(1) The "Tejon undifferentiated** has been div-
ided into Its component lithogenetl© units*
(Ej After accurately allocating in the strati-
*
The ©©iumnar section© accompanying this report
were constructed on the basis of distances scaled
from the airplane photographs*
4
graphic column th© mmy collections of fossils In th©
N©joqul ©re©k section, it beesme apparent that thie
peetion
will serve in th© future
§®
a basis for pel-
eontologi© ©ontrol in other ere&s ©f th© S«nta
range*
ell-©xposed se© tions, where both strueturrl
and paleontologle ©ontrol
r^TG
Ynep
©in
be established, are
Th© Nojoqui ©reek section, with full
Plppwhere*
control established, will b© e standard in setting up
a timp-stratlgrsphi© classification ©f the California
C en© sci© strata*
(5) Attention
@r%d.
is focused on the newly-dis©ov-
date whl©h have bearing on th© &ocene~ollgoo-enp
boundary problem of the Pseifie Slop©*
ations »re here made*
No interpret-
The ©©ntribution of this report
is th© reeording of facts that may b© used in any future discussion of this bound ery question*
ACKNOWLEDGEMENTS
This study is a part of th© Stanford University
Eocene project being carried out under th© dlr©otl©n of
E.G. Schenok*
I am Indebted for his generous assistane©
in th© field and laboratory.
lam grateful to the Hono-
lulu Oil Corporation whose financial aesisti*noe made this
study possible, and to Elmo i* Adamp, ©hlef geologist
of that company, for th© release of th© inf©rmation in
this report*
f*W. Dibble©, Jr*, gave many helpful sug-
5
ges tions in th© field*
Lois T. Martin, Myra Keen,
John Eimmerman, R« Stanley Leek, and C.I. Alexander
11 contributed in the Identification of the fossils.
GEOLOGIC SETTING
Throughout most of th© litsr&ture relating to
the Santa
Yhep
mountains emphasis is placed on the
tlclin*! structure of the
rung©
in general,
pfe~
this snti
ollnal aspect Is obscured in that section of th© rang©
north from GrvlotP b©aeh to th© Santa Ynez river.
In-
stead, a geologic el observer, traveling along the m^ln
highway from Gf-vlota Bpach to Buellton, Is struek by
the threefold repetition of lower Cenos©i© ro©ks sep©reted by maj©r fruits
©r
fault
zon©s.
Broadly speak-
ing, each of these sections might be considered as in-
dividual f&ult blocks, the term being used in a loose
structure!
sens©
insofar as
paoh
section is n©t defin-
itely known to be bounded by f suits on all sides.
The southernmost of these "blocks" begins at
the cof-st »nd extends northward on the mrin highway
to
i
point known as The l arrowp or Hanging Rook of
Gaviota Pass*
Here the sequenee of th© "eosptal
bloek* 1 is terminated by a northeast-southwest trending norms! fsult dipping to the northwest (11,
p*
67;
From Gaviota Pass north to th© summit ©f the
Nojoqul grad© is another well -exposed seotlon of Low-
e
er Cenopol© rocks.
th© lower beds of
In this, th© "Lap Cru©es blo©k w
,
'th© mcosstfl bloek u are repeated,
and in addition still lower stn tigraphl© horizons
are seen.
The etratlgraphl© relations in this ®blo©k M
are complicated in its northern portion by the junction of th© main branch of the north© «s s t- south*©© t
trending Santa Inez fault snd another ess t- west trending fault, the latter being the arbitrary boundary of
this "block".
lorth ©f this zone ©f faulting lies th©
Mojocml-Lfs Cruces ©recks district.
INTRODUCTION TO STRATIGRAPHY
The rocks out-cropping in this laet-nsmed area
are undifferentiated Upper Cretseeous sandstones rod
shales, overlsin unconformably by 0500* f©et of Eooene,
Ollgo©ene and Miocene beds.
These etrat have been deformed into a gent!©,
southerly-dipping monocline! structure.
The northern
limit of th© *N©joqul-Las Cruoes creaks block* Is
mark-
ed by an eatt-wppt tr©nding fault, whieh dies out eastward in the vicinity ©f N©joqu! Creek.
Mere the domin-
ant structural feature is a tightlyfolded anticline.
The general monoelinal structure Is terminated on the
south by the fruit zone which ms-rks the boundary between th©
creeks
block"*
Cru©©s block" &nd th© "Nojoqui-Lss Cruces
7
i
rockp
i"
rticularly well-expo
is in Las Cruces creek,
r
Her©
©tion of thppe
almost continuous
outcrops afford complete structural control.
Th©
ac-
companying columnar section (Pl* 1/ la based upon
this section, but the fossils in this ©reek
v> bundrot
88
pr©
not
in th© NojOnUl ©reek section.
Paleontologies! ©ontrol, th©rafore, bused on
both aegefoesilp &n& miorofosalls,
Nojooui ©reek section.
wap
takon in the
The stretlgr&phlo positions
of the severe! fosril localities have been tied in to
the Las Cruces creek section by geologic mapping.
UNIT I
The name
Chlco* has besn applied by previous
workers to the sandstones and shsle© outcropping along
th© ridge of the 1921 hill, md, in the vtlley immediately to the north of this ridge.
In view of ©urrent
work, demonstrating th© misude of the term, th© nnn©
is not ueed h©re*
Furthermore, this Unit I,
w^s
given
only a summary examination as it is not pertinent t©
the
mpin
problem*
Th© northern boundary of the Unit is determin-
ed by a f suit, which has brought th© V**queros on th©
north int© ©outset with the Cretaceous beds,
A sample
taken from the Vaqueros formations! locality M-136 in
th© valley north of th© 1981 hili has yielded question-
PLATE I
COLUMNAR SECTION MEASURED ALONG LAS CRUCES CREEK ;
LOMPOC 9UAD. SANTA BARBARA CO., CALIFORNIA.
STANFORD UNIVERSITY EOCENE PROJECT NO. 93.
NOVEMBER
H. DRUMMOND
AGE FOR
SCALE LITHOLOGY
LOC.
1940
FOSSILS
ATIONKFEEt
6500
6000
J
u
BAGGINA
B.
5500
uj
z
UJ
u
BOLIVINA ADVENA, B.
BULIMINA
PULL
NODOSARIA
ENIA
PARVA
2
o
TURRITELLA
5000
2
OSTREA
GLYCYMERIS
CF.
ACHYDESMA YNEZIANA,
TURRITELLA VARIATA
x
PITARHORNII, SCHEDO-
450
BREWERII
CHLAMYS
CARDIA BREWERII,
NUCULANA
TURRITELLA
SCHEDO-
Z
o
u
z
4000
E
CRASSATELLA
FICUS
OSTREA CF. TAYLORIANA^ PITAR CALIFORNIANUS
TURRITELLA VARIATA
3500
UJ
Z
CIBICIDES N.
222
PLECTOFRONDICULARIA
PSEUDOGLANDULINA CF.
ROBULUS
UVIGERINA N. SP.
U
O
(J
BULIMINA
CIBICIDES
BRADYI, PLECTOFRONDICULARIA
3000
o
P.
2 217-222
M-foV-y
2500
UNIT J3Z
U.
/
1500
o
bJ
UNITTJX
uNrrn
S. B.
C RET
CF. CONDONI,
P. PACKARDI
EPONIDES
TRITAXILINA
ROBULUS
ROTALIATINA SP.
VALVULINERIA GEORGIANA
AMAURELLINA
BULIMINA CF.
FICOPSIS
,
GARI
SCHEDOCARDIA
BREWERII, TURRITELLA CF. BUWALDANA
ISCHEDOCARDIA BREWERII, TURRITELLA UVASANA
1000
IDOSINIA
500
IcARDIUMe LINTEUM,
*
UNIT I
A PLECTOFRONDICULARIA PACKARDI fAUCTORES)
,
z
u
,
CAUCTORES), PULLENIA LILLISI
B.
