60 
SANTA MARIA OIL DISTRICT, CALIFORNIA. 
Fernando (upper Miocene-Pliocene-Pleistocene) fossils from the Santa Maria district , 
California —Continued. 
4469 
r-H 
4472 j 
CO 
u- 
4474 
4475 
I- 
rr 
Tfi 
i-H 
00 
4485 
4486 ; 
4487 
00 
00 
4489 
4490 ! 
• 
r—H 
O 
-V 
o 
TJ1 
Tf 
4506 ! 
4523 i 
Ta.nes of la.c,ineat, a Ca,mentor 
X 
X 
X 
X 
X 
X 
... 
X 
Tapes st.a.leyi Ga.bh 
X 
X 
Tapes tenernma Carpenter (PI. XXII, 
fie 10) 
X 
X 
X 
Tellina, sp 
... 
X 
Tel 1 i n a; a.ff bod egen si s Hinds 
X 
Terebratalia occidentalis Dali (PI. 
XXII, figs. 4a, 4b) 
X 
X 
X 
Thalotia caffea Gabb (PI. XXI, figs. 
4, 5) 
• 
■*7 u / - -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
Thra.eia. cf. trapezbides Conrad 
Thya.sira, a.ff gonldii Philippi 
X 
Tresus nuttallii Conrad 
X 
X 
Tritonium sp. indet 
X 
Trochita radians Lamarck (PI. XXI, 
fig. 1) 
X 
Trochita sp. indet 
X 
— 
Turritellacooperi Carpenter (PI. XXI 
fig- 11) 
X 
X 
X 
X 
X 
X 
Venericardia californica Dali (PI. 
XXIII, fig. 4) 
X 
4469. One hundred yards northeast of California Coast oil well No. 3,1 mile east of Divide, and 3 miles 
southeast of Orcutt. 
4471. Alcatraz asphalt mine, 3 miles east of Sisquoc. 
4472. Pennsylvania asphalt mine, 3J miles southeast of Orcutt. 
4473. Waldorf asphalt mine, 3 miles south-southeast of Guadalupe. 
4474. Railroad cut 1 mile north of Schumann station. 
4475. Fuglcr Point asphalt mine, 1 mile north-northeast of Gary, at head of Santa Maria Valley. 
4476. Asphaltum layer above Monterey shale, near Folsom well No. 3, Santa Maria oil field, 3 miles 
southeast of Orcutt. 
4477. Near Folsom well No. 4, Santa Maria oil field, 2J miles southeast of Orcutt. 
4481. Five miles N. 30° E. of Lompoc bench mark 95, in prominent sandstone beds around Purisma 
oil wells. 
4485. One-half mile south of Sisquoc. 
4486. Echinarachnius ashleyi horizon, immediately west of Santa Maria Oil and Gas Company’s well 
No. 4, 2 miles southeast of Orcutt. 
4487. Immediately east of head of Howard Canyon, 4 miles north-northeast of Los Alamos. Echi¬ 
narachnius ashleyi horizon. 
4488. On ridge south of road about 2\ miles northwest of Blake. 
4489. Southeast side of La Zaca Creek, where it empties from steep canyon; at base of asphalt sand¬ 
stone in shale, 8 miles north of Los Olivos. 
4490. Four miles east-northeast of Los Alamos, on Cuaslui Creek. 
4491. Gully 2J miles west-northwest of Blake. 
4492. One and three-fourths miles S. 5° W. of bench mark 425 of Los Alamos Valley, one-half mile 
northwest of sink on top of ridge. 
4506. One mile southeast of summit of Redrock Mountain, along ridge, near 1,700-foot knob. 
4523. One mile due south of Sisquoc, in ravine. 
QUATERNARY. 
GENERAL STATEMENT. 
Three distinct classes of Quaternary deposits younger than the latest 
Fernando can be differentiated in this region, although it is difficult 
to distinguish between them areally. They are terrace deposits, dune 
sand, and alluvium, each one of which as mapped may possibly rep¬ 
resent more than one period of deposition. They are deposits of 
comparatively little thickness laid down unconformably upon the 
older formations subsequent to the greater part of the disturbance 
and deformation that has affected the region. 
TERRACE DEPOSITS. 
GENERAL DESCRIPTION. 
Terraces are common in this region and are among the most promi¬ 
nent topographic features. They are fairly even surfaces, invariably 
