266 University of California Publications in Geology [Vol. 8 



Massive white sandstone, 400 feet. 



Massive white and gray, medium-grained to fine, soft-weathering 

 sandstone, 300 feet. 



Shale and thin-bedded sandstone, 105 feet. 

 Medium-grained gray sandstone, 85 feet. 

 Fossiliferous limestone, 2 feet. 

 Lignite and carbonaceous shale, 12 feet. 

 Total, 1324 feet. 



The uppermost member in this series yielded a small but typical 

 Tejon fauna, which is as follows : 



Meretrix bornii Gabb. Tellina, cf. hornii Gabb. 



Spisula, cf. merriami Packard. Venus (?), sp. 



Tellina longa Gabb. Fish tooth. 



Tellina ovalis Gabb. Abundant fish scales. 



The two small areas of Tejon found on the north and south sides 

 of Sierra Cation rest unconformably upon the Chico. They consist 

 of the fine white to tan sandstone containing fish scales, the upper- 

 most member of the Santiago Coal Mine section. The following fauna 

 was obtained at University of California Locality 2343, a small Tejon 

 area on the north side of Sierra Canon : 



Cardium, cf. breweri Gabb 

 Solen parallelus Gabb. 

 Tellina, cf. longa Gabb. 

 Cadulus pussilus (Gabb). 

 Ancillaria, sp. 

 Bulla hornii Gabb. 



Cerithiopsis, sp. 

 Cylichna costata Gabb. 

 Ficopsis remondii Gabb. 

 Natica, sp. 

 Turritella, sp. 

 Tnrritella uvasana Conrad. 



The basal member of the Tejon in the area one and one-half miles 

 west of the Santiago Coal Mine consists of this fine sandstone. The 

 greatest distance separating these areas is not over a mile or a mile 

 and a half, yet we find this striking difference among the basal mem- 

 bers of the upper Eocene that in two of these. localities the basal beds 

 are the uppermost strata of the Santiago Coal Mine section which are 

 over a thousand feet above the basal strata of lignite and carbonaceous 

 shale of this section. Evidently the Tejon in this area was deposited 

 very near the shore line by a transgressing sea. This is demonstrated 

 by the fact that sediments were being deposited on the present site of 

 the Santiago Coal Mine long before the upper "fish-scale" sandstone 

 was laid down upon the Chico a mile or two away. 