B- CF. STALACTA
BULIMINA
CIBICIDES N.SP. I, N.SP. 2, GYROIDINA CF. DANVILL
MARGINULINA EXIMIA,
PLECTOFRONDICULARIA GARZAENSIS, PULVINULINELLA
SPIROLOCULINA' SP.
2000
UJ
UJ
NODOGENERINA
P. GARZAUVIGERINELLA
VALVULINERIA IN-
, GYROIDINA
/ ICASSIDULINA
M-139/ /-^"PLECTOFRONDICULARIA
IA"
M-137
>
YEGUAENSIS^
ULINA
UJ
_l
,
M-loshv
I--
,
NEMO-
TURRITELLA UVASANA
Nficopsis sp., TURRITELLA
TUR
UVASANA
\)CALCAREOUS ALGAE
Oi
..■*-.*>
able S&ucesian Foramlnif era*
of Unit I
wa©
The
southern boundary
c^refull^ mapped since th© unconform-
r«ble relrtion of th© Cretaceous teds to the overlying
Sierra Blsnca limestone is well-defined*
A©©ordlng
to T.'tv, Dibble©, Jr.** this unconformity Is vlsibl
Et several place© in neighboring
areap*
Instrumental
observations tlong the ridge of the 192:1 hill confirm&" relationship.
The Cretaceous ag© of this Unit
has been ee tab ll shed by Hawley, whose evidence Is presented elsewhere (§, p. 14 j.
SIERRA BLANCA FORMATION
The formation succeeding Unit I is the Sierra
Blanca limestone, of Eooene
age*
This formation was
nam©d rod described by Nelion (10, p. 552).
Th© typ©
locality, deslgnstod by Heenan (6, p. 65/, is In Indian Creek, in th© southeast portion of th© Ecnta Inez
HUadr&ngle, approximately Su miles east and north of
the Nojoqui-L&s Cru©es ©recks region*
In the lattor &r©&, this formation is an aren
4^©eous
limestone composed of grains of qupjpt*, feldspar Sf
biotite,
shalp
eous plgap*
p©bbl©s imd a varying rmount of ©aloar-
The percentage of algae varies laterally
in the formation, so that at many pieces the rock Is
Oral eommunlcstion, March, .1940.
9
best described as a ealo&r©ous sandstone*
The -Sierra
Blenea is an ©xtremely hard rook, resistant to leathering, and Its meppive grey outerop© form the east-west
trending ridge of the 19* 1 hill*
Other than the calcareous algae, no fossils
were found in this formation by the writer*
However,
©rbitoids have bev^n found In the Sierra Blanea of the
Wojoqui creek area (Eeenan,
op*
clt., p. 73, 75 j.
fhese fossils d©te the formation as approximately
medial Eocene (Keenan,
op*
cit*, p. 77 J*
The relations between this unit $m& the over-
lying sh^le form® t ion, Unit II,
mr^
conformable; and
as stated above, the Sierra Blanea rests unoonformably on the Cretaceous rocks. Eeenan (op. cit*, p. 75)
stated that, recording to L.M. Clark* Cretaceous shales
are uneonformsbly overlein by
ia-75 fe t thick.
a
coarse Eocene sandstone
Bibfelee and the writer are of the
opinion that this particular sandstone bed Is Cret-
aceous in age and that the unconformity is between the
Sierra Blanc a and the a and* tone* not between the sand-
stone and the underlying shales.
L.M, Clerk
(Keenan, op. ©It., p. 75) has inter-
preted the Sierra Blroes limestone as being
© peries
of
lenses included within th© shale formation, Unit II of
this report.
The writer found the Sierra fclroea to be
10
a distinct and continuous mgp, abl© unit, 15U-500 f ©et
thi©k*
On trie ridge of th© 1921 hill the Cretaceous
sandstone, the Sierre Bl^nce limestone, and the
lying black PhalP
over-
are well exposed and ©aally mapped,
nd it is evident that the limestone here, although
varying in thickness from plaoe to p!«©#, is not a
series of lensos*
Correlation between the Sierra Blanca limestone
of the Kojoqui ©reek district rod the typ© locality
of th© formation In Indiro ©reek
ero b© made on the
bssis of lithology, orbitolds and algae*
UNIT II
Ihe
mm*
w*Tuncal* has been applied by som© ge-
ologists to th© she!© conformably overlying the Sierra
Blanc a limestcn© in th© Kojo^ui-Las Cruces creeks
area*
Since there has been no published description of th©
t©rm
in this
report it is called Unit 11.
This poorly exposed formation is a dsrk brown
to black ©ley shsle, and at two of its outcrops a d@ep
red color is the distinguishing char ?cteri ©tie*
The
thickness is variable, ranging from 75 to 350 feet,
th© greatest thlekn©ss being between "Moonshine**
yon and lojo^ui ©reek.
©en-
In this vicinity, a lenticular
missive bed of sandstone, similar in lithology to Unit
111, is included within unit ll*
Approximately £,sou
11
feet west of
1
©enyon, this sandy lens is
©bsent*
Unfortunately no f©pa lip were found in these
shales, m& any tentative correlation
with ether strets
in th© Santa Yne© rang© would have to be m®de on th©
b^sis of other evldenee*
It is suggested that this
unit may be th© ptrstlgrephlc equivalent of e foram-
Inif©ral red shale described by Dibble© (3),
Such a
suggestion is based ©nly on th© relative positions of
th© two unit®, m& th© fact that Onlt II of the Hejoqui
area is, in places, similar in color and lithology.
UNIT 111
Th© massiv© sandstone formation conformably
overlying Unit II has been named by some 'field geologists, for conv©nl©n©e, th© *Mptillj.% ff sandston©,
Th© Metllija was n«?m©d mad the type locality desig-
nated by Kerr md Sehenek 17A, p. 1090), but th© term
has no pr©©ise meaning in th© western pert of th© Santa xnes rsnge*
Lithelogloally, this formation is a meppive,
buff to brown, medium- to i
osi© sandstone*
rained, biotiti© ark-
The eonsplcuous mineral constituent,
which is chprfcteristi© of the formation throughout
most of th© Santa in©2 rt>nge «e w©ll
is the blotlt©*
The biotiti©
bb
In thlP area,
not-
12
ive, as sll other Eocene sands in the district studied
during this investigation are characterised by the pres-
ence of museovite.
This sandstone is a poorly-indursted rock, fri-
able, and often described as being **e.tvemous we^therIng***
However, it forms impressive outcrops on the
south slope of the ridge of the 1981 hill, where the
dip slope of the formation supports a dense growth of
above the brush, large portions of
brush*
this dip slop© may be seen from a distance of two or
three miles.
The distribution of the brush is remark-
ably limited to the sandstone, making the mapping of
the unit
i
relatively simple matter*
In thickness, the formation is fairly constant,
ranging from 800 feet at the head of Las Cruees creek
to approximately 500 feet in Hojoqul creek*
A rough
separation of the formation Into an upper m\d lower
division can be made on the basis of limestone concre
tions which occur abundantly in the upper beds but are
absent in the lower.
These hard, cannon-bell concre
tions are well-rounded, range in size from about two
inches to two feat in diameter, &n& stand out upon
weathering from the me in body of the rock*
In add-
ition, they are the chief source of fossils In the
unit.
13
An assemblage of megafosslls
n&B
found In the
upper part of the formation that is identical with the
faun* of the lower beds (Liveoek member of Karka) exposed in Live Oak Ccnyon tw the type
formation In Kern County^*
eras of the Tejon
In addition, another sim
i|ar assemblage was found In the lower one-third of
Unit 111 at loo* 2?1B»
It is on the basis of these
olluska thftt a correlation with the type Tejon is made*
The
«?ge
of the f onus t ion is determined without my com
mltments here that the synchronization is of zonal magnitude.
U NIT IV
Conform&bly overlying Unit 111 is a sequence
of alternating sandstones and silts tones being called
by some field geologists at the present time the '"Cozy
JDellw shsle <7A, p«
1090)*
This name is no more v^lid
in the Mojoqul creek area than "Juneal* or
end to
ls
Matilija%
avoid confusion the term Unit IV is user in this
report*
The sandstones are thin-bedded, friable, dark
brown on exposure, usually micaceous snd silty.
