. Bulletin of the United States Geological Survey--The Santa Clara Valley, Puente Hills and Los Angeles Oil Districts. er and the Ojai Valley beyond Piru Creek. East of Santa PaulCreek the strata are strongly bowed to the south. At Sespe Creek thcurvature is as pronounced in the opposite direction. Immediatelywest f Hopper Canyon the convex side of the bend is again to thsouth, while east of Pirn Creek regularity of trend is once more ap-proximately resumed. North and east of the Ojai Valley the southInn!) of the Topatopa anticline is overturned. An examination of the map makes it obvious that

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. Bulletin of the United States Geological Survey--The Santa Clara Valley, Puente Hills and Los Angeles Oil Districts. er and the Ojai Valley beyond Piru Creek. East of Santa PaulCreek the strata are strongly bowed to the south. At Sespe Creek thcurvature is as pronounced in the opposite direction. Immediatelywest f Hopper Canyon the convex side of the bend is again to thsouth, while east of Pirn Creek regularity of trend is once more ap-proximately resumed. North and east of the Ojai Valley the southInn!) of the Topatopa anticline is overturned. An examination of the map makes it obvious that faultsare thedominant structural feature in the Ojai Valley, at the west end of theterritory under discussion. No less than five fractures cross theregion from east to west, divergent in trend from N. 60° W. at thenorth to S. 75° W. at the south. The result has been a succession ofinterfault blocks more or less limited in size, with considerable varia-tion in the strata opposed. The faults originated nearly at a commoncenter in the great fracture passing in front of San Cayetano Moun- 111 Secv level NE.

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