Page 6 - wintererdurham1962

IV
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Structure—Continued Occurrence of oil—Continued
Structural details------------------------------- 335 Oil fields—Continued
Santa Susana Mountains and San Fernando Newhall—Continued
Valley----------------------------------- 335 Tunnel area---------------------------- 343
Santa Clara River to San Gabriel fault- - - - - - - - 336 Elsmere area--------------------------- 343
San Fernando Pass and Newhall area- - - - - - - - - 336 Whitney Canyon area- - - - - - - - - - - - - - - - - - - 344
San Gabriel fault to north edge of mapped area-- 337 Newhall townsite- - - - - - - - - - - - - - - - - - - - - - - 344
Geologic history------------------------------------ 337 Placerita----------------------------------- 344
Occurrence of oil------------------------------------ 340 Newhall-Potrero-- - - - - - - - - - - - - - - - - - - - - - - - - - - 345
Oil fields--------------------------------------- 340 Del Valle---------------------------------- 345
Newhall----------------------------------- 340 Ramona----------------------------------- 346
Pico Canyon area----------------------- 341 Castaic Junction---------------------------- 347
De Witt Canyon area- - - - - - - - - - - - - - - - - - - 342 Wildcat wells----------------------------------- 347
Towsley Canyon area-------------------- 342 Potential petroleum resources- - - - - - - - - - - - - - - - - - - 347
Wiley Canyon area---------------------- 342 | Selected references--- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 357
Rice Canyon area----------------------- 342 Index--------------------------------------------- 363

ILLUSTRATIONS
[Plates in pocket]

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PLATE 44. Geologic map.
45. Geologic sections. FIGURE 56. Soft greenish-gray siltstone and fine-grained
sandstone beds of the Sunshine Ranch
46. Stratigraphic sections in the Towsley forma
tion. . member of the Saugus formation--------- 31S
47. Stratigraphic sections in the Pico formation. 57. Conglomeratic sandstone of the Saugus for
mation------------------------------- 3.19
48. Distribution of Foraminifera in the Pico for
58. Sandstone and siltstone beds in the Towsley
mation, Pico Canyon section.
49. Distribution of Foraminifera in the Pico for formation-----------------------------
59. Types of deformation of sandstone-siltstone
mation, Towsley Canyon, and other sections.
interface resulting from unequal loading,
Page by which load casts are formed - - - - - - - - - -
FIGURE 49. Index map------------------------------
277 60. Load casts in the Towsley formation - - - - - - -
50. Erosion and river-terrace surfaces on the
61. Load casts in the Towsley formation - - - - - - -
north side of the Santa Clara River - - - - - -
280 62. Intraformational breccia in the Towsley
51. Concretionary sandstone unit in the Towsley formation----------------------------- 328
formation-----------------------------
290 63. Large angular erratic block of shale in the
52. Contact of the Towsley formation with
Towsley formation --------------------- 329
quartz diorite of the pre-Cretaceous base 3.31
292 64. Current bedding in the Towsley formation - -
ment complex-------------------------
65. Current lineations in the Towsley formation 333
53. Large-scale sets of cross-strata in the lower
294 66. Slump structure in the Towsley formation.-- 333
part of the Pico formation - - - - - - - - - - - - - -
54. The relation between contemporary deposits 67. Paleogeography of beginning of late Miocene
309 time---------------------------------- 339
of the Saugus and Pico formations- - - - - - -
55. Conglomerate, sandstone, and siltstone beds 68. Paleogeography of part of late Miocene (late
of the Pico formation------------------- 3.11 Mohnian) time------------------------ 339
TABLES
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TABLE 1. Fossils from Eocene rocks------------------ 283 | TABLE 7. Oil- and gas-producing zones in four major
1
2 . Foraminifera from the Modelo formation - - - - 288 fields west of Newhall - - - - - - - - - - - - - - - - - - - 341
295 8. Oil -production statistics for period January 1–
3. Foraminifera from the Towsley formation----
June 30, 1953-------------------------- 341
4. Fossils from the Towsley and Pico formations 346
296 9. Oil- and gas-producing zones in Del Valle field
5 . Geographic range of Recent species related to
10. List of wildcat wells including all known pros
fossils from the Towsley formation-- - - - - - -
308 pect wells drilled outside of productive oil
6. Distribution of varieties of Calicantharus fields prior to June 30, 1953-------------- 348
humerosus (Gabb)----------------------- 321 11. Fossil localities--------------------------- 360