As
they are traced to the west, they become light-grey in
color and show s decreasing amount of silt.
*
She silt-
J. Marks, oral communication, October, 1940.
14
stones are soft, dark brown to greenish, for the most
part poorly bedc
ness of the formation
highly fractured.
aver* &ea
looCH.
The thick-
feet throughout
most of the arei mappec
These silistonee and sandstones sre well exposed in this area*
Unusually good sections outcrop
in Las Cruces creek and the parallel canyons running
north to the main 1921 hill ridge.
The numerous road-
outs along the main highway (U* S. 101) give additional exposures.
The fauna of Unit IV is more significant than
that of any oth«r formation in the liojoqui-Las Cruces
creeks area.
The Foraminlf era serve not only to date
and tie in the unit to other sections of California,
but add valuable data relating to the locene-Oilgo-
eene boundary problem in California snd the Pacific
Slope*
In the lower portion of the formation at loc*
M-103 occurs an assemblage with elements suggesting a
correlation with gone A3 of palming (9, p. 545)*
Bul-
imina ef ♦ oppl.tata is the most noteworthy fossil,
since this species is restricted by Lslmlng to 2one A3
and the lower pert of A2*
At locs* M-138, M-101 i?nd the lower p^rt of
M-88, all stratigraphically above M-103, samples were
15
collected which contain
frondlcular.is oackarM
Dorothea
prljacipenais, Plecto-
(sue tores), Pal lent a
Uvijgerina garzaensls. '$n& Trltaxlllna colel*
forms
are sufficient evidence
llllisi.
These
making sn assign-
ment of these strat to Laimlng f s zone
'Ag
(op^ clt»,
p. 544).
At loc. M-BS seven samples were collected, of
which the lower two fall within Eons A3, m& the uppmT
five in Eone Al* (op* cit*, p. 543)*
Csssldullna
globes a, *?leotofrondicularls<> ienkinei* Flectofron.dif.ni
Packard! (au tores)* Pul lenja lllllsi, and
spiroloou-
line are a few of the forms found In the upper samples*
suing has named Eone Al the mf lee t-ofrondlcul aria jena>
In si sone*, and the range of the species is confined to
the zone.
This particular assemblage from the middle
of Unit IV is also identic?! with the fauna from the
typical
"
from the north side of Mt* Diablo,
--kley* f runa
*Kreyenhagen* of Taff,
Contra Costa county.
Zone R of Lslming (op. cit*, 6, p. 542) is represented In the 'Ho joqu'i area by the combined aasem-
olages of locs. I-lUO, 1-137, M-139*
These occur strat-
Igrsphieally in the uppermost part of Unit IV and the
lower part of the overlying format l on a*
yponldes
Such forms as
el ana la ye^uaensis and 1M ec tofrondlcji-
laria o-Ciiordl (sutores) are abundant, and although they
Icl
10
are not diagnostic Eone E species, they are supplemented by typicsl Rafugien megafossils found Immediately above the contact of Unit IV and the overlying sandstone.
Lalming's correlation ©harts show graphically
the relation of the lojoqul section, containing zones
A3, A2, Al, and R, to the succession in other parts
of California*
Furthermore, the lojoqul fauna has
certain species represented in the Btssendorf and Eeasey shales of Oregon (39), and the Cowlitz beds of
shington.
loldes
&©ne A2 contains Qlbieidea &" j£Jj* I,
2, in common with the Cowlitz^, and
jft* aj£*
in common with the Bassendorf »
oidina condonl
n
.
.11 mi
hi. -hi
■«■
iiin:i'
ii
i
£iboyr-
Zone A!
in Mo J ©qui creek also contains .(jfyroldlna fondonl* In
Zone R there
are two forms similar to the Cowlitz i
Clbleldes &* aj>. 3, and
»g*l and one species
in common with the bassendorf, Bponides mexloanus* Also
in gone 8 Is a form similar to Fl.anullna harden! of f&ie
Bassendorf, but which Beck believes to be a new species
°^ Cihlcldes
found in the Cowlitz.
The purpose of the
above remarks is to point out th©t the sequence of as-
semblages in the Hojoqul ©reek area appears to be the
same aa In Oregon, Washington, and other parts of California*
#
R* Stanley Beck, wrlttan communication, Hov. 4, 1940*
17
GAVIOTA FORMATION
Currently field geologists disagree as to what
should.be attached to the sandstone formation
tmm^
conformably overlying Unit IV.
Evidence la presented
below to substantiate the belief that the name Savlota
is correctly appliecit© this formation*
This formation, unlike any other unit in the
$
shows a rapid change of f teles from sandstone in
the If ©j ©qui creek region to e silts ton© in the vicinity
of Las Cruces eraek.
The sandstone In lojoqul creek Is
grey to light brown in color, medium to eosrse-grained,
arkoslc, and contains a large amount of muscovlte*
The
lower psrt of the formation In Nojoqui creek is composed of 50-75 feet of slltstone, lithologlcslly striking-
ly similar to the silts tones of Unit IV*
The silts tones
gradually become more prominent toward the west, ®n& in
las Cruces cr®ek the entire formation is a slltstone,
with the exception of a basal bed of sandstone md a few
sandstone lenses*
The sandstones in ifojo^ui creek are for the most
part friable, mnd,
ing.
are not greatly resistant to weather-
They contain ©aleareous concretions rnd lenses
which are hard
ever they occur*
and resistant, and support ridges wher-
ihsr© the silt® tones predominate, the
formation is easily eroded, the thin sandstone beds be-
18
ing more resistsnt*
aa
The thickness of the formation,
measured along Las Cruces creek,
whereas the thickness
is 275 feet,
one mile west of Wojoqui creek
Is *p>roxlmrtely 1100 feet.
By reference to the
ac
©©mpanylng geologic map, it will be seen that this
great difference in thickness is perhaps due to the
unconformable relation between the Gaviota and the
©verlying Seeps*
This unconformable relation however, Is doubt-
ful.
Mo place was found where a reliable dip could
be taken on the conglomerate beds of the lower Sespe.
The evidence pointing to an unconformity is the areal
—
relationship between the Uaviota and the Sespe
the
latter formation apparently covering more ??nd more
beds of the deviate, westward from Hojoqul crock*
Sev
er&l places were found where both Qsviota and the Besp
are well exposed and am unconformable relation is apparent, but as the bedding In the Sespe is Indistinct,
a structural
discordance could not be corroborated by
inatruraental control.
he fossils of the
both in regrrd to the
significant
formation
ag© and
the nsming of the unit.
In the lowermost part of the formation at Loe. 822$
the following fossils were found t Crs aa a tella colline,y
""'
Pious jester!* Qarl sp*» y srotrlx sp » Ostrea ©f tav*
Willi
11l
ini
II i
II
II
I
.
IImi.
.mi
Ipriana,* rltar ©ffllfomianus e Tel Una sp.,
and Turrit*
'
■mmmtmmmmvmWmwmW'mmmr-
i
ella varltta* senau stricto.
Strr-tlgraphieally higher
at loc* 2221, a f eunule was collected containing Brach-
J^ntes cowUt&enalß,,
i*l r-na
sp*,
Oh^imys ijaezlrnuii, flarj sp., lu£-
Sehedoaard^
sane, Venerlcar&ia sp.
brewer jLl* Turritella cf.
Fifty feet stratigraphically
a t'saemblage occurs with the
higher at loc. & .-2 the
dditlon of Piter sp.
atratlgraphleally highest iss-
was found at the
seatblsae of fossils in the formation
type locality of Turritella ye.rl.ate* Loc. *-j217.
specimens of Turritella y/;,rlf t* and
are associated with
0s tree cf
inrnn
—
.
loreft-
Oft! amya
taylor 1ana* and
*
L&rge
firsasfttella ©ollina
yap*1 anus.
