- J. 8. Diller — Cretaceous Rocks of No. California. 477 



of the 40th Parallel were measured by Mr. J\ Stanley-Brown 

 and myself. The measurements were made with Green's 

 square clinometer compass and a hundred-foot wire. Many 

 fossils were collected along the lines of the sections as well as 

 upon both sides. They have been identified by Mr. T. W. 

 Stanton, under the supervision of Dr. C. A. "White, who 

 kindly furnished information concerning the age of the rocks. 



Section on Elder Greek, Tehama Co., Col. 



Thickness in feet. 

 Thin sandstone with a large portion of shales 



-§ which are locally folded 1115 



(§ Massive sandstone with a few thin beds of shale 160 

 o Shales containing one bed of sandstone 25 feet 



S thick 665 



^ Massive sandstone . . 555 



Soft conglomerate containing Chico fossils 20 



Massive sandstone with thin conglomerates 397 



^ Shales 136 



(§ Massive conglomerate containing some limestone 



o pebbles.. 271 



"2 Sandstone, some shale and thin beds of conglom- 



5 erate . 320 



Massive conglomerate 43 



Some