50 CAI.Il'oltNIA ACADKMY 1>F SCIliNCES. 



Ill the region surniiimlini; ('arinelo Hay' uiv iiuincroiis terraces strewn with 

 houhlers luul pchhlos, more or less ceajented together, and in several cases witli tin; 

 adjoining rock surfaces sliowing horings which resenihle those of PJioladidea pcniict. 

 No fossils have heen found in these dep(»sits, hut Lawson helieves them to he of 

 Pleistocene origin. lie also helieves that there was an interruption in the Pleistocene 

 sedimentation, during which time erogenic movements took place. His conclusions 

 are hased on the linding of an unconformity between two of the terrace formations in 

 a section n<irth of Ahalone Point. 



Kairhanks" tells of a large area of Pleistocene sediments lying west of Corrali- 

 tos Creek and north of the .summit of the ridge. The beds are horizontal aiul consist 

 of indistinctly stratilied an»l slightly consolidated sand. This sand formation reaches 

 a maximum thickness of about three hundred feet. Fragments of shells are found 

 over the surface of the deposits up to an elevation of nine hundred feet. The only 

 shells positively identified from the surface of the beds are: 



Chiorontomn hrunnfHin Ilnliolh (f) Luuntia ffwhii Mi/titw^ cnti/oriiirua Pnrjiura CdnnVicnlata 



This fauna is similar to that of the Indian kitchen-midilens found at so many 

 places along the coast, and it seems probable that the shells are from deposits of this 

 kind. Their occurrence on the surface would add weight to this theory. Another 

 IMeistocene area in this Point Sal district is at the head of the valley north of the 

 dairy, and consists of fragments of bituminous shale, and a deposit of calcium carbon- 

 ate containing casts of Crepkhtla riujosn and a species of Ihtrpura. Fairbanks says 

 these beds are similar to those of Point Loma, near San Diego, " even to the presence 

 on the surface of small concretionary nodules of sand cemented by iron oxide." ^ 



From Mallagh Landing, two miles southeast of Port Harford, to Pismo, and 

 from Surf to Santa Barbara the sea-cliffs are capped by deposits of sand and gravel 

 which are probably of Pleistocene age. No fossils were found in any of the localities 

 visited; but in several places, noticeably northwest of Pismo, pholas-bored pebbles 

 were found at the contact between the Pleistocene .sands and the underlying eroded 

 Miocene shale, thus showing the marine origin of the Pleistocene deposits. 



Santa Barbara and Vici.nity. 



The Packard's Hill deposits are the most important of the fossiliferous 

 beds in the immediate vicinity of Santa Barbara. Packard's Hill is a ridge 

 about three hundred feet in height, which begins a short distance northwest of 

 the western end of the beach boulevard, and extends for nearly a mile due north. 

 Its eastern slope is almost precipitous, and outcrops of the fossil-bearing strata are 

 found over the whole slope. The best outcrops, and the one from which all the fossils 

 were obtained by the writer, are about two-thirds of the way up the hill. The hill 

 consists of layers of fine, soft, light yellow sand and marl, which is hardened in places 



' The Oeology of C»nDelo n»y By A. L»wnon. Bull Depl. Geol., Dniv. Cal., Vol. I., p. 62, tl siq. 

 » The Oeology of Point Sal Bjr H, W. Falrbinlu. Boll. Dcpt. Geol., Univ. Cal., Vol. II., 1896, p. 6-8. 

 ' Op. at., p. 8. 