FachJd.esma
*mWom+mttt*m\tm«m*''*"**hi+m.mi»wm
Gljcyaerls n.
sp*.
yneglma*
«■» m'mi*><i*mmrm-mu-
m*
This last assemblage of species constitutes one
of the reasons for attaching the neme Geviota t© this
formation j a
nam©
first introduced by Iffinger (4) for
that assemblage of marine strata falling within the
Turritella varlata. ♦zone' 3
*
Ef finger also designated
Csnadr de Santa Anita the type locality of the formation*
In order to substantiate the nomenclature here
adopted for this formation in So j©qui ©reek, it is
nec-
esarry to compere the Kojonui section with that at the
type locality of the
tfavlota*
Klelnpell (8, fig. 6)
gives a oclumnar section showing the type section of
the Orvlota formation and the overlying beds.
Accord-
2Q
ing to Frederic Kelley* the
a e queuee sub
type aaviota is
(a)
shale, (b)
follows?
pent
V
to the
200 feet of organic
850 feat of m%% mating sandstone® znd
silty ss>nds, all of which 1
palled by
at the present time "Coldwater"*
is approximately 000 feet of
piste
(c)
some geologists
Underlying this
and si Its tones, fol-
lowed by {d) 1000 fe-t of massive sandstone snd (e)
80C feet of shslea with, limestone lenses In the. lower
pf-rt*
Piste 11. shows graphically the comparison between the type Qsvlota md the Kojoqul-Lse Cruces
creeks section*
These columns demonstrate
though not identic s-1, sequence of beds.
&
similar,
Th6 llm.es tone
carrying Dlspopyellna in $©j©qui creek is obviously
correlative with the series of limestone lenses,
cont?:=ining fcjsoocyolina. in Cans da de Smte
Higher in the column, Unit 111 is correlated with the
msasive sandstone forms tion in Canada ta Sent* &nita
on the basis of lithology, as well as fossils*
The top
of the formation in each section is reasonably Inferred
s being the same
horizon*
Unit IV in Kojoqui creek is
r '-presented by more then one type of lithology in the
an*da d® Santa Anita section wher«- the upper beds are
of a more sandy f spies overlain by 20u feet of shale.
#
Oral communication, November, 1940
PLATE II
21
The base of the type Oaviota was established by Bf-
flnger.
In Mojoqui creek, the base of the formation
succeeding Unit IV contains foirallp thft are identical
with those found In Effinger's Turritella vrriata
*zone-*.
The upper limit of this unit in both sections
Is marked by the distinctive
a conglomerate.
It
Is concluded, therefore, that the name deviota Is correctly applied to the ©artogr ■phio unit overly
ait
IV In Nojoqui creek, Pimps It occupies a similar stratigrtphic position '^nd contains the same fauna as the
type Or-viota*
SESPH FORMATION
The formation
©an
be separated into an upper
i*n& lower division on the bssis of lithology.
er portion, roughly SOU feet thiek, is
t
The low-
missive, poor-
ly-bedded eonglomerate composed of a variety of chart
pebbles, cobbles snd boulders, all typical Franciscan
debris.
The variety of shape, size and color of the
constituent fregments is striking.
The
upper division,
"oximately 600 feet in thiekness, is composed of
grey and red, medium- to coarse-grained sandstone.
These unfosslllf erous red beda, which are poor-
ly cemented andhenoe eaally eroded, are well exposed In
the main valley of Las Cruces creek, Immediately north
of the Las Cruces ran©h house.
Sere they
»tb
essentially
22
horizontal,
en tie dips to tl
©r
most distinctive fe
Pi of the:
south.
@
Th
forme tion
throughout the entire Santa Inez rsnge is its deep red
color, a oh
ter which holds true for tl
s Cruces
creek ares.
VAQUEROS FORMATION
The name Vaqueros has been applied to the sandstone conformably overlying the Sespe red beds in the
lojo^ul-Uas Cruces
erpeke
eral agreement as to toe
district.
up age
There has been gen-
of this name In the Santa
Inez mountains, although there has never been
buj
ref-
erence to the type Vsqueroa on Vaqueros ©re*;k, Monterey
county
"
In pieces, the sandstone is light brown, and
medium grained, but the ueusl lithology Is a medium-
to ©oaree-grained* grey sandstone.
Lee ally, this grades
into a panda tone conglomerate whose pebbles are chiefly blsek and gp&en chert, characteristic Franciscan mat-
erial*
The upper part of the formation, with well
rounded calcareous concretions, Is more indurated than
the lower beds, and forms a ridge transverse to Las
Cruces creek at the site of the Las Cruces ranch
«
In thickness this unit is approximately 250 feet
throughout most of the
area mapped.
house*
£3
The age of the Vequeros is still in dispute,
In this area as well
fornia.
&s
in other localities In Call
Fossils collected in the vicinity of
Cruces ©reek *r© sufficient guides
Las
as to the ident-
ification of the formation, but they do not add any
new evidence as regards the age of the Vaeueros of
this general region.
On the accompanying geologl© map
the *?.ge of the format leu
?ligooene
is ind letted es being either
or Miocene.
RINCON FORMATION
The
nam©
Rlncon is accepted as valid in this
report for the shale unit immediately
conformably
overlying the Yaqucros sandstone*
This formation is a light to medium brown,
"organic-' clay sh&le, slightly silty at som« horizons,
and characterized by en sound an© © of yellow-brown limonitic boulders*
The thickness of the unit is fairly
constant, ranging from 800 to 1000 feet*
The Bincon
is ff-irly wPJtI exposed, the best section being in Las
Oruces creek.
Here the poorly-bedded, ®nd highly frac-
tured chsracter of the formation is teen.
Ho fossils were found In the formation, and
hence no ex<e<t age determination
©an
be made.
However,
the strstlgrsphlo position of the Kin© on bplow the Mod-
elo, In which there is exret paleontological
control.
i;4
and Bbove the
Vequeros, places the sge within relative-
ly small limits.
The correlation between the type locality of
the Rlncon and the Eincon of this erea is made mainly on the basis of relative stratigraphic position,
following the original description of the formation
as mmdm by IL&rr (7)*
MODELO FORMATION
Ihe uppermost formation mapped in the area is
i&e Model©, a unit recognized throughout most of the
poastsl
area of southern California on the basis of
its distinctive lithology
nd fossils*
gists prefer 'to call th
it either
inas shale in the Santa inez
rang
Some geolo-
Monterey
or 'Sal
Since there is no
uestion as to the identity of the formation in the lojoqul area, it will be call©
erally used,
here by the name most gen-
Model©*
Th© Podelo Is brown siliceous sh^ie, weathering
to white.
It is moderately well indurated, supporting
the northeast-southwest trending ridge of the I£3o hill.
It is fairly well exposed, the best section being in
Cruces creek.
ne thickness of the formation as measurpd
long Las Cruces creek is approximately 2300 fe >t.
i
The
complete thickness of the formation is not to be found
'-*" D
in this
ares
ths
up
er boundary of the formation
tn fault contact with the Cretaoeous.
Th© Cret-
ceous age of the sandstone on the south side of the
fault is dtermlned indirectly
within
«
—
by the fact that
short distance of the fault ©outset the Eo-
cene red ahal© is found overlying the sandstone.
An assemblage of microfcsslls was
Loc* H-99 In this unit.
found at
This important faunule ser-
ves as a psleontologl© top to the entire section studled during this investigation.
Th* Foramlnifera b-
TdHjT in the .Sinhogenerjna- hughesl sons, lower Luiei*n stage, Middle Miocene series, defined, by Kleinpell*
CONCLUSIONS
■wing to the controversial nature of the E©~
o©ne-011gocene boundary problem in California, the
writer
hap
endeavored to present in this report only
the essential facts regarding the stratigraphy of this
area.
This should be more helpful to future workers
than to snalyze aw this time such facts as
ble.
Certain facts, ho« ever,
m&y
ar#
avail-
be brought to the
attention of the readers
(1/
The entire sequence whose age is in dis-
pute Is not only older than lower Luisian, but Is old-
r than the Turritella Inez ana
zone.
(i?)
-.
sputed sequence
X0
definite-
ly younger than the Sierra Flrnca limestone*
(5)
Th© disputed part of the section overlies
strata carrying Porcminifera
in the
11
(4)
e believed to fall
ienklnsi zone.
Since these Foramlnifora Indies te a correl-
ation with strata often called "upper Ksrkley*, or the
reyenhagen of Taff **, it would seem that the disputed
sequence Is younger than beds so denominated.
(5/
Hence, the inference here recorded for fu-
ture testing is that the Oavlota formation is
than the
"Tejon*' formation restricted,
th e Turritella
(S)
Inegsna
younger
and older thfn
zone.
Granted the above inference, it then fol-
lows that the beds In this report called aavlota fall
in the Kefugian stage of the i-'aelfie Slope Tertiary j
this stage is either late Bocene or early Ollgoeane
In aae.
27
REGISTER OF LOCALITIES
MIOROFO3SIL hOQMLV
net
Mojoqul creek, I£,6X>
feet south
88° east from
1921 hill as measured on the topograph!© map.
roadcut on main highway
(0* $*
of fork of old and new roads*
Third
101), 4200 feet north
£500 feet south of Live
k Diary.
Sample #1 collected 70 ft* north of highway mark B-100+04
Ml*
I*9o
;
;: ¥ a
a
2
95 w
*
"
*
*
n
;
%}
>■
4
O
"■'
H
(1
140
n
n
170
"
*
e
£15
7
255
Drummond,
Collectori
Formations
U)t
Fauna
--
R
H
n
H
ff
»
«
« n
it
M
'*
tl
U
*©h, 1940.
Unit IV
Samples 1-6 are placed In L&iming''* zone Al
i
1.
.Foilvine
2*
Bui lm ln a ov&ta.
b.
CasFldulina ffloboea
n*
sp*
(1) All localities are in the Santa Barbara County,
Lompoc quadrangle* The Identifications of species are
provisional.
28
4»
Cibieides
jj£.
£♦ Owahman &
Itpltaetere
Ciblcldes
so.
-"IK.
iiiimJgim-1
ii
1-
i-iiii
-i.
■
Carol amine S£*
—
«-
■*»*""
c
.ponldes sp*
9*
vagina*
aio.b,ifr,erlna I£.
10.
ayroldlna ©f ,
.©.ondonl
JL Jt
Oyroldlna ©f
plmi ens is
"
.
I©*
uyroidina cf * ffol^llM
iiaplophraWo^ea |£*
14.
ho&oe grla s.fr.
15.
"■
16.
f
lee tofr ondloular i a 00.0kc
?! ec tofrondic.ul arl a * Jenklnaj*
j
17*
Plectofrondieulsria
1©
"
Fullenia lllllsi*
£w
"
mil
I
lin mi
,i|l;Tlr
iur nuiiliinimi
■>
.1 maul I I I!
i i
i..
""■
—
.
obuius ef
*»Jfc »
Fiobuius sp.
£2*
spj_rolQ©ullna s£.
85,
Uvlgerlna
C R
"
m.
27
'"
iti.
'''
"
HobuluP inornatus.
i.
!?0*
'"'*?: «
paakartl
rotulus
n. so.*
TJvijcerlna ftgrgaenais.
TTvigcrlna
JSR*
rjvlgsrlnella pp.*
Valvulinerlg
serobicul^ta.
auctore
29
.ylep 6
A2.
-4.
*".
a
gaaaldullna globopa.
o*
Oyol amin M
a«
flphidlum s£.
5,
qio.bigerlna
*
e
"bulloldee.
.Cfarroidlna
oondonl.
w
,
"fWll|a aMM**Milra*aii>*i
Mmiimmmmmwtmmm
"~riTTir -iartrmini
Gyroldina p.imienpjp
La^ena
9.
Wodogcnerlna b.rady.l
©onaerlpta.
Hodogsnerlna
flodosarla
imiiii
12.
lv
JL*x
.
li.i.i ih.i
hi i
—in i i»n ii.
■
♦
sp.
iiiTiiiSiii
ieotofroncaloulr.ria co
—fT"-~T~T^-
if--T-"Tn-**- -rf-r-firv-
,
-h ■T T-"inri
-liiri* inn
r-iii.irn.Wii
f lee tofr oiiqi©ul aria pae.ka.ydjL aut
■>ia lllllsl*
"
15
■-
a Lalmlng'p zone
ii
pp.
B*
10.
X4t*w
The following species were
Boll vlna n, -pp.
®*
JL
*I£»U
L-I,US Jsjg>.
"
17.
Evlgerlna g&rzaensis
«■■»***.*■»>**»
ii ii i iw*a*»aTßW****a*aar*a«*
iti*ai-*»i*ia>j>i*aiiiiiii
Uvl^erlna sp.
M-99
Kojoqui ©reek area.
On old Sojoqul grade, 900
feet southeast of road fork to fcoivang, and 2300 feet
e&st of new highway.
Collectors:
F. Relley,
February, 1940*
H.G* Schenek,
H* Drummond,
30
Formation
lodelo.
? annul e
5.
6.
Eulliafoa
ovula.
Sloblgerina
ant fin
ii
"■min
i i
bulloldes.
iin
i
iin
i
mi !■■■
i
».**«i
.£&£ JLE*
®*
rullenla cf* Salisbury!.
9*
L iphogenerlna hughes l
10.
t-vigcrinclla
inmumiiiiiiiiji.
»■
m.i'iin .i
ii
i
miM
©ellfornica carve*
n
nmniiwini imnti.i
«in
inuinii
«i mi
aitglTi ■»
mnii 1
■
M-luO
Mojoqui ©reek area*
101) east of Old
Outorop on main highway
Hojoqui ranch house*
Second
roadcut &4uu feet northeast of junction of old and
new highways,
B©ov feet northwest from M-99*
Sample #1 collected 85 feet north of highway
26 Ml. 1.5©
mark D-82
*
Sample #2 ©©lleeted 5 feet stratigraphically
higher than "#*!"
Sample #15 collected 12 feet stratigraphically
higher than sample #1
Sample #4 collected 17 feet stratigraphically
higher than sample #1*
Collectors
H* Drummond,
Formations
Unit XV
1940*
(Fauna is placed
Fauna
—
in Laiming 1 ©
j&©&©
t
XS&rWM* JMIIIi
ffAMft-tf&ff. 1* IS*
j_Ai* ft- £*"
JJLL
Sa^ g-wIM, ft* M*
Lent.allna communis
""tallna.
. .
:■.■-■.
vagina
■:.-.
.?.
:
. .
■aides Euyabalensls
i s.jlp
jion ides, yeguaeneje
»
aioblger-
■.mil
.1
-
niiimaiin
Rii- aides
sc-»
rginullnr S£,
«M**|la-*-
Kodoa*rie ©fi.
1e e tofr ondleul. aria
pp*
peudo^landulina ©f * laevigata
phax
sg
.
JObuIUS S£
Robulue welehi
PvigerlnP aff
vj
1
.
©hnrehi
...
imiiMi-
mi. in
1 rlni n* pp.
falvullneri® Involute,
M-101
aoadcut on west side of main highway
§00 feet
(U.
northeast of confluence of Hojoqui creek
101),
and
tributary from the southeast; 5000 feet north of fork
m
of old find new hi
g|
!§OO
feet south of Live
Dairy, g§Oo f m t north of 11-100.
Sample
#1 collected 00
mark B-109 ♦ 82 Ml.
?-
#&
■f
Collector!
H. Drummond, April,
FOT ma tions
Unit If
una placed in son-. > < of
l
Fauna
%
.aUiterlgerlna jh>»
imlna ©vat a
pupoidg
Buliiilna
Buliitlna ©f,
stalaefr-i
A"! l^i lE*
.Clbieidee
n*
Ovclapina
sp.
eg*
1,
MR* &
\& .ffi *
.
Porothiii ©f
epoenlca
gorpthljg
---asjls
qiobifierina
I?4^Mm
Globlf./'rijiii ,sp*
flyroldina of* danvil! ensis
Qyroldlna ..Qe.tooamereta
Haplopl i
-
> ■if.
old es trulllaata
a
opnr-ay;
u
ish
laplophr^gmoldes jj
j^irginulina exiai«
2££ElS2*2Jril£
sp.
Hodoflenerina
pj£.
&£stj£l2§MJ *? a i aria fcarzaenaip
HHIJ!ISSIiS-.ill t en©l © prima t a
"glina
Uvigerina
pp *
sp*
M-102
So j ©qui ©reek ar
90 feet
±
south of highway
,
Collector
Formation
e road cut re M-100.
Drummond,
irk
B-82*25.
Ml, 1,
April, 1940.
Gavlota*
5
Faumule Included In 2one ft of L sliming*
I .fllUJt
4'
;^i!2iß* &" MB
Robulus
sp.
.05
Mojoqui ©reek area
*
cut on wain highway
101), southeast from L$.YO Oak Dairy,
north of or
tropaimg*
100 t
1660 feet northe&et of con-
flu-snce of Hojoqul ©reek and tributary from the south-
last.
6300 feet north of fork of old and new highwayp
Highway mark on opposite side of
o&d (west side)
D-125+80.
F. Kelley,
Collectors-
fi.Q. Schenek,
H. Drummond,
February, 1940.
Unit IV.
Format ion ?
(Faunule places in zona .AS of L^lmlng).
FsunuTe
—
t
Boll vlna ap.
Bulimia* of. eepltete
lulisiM
j£.
Oibloldes ay.
"gponldeji ME_ea*
sp.
ponldee
Olobl&erina ap.
—— ____ an.
HeplophrajEmoides
—.rn.
i.
nffii.r
'r'
.MHMpNa*
Bodosarla
Pl estina sp.
M-104
Nojoqul creek area.
old and new highways.
V675 feet north of fork of
On west side of lojoqul creek,
north of Live Oak D^iry, and due west from gas station.
2800 feet north of confluence of Mo j ecu! creek and Its
tributary from the southeast.
Collectors t
formation?
R.O. Schenck,
H. Drummond, February, 1940.
Sierra Blsnoa limestone.
Ages
Boo#n
Florulas
Calcareous algae*
M-105
4SOO feet west of Bojoqui creek on south edge
of east-west trending valley, which is northwest front
Live. Oak Bf4ry, €760 fact northwest from ffojoqui r^nch
8876 feet northwest from fork of old and new
house.
5500 fe-t northwest from M-103.
highways.
Collectors
Formation f
Ages
.Drumaond, FLbrusry, 1940,
B. 0. Seheaek,
§
Sierra Blanoa.
Boson.*.
Calcareous algae.
Florulei
1-158
SSOU feet north
55°
east from 1021 hill.
feet west of main hi^iwey (1, I, 1011.
and north from L.S.J .li. 2£0;4.
v&ll©y northwest from
Col lee to:
Format ion i
--■roles
7000
SOOO feet west
lorth side of east-west
"Moonahine canyon*'.
" Drummond,
Februart, 1940.
Vaqusroa.
Ostraeodea and Foramlnlfera*
M-IS7
6200 feet south
39°
east from 1021
feat west &nd south from B-88.
junction of old end new road a.
hill.
7200
10,20U feet northwest from
■■'.
Drnmmond
Collector?
,
Apri 1 9 19 4u »
Unit IV
Formation*
.itmlß pieced in Laiming's
- mi
unulat
ollyiaf
»%♦
.na o^
Qfoiclflaa B* ££> 5
2XSi£;i
%8 #
SD.
is msxlsfefimi
aa
tr^xi
f l e c t ofron3 i e ul aria goofcgl
::-TKJioularla
I<*ptorondicu1 <*p torrondi c u I ':
.r t &n*
jyg »
tpfgiyge jTO*
£&lC
£hi
liOpUjL\lS jjf J*: »
JLxJL
2liE££iS£ &lab4tm.^nsis
SYi££SiSLS Jffi*
Uvlg&rlnellK
e 1
iea
ValTOlineriji involutft
n-im
3£oo faat south
51° east from 1021 hill. 92u0
feat due west from lff-101*
»0
»U « ScSkfl
*
9800 feat northwest from
37
-:>nd* April, 1940*
Collators
Unit XV
Formation!
(Faunul© plaatd In Leisiinj
!
s gone .
F ;^ml«
"■
""lin,^
Eponlflea
sjp *
Cllo'i
MP*
5i *
Mm.*
j-
lectin a
Hfo^li&x
g^»
ap
Hojbjulns. .sj?
Rot^llfetiiiM
gig
,
araeanarla gp»
»ri taxiline
aj
Trot
gp»
_ji£
y&lvullnarla %e org fins.
V&lvullnavlft involut
1*159
Sojo^ul creak
area.
1260 fMt aouth
from IS -138.
Collectors
H. Drußoaond, April, 1940*
Formation?
Unit IV
(Faumile placed
in Lslming's sons K;
61°
wast
Faunules
Cyclsmina n* g£.
glofrigerlna
bull oldes
PI e© tofr ondioularia
p&ekardl tauctores),
MKGAFOBSIL LOCALITIES
2217
lots;
A-887.
This locality equals liniv* Calif. Loc,
And Cal, Tech. Loc. 560.
On main highway (U. 8*
Hojoqul creek ?area.
lu!;, north end of first 1 rge eurved readout north
of Live Oak Dfiry*
B£7S feet north
826 feet north
M-103.
55°
14°
west from
west from junction of June
tion of highway and small read leading northeast to
10,800 feet north 82
house.
east from 19 £1
bill*
Opposite highway mark 0-157+99,
Collectors!
Formation i
H.G* Sohenck, li* Drummond, Feb* 1940.
Unit ill.
Faunules
FlcopeA-e
m>
Turritella uvaaama
gg!9
Mojoqul ©reek ar©a.
creek,
167S feet north
2°
On west side of Nojoqul
wast from the confluence of
39
Hoi ©qui preen and its msin tributary from th t
t.
i
ov Ih-
6400 feet north of the fork of the old &nd
highwaya.
ne*
1G,40u feet aouth 02° east from 1921 hill*
Outerop behind upper tank of Live Oak Dflry*
Collectors:
H.C. Schenck, H. Drummond, Feb*, 1940*
Forms ti on t
Unit 111,
Ftunule s
Amanrelllna mora&al
Flc op sis remondii
Ofri hornii
-"^:-.oro*e&llls.ta w
n*
©£.
Schedoeardls
brewer
,,
. ll
i.r-a.y.-m.iih.g.
i
mmmtmmm»miiwiMiimmtimmmim
"--i~rr-i
---itr i
i*i]iiiwiTr
Turritella cf « buwaldana
2220
On west side of Kojoqui creek, 900 feet north-
west from bridge leading to Live Oak Dairy.
west of highway*
Live Oak Dairy*
50U feet
On south side of first hill north of
2050 feet south of loc. 2218 and 1050
feet northeast of lo©. 2&19*
Collectors!
Formation?
H.G* S©henok, B. Drummond,
Unit 111.
Fa untiles
£chedo©ardia brewerlj
Turritella uvaeana
Feb*, 1940,
iojOx.nl ©r#e« area*
©eallty Is the south end
of ti© first road cut north of the far* of the old and
mOQ feet northveat of loo* ffel?«
'p.
feet southeast of ©M Mojequi ranc.-.
eoutl h- e east front
lector!
■■net ton:
""
E*
fftf
le*
2mvO
13# $0d feet
hill.
sad, r-arch,
1940*
a*vioi-.*
entile?
BiAE
iH*
..,: '\
niaKlffMiiiihil
..,
:
~:ia.Ti
-.
-.
1
jl"hi
»
i" -'WlUllfrira
«Si|fllpiirJM^^
,'Ui OJf. lfi£&\«_.
.-■
".-
-2 ■■ I--
*■"
...■
»
.ii ©reek
eat aide ©f ffoje
area*
'thwept frgm
©**©ekj §l^o
loo*
Dfe ®$ oZ& *nd a-
nor^'.
©out-
■
-66*
eat I
:;t-ctorr
3h, 1940*
:-'»cr«ulet
iJ^
Crj eg#t#l|,a jy^*
. v: XllataTt Jill*
4*#Qo feet
s-7^/ feet northweet from
H
8KB!
■"
££!?»
41
mmm mmu
■Swhedoeardla brewerll
lolen
sji*
iojoqul ©reek area*
®rm®&
ways*
moo
On the eppt aide of Kojoqul
feet northeast of fork of old md new high-
B^jQ
feet east of M-®a*
5700 feet aoutheast
from io®, S2lB*
Collector*
It* Drummond, May, 1940.
Formation t
aaviota*
annulet
££&MaiMit sMMm
MMM avfrntsf.
p-etcta of. teyjLpr^Pjft-w
l^i
JUfe*
.WUto
'
» '
fi* JUM*
2224
h
est of Mojoqul ©reek, 400u feet west of highway*
©You feet northwest of ©onfluenee of IMojoqul
©reek and Its m^in tributary from the aoutheast*
o
feet north 78 Q
Collector;
©rasatlons
"#"* **<» I*** &***♦
Drummond, Msreh, 1940*
Enit II
6900
-
a
"r
*
©pontes ,©owiitaeps|p
oral
M*MM l£*
HaoroQwlllgta
ILftt>mgr4iM
tajTlP
hornll
.li-tttaym
Pelluclda
rr I tell a "TH—i
2225
Lap
£ast fork of
Gruzm creek area,
creuk, 68uu feet west of main highway.
west from
C*. «*.-
loc. ££22.
9800 feet south
i-ae
78du feet
11°
Cruees
south-
east from 1921
*
Coll ©©ton
relation*
H,
Drtmmkond, May, 194U.
V&queros*
Tuj^itells varj^a,
unulet
ets.
2226
Las aruees ereek area.
®F€Bk*
5200 feet west of main highway.
west from M-SB.
.
»6Gu feet south
Collectors
:
formations
Vaqueroe.
Psunulet
Seat fork of Las Cruces
£6°
:,rumm©nd. May, 1*4%-
Same as loe* 2225,
785u feet south-
east from 19£1 hill*
43
LITERATURE CITED
TISKLL, Thomas,
ft©port% Facifl©
£Mi£sM iMJMM.*
VWI, 7,
pp. SB-74,
»■
ARMOID, E*,
2, Chapter X,
8.C., 1854*
and"
soureae
pt.
AHDERBOI, I*,
«(;■
v
and Oil
of the Senta fc~*rla Oil District,
m'ta Ba*fei*w County, California*, j|*f, oeol.
jury*
1
*
Bull*
.
10. 32g, IS!
56 plates,
ptges,
Washington, D*C, 19u7.
m&p p
DIBBLEE, Thomas W*, Jr., *Forsminiferel
Shale*, (Abstract)
Proceedings
©Jf
the apolog-
ies! Society of. iteeriea for 1936 (1937),
p.
* MS>% "
Vii 11 am L.
<
,
-snt
.'ity, Cf-liforn*.
eeedingp
-.-■■aaaiMi-jiai^gttß-^^
of the geologicalmm
mm**»
-mmmmim**.^
for 1955 (1956)
©*
M L?l,
ogy
-\enry
*-*r*jyii* Biii
Society
of
****&!&"* mtm**m
■*■**■■■»■Jma-********.
Pro-
Merles
mmm'mnmmmajmM^immmm)-
p. SSI.
J*, The
Stratigraphy
of a Portion of the
S/nta, Barbara
)
©ounty,
jnd Paleontol-
Santa^.e.P fountains *
$' lifornla* a thesis sub
mitted for the degree of ttaeier of Arts, Stanford University, 155 pages, 1 map, 9pls., May
Iwlv*
6*
K3 WM&M, Mrrvin Franelp, "The 800 en e Sierra Bianea
Limestone at the
type locality In Sr-nta
Barbara
44
county, California*1
,
Trans, S^n Diego Soc* Kat.
Hist., vol* VII, Bo* 8, pp. 55-84, pis. £-4,
text figs. 1-4, April 15, 1932.
i
"
KFRR, F.F., *Bentonlte from Ventura, California*,
'"'con, geol.. vol.
7 A.
:., P.F*,
26, no. 2, pp. 156, 157,
and SCHENCK, H.O*,
the Matilija overturn-',
rs
f
3l.
Signlf ioan©e of
fteol*
Soc.
.ftasr* Bui 1
..
vol. 39, pp. 1087-1101, 4 figs., 1928.
e*
KLBIHPELL, Robert M., Miocene
ifomla. m*r.
Okla., 450
pp*,
Assoc,
Stratigraphy
of Cal-
fetrcj.* Oeol*. fu^aa,
22 pie., frontispiece, 18
tables, 14 flga* In text, 1938*
w
*
LAIMIHO, Boris, *£ome Foramlnifera Correlations in
the Fo©en© of the San Joaquin Vallsy, Cali-
fornia*, Pr©£. o£ the Sixth PaeJLflc science
Congress,
10.
HELSOH, S.i.|
pp. 555-568, 9 figs* In text, 1959.
H
Geology of the Hydrographi© Basin
of the upper Santa Ynez River, California",
Dept* Geol, gel* , vol. 15,
*
Ho. 10, pp, 327-396, pis. 45-48, 1925.
UnlV, Calif. Bull
11.
D, E.D., and HOLLISTER, J.S., Structural Sy^-
lutlon of Southern California* M§£. Assoc.
Petrol,
Geo!.,
ni m ill
I
ii
I
—
Tulsa, Okla., 157 pp., 57
figs*, In text, 6* tables in text, 9 pis.,
1 map, 1936.
46
sr Eocene Orbltoid Foraminif-
■»
from th*s Western Santa Ynez R^nge, Cal-
?ra
ifornia, ma Their Stratlgraphl© Mgnifieance'%
,
l?r ng.
Sen Diego So©. Mat, Hist*
4, pp
145-170, pis. 15-17, July, 1930.
:
;
i
0
vol. 6, Ho.
of the Orbltoid -bearing Eoeane Limestone,
and Turritella vartafca Zone of the Western
ante Inez Range, California*', Tranp* Sag
Diego
So©. |at* Hist. vol. 6, no. 25, pp. 571-388,
August, 1931,
LITERATURE PREPARED TO IN PREPARATION OF REPORT
1m
BOUXB7 R# -J.S., and RFED, R,D*,
AUSR, San©,
©diaentation and Faltung in Sudllehen Kal-
lfornien% Stillc-Festschrlf t*
Ferdinand
Enke, Stuttgart, pp, 235-258, 4 figs, in
text, 1 map, I pi*, 1956.
14*
OLaKE, B*' L., "* Questioned Boundaries for the Marins Oligocene ©f Astern Horth America*,
bull. Qeol* So©,.
Aner.s vol. 43, p. 289,
Mareh, .1952.
15*
CLAM, B* L.,
and YOKES, H. E., "Summs-ry of Mar
-'tern Horth ikasr
in® Eocene
lea*', gull* Pool. M£* Amer*
»
vol. 47, pp.
831-373, 3 figs, in text, 2 pis., 19
14*
:
ogy ©f Horthem Ventura,
Santa Barbara, San Bern! to, San Luis Obispo,
Monterey counties*, Twelfth knn* Rent*.
Calif. State
Min. Bur., pp. 493-526, 17 figs,
in text, 1894.
17.
RUTSCH, R., *»Dle Stratigraphisehe Bedeutung der
Venerleardia planicosta und ihrer Verwandten*,
aeoloßieae Helvetlae. vol. 29, Ho. 1,
B&logae
pp. 151-186, 2 figs, in text, 1 pi*, Basel,
1936.
IB*
SOEBffCK* H.G,, md KLBINPBLL, R.M., *Rcfuglan
Stage of Facifie Coast Tertiary*,
ffull ,
Amer.
Assoo* ffetrol* Oeol.* v©!* 20, 10. P, pp. 215-
-225, February, 1936*
LITERATURE REFERRED TO IN IDENTIFICATION OF MEGAFOSSILS
19.
AHBERbOH, F*M., and BAMS A, S. Dallas, "Fauna and
Stratigraphic Relatione of the Taj on Eocene
at the type locality in &em county, Cali-
fornla
1
,
OcQasional raperp
o£ t^e.
Calif. A© ad.
Sol*, XI, pp. 1-^49, 10 flgP. in text, pis*
1-15, 1 map, Mareh, 1925.
20.
COHRAD, T.A.,
"Report on the Paleontology of the
Survey*, Pacific Railroad
Surveys,
vol. 7, pt*
2, Chap. 29, pp. 189-196, pis. 1-10, Washington, D.C*, 1866.
21*
DICitERSOH, ROY E.,
"Fauna of the Type Tejont It©
47
Relation to the CowlltP Phase of the Tejon
droup of *,rehlngton H
,
Froc* Calif* &&.s&* Sol*
4th Series, vol* V, Ho* 3,
pp*
33-98, pis*
1-11, 1915*
tr^tigraphy m& Fauna of the Tejon
*JJC*
Eocene of California*, Ujhiv* Calif* Fubl*
Bull*
563-824, pis. 36-46, May, 1916*
pp*
25*
9, Ho. 17,
SLtol* I©l*, vol*
g©£t*
fiAHA, Karons A#, n M Boeene Invertebrate Fauna
from the La Jolla quadrangle, California*,
pfillf*
univ*
16, Mo. 8,
24 »
tm%»
£uJJi.
pp*
ffep,t* £§©1*
iMi.*
*"*"
247-398, pis. 24-57, 1927.
Wayne, and CORE!, W* R*,
fhe Taqueros
R
Formation, Lower Miocene of California*
Paleontology*, Bail* £ftl«» &M*
I
fiti&U P»P*.
Geol. Scj»* Vol, 22, 10. 3, pp. 31-410, pis.
4-65,
2 maps, Oe©emb©r,
1932.
SYMJ0f Ralph 8., *aabb f e California Fossil
Typre Oastropods I*, Frog* Aca-fl, Mat* S©l* Philadelphia*
Vol. 08, pp. 287-447, 5 figs, in
text, pis. 20-30, 1937*
"aabb f s California Creteeeous and Ter-
26.
tiary Type Lamailibranehs* 1
tlon
pp*
,
!£" 5* Av-flfl* I*l* S©l*
1-314, pip* 1-17, 1930*
3pee.jaJL FublisaFh^ladelpjhJLa,
48
Olareaee
If*
"Btr tlgr ,ni© and Fatmal
""»■*§
V
ftelntione of th«
Imrlljses
to tlvs Cliioo and
:c- al
l*Pto* 2tJM«
t
pp* 41*
i
ili
*»*" f, lo* 4,
figs* in tattt* pis. ?~1# # July, 1917*
i,£i*
*"
1S4# 3
fee©
*
an
m-
?n%u#ros
igailons of
owper;.
vs @.f
"-* with
«i*»% ffJH*
i
4i#t* vol. 5,
I-* '..->
.
IHI
10,
}»©♦
rch t X
|ils* ***.'!,
IN
ainifere of t:
"wStim*>
ifea *©*"
,
3 pis*, --'
i
.»
.»--
"2s
. - - «fcC l&ti&
*# Pl*
1931*
-: ; $f l* # *1
;»3-
-'
'
j*
\
-*
-
'"
:«#'', a*»*meam^
lain E-igi«^«LJI «_i&L* «^i!«a«
1,
<%
iiiSL*»#
1-il, pis* 1-
Pj,.*
, t anv.
dl*
i?&
,
|\- .
J*
.
"* P^*
fn
f
*Boee«ie
.ifor-mla".
;
liylE** vol* 1*
*»^
-68, pla* 11-i*
a., and
it
*
»!#§*,
ii£S9SJp« giH^;»
lo* 2,
~-
%
,
De-aettber,
*»c v.,
lft-SD«
'*" edition-
49
-.y;iet &
af Gut*", £fntr*
from
,
"^orft t?s«
w-Of
":-
-
and a
mialf
\
1
p!
,
*r*
"
,
;J|#
1
a., to* if a,
"-*
- ,
pp* §s-
1986
■-P tern© ?r
J*?**
"■
g
CfUftttP
-
,- s : ire ef t
iforale.% ionjf* fiygM£ll MS*
51 -© 6
jt- , "
10, pt* 3# «©* 1
"
*
V: 1P «* 7 «*t
of
,
. 191
"I I
* B#*
rer: oods
-■"'-.'
"
©ox
jf
eofca***
11 f p.
fe* 4,
Wjmm.
afc*
Feri
luff, Al-
BMM**
*"*"
I >!©#
77-f
Date*
,
rem the
o*, "Poremlnlferft
end Mi
'mia*5
*o©->n-^ R*sr C© lin,
i6 »
Hi£* MM* Hi* a Itt _^Lat#
io* if pp*
r
pie* I^-14, April* XwS7.
fHfAfi, J* A* f end JAHVXS* f*
►-
fro® Trinid**d%
J
;*n
M* toa* * val
.-BjajMlHlUlJj.llllll
-
! -*
,
i** l * Rs* ft*
foramlfi-
> £a£pp*
6-17,
pie* £~3, Rareh,
n?*
11, tf. A. t and MM
©ea^
,
J* H«,
u-
Foraminifera from the Llajas F®»®ti©f* f
V'-ntur* ©ounty,
Ccllfonl*"*
%fourn* l»al»©** vol*
50
10, I©* S, pp* 497-Sl7, pie, 74-77, I .-jt
%
*■'
,
X-4f Septertw,
XoǤ*
«f:
.
4"
*
*
"?■? noes L», "frntw*
i:
-mt#* of Huliaia«%
on tmM
..
:.-.->. ..-:■
jt*
;-,
,
*
A*
«
* 41-46,
1
©
*
1«
,
X¥*
ay,
-
'■■'--''
from ,
iffI
I,* »«4aLi*
nlw*
19 C
/;;.«",
lißC*
punulee
inii
I§#
#B*^
J.
9, g
*"
:,
:
"-
-
'
- :V--..-
"' ,
v-^:--":-'--
.
40*
;.lnifera from the
.
'_,/ *?'*.'.
.--
"
.'"-
"
BSiMe*
'
:-:V, ;
r«,
*A*
Of ■&.-" *
-
.
A -ri**
j
»*
,
g
,u:*cv
wimifi
pi
kmMMm*
4i£ x_
"*£**>:.
IM
.bar,
ane
El»
*
R«n
.
''The CI-
Hssmti©® on tte« Coaetil t«eee
w» 4*
4,
-
.
4
,
iojffll*
Pr* SB4-41U, pis* 4i;-
THE NOJOQUI AND LAS CRUCES CREEKS AREA
LOMPOC QUAD- j SANTA BARBARA CO., CALIFORNIA
STANFORD UNIVERSITY EOCENE PROJECT NO. 93
GEOLOGY OF
LEGEND
'o*l
UJ
Z
UJ
O
2
8
Ti
SHALE
VI
VAQUEROS SANDSTONE
\El]
SESPE SANDSTONE AND CONGLOMERATE
GAVIOTA-SANDSTONE AND SHALE
UNIT HT-
{"UPPER markley" fauna)
UJ
Z
UNIT EL- SANDSTONE
UJ
o
o
UJ
H
(TEJON MOLLUSCS)
UNIT H-
iTsb 1
SIERRA BLANCA LIMESTONE
X.
SANDSTONE AND
PALEONTOLOGY
LOCALITY
MICROPALEONTOLOGY LOCALITY
M-0
00-00-r
MEGAFOSSIL LOCALITY
00-00-M
—
— 7 — 7— 7
U D tl
'
BED
7
4
V>
FAULT
FAULT
f
INFERRED
ACCURATELY LOCATED
SPRING
\
\
i
i
1000
IN FEET
LAS CRUCES
0.6 MILES
1
DATA TRANSFERRED
AIRPLAW" PHOTOS
BY H.
SPRING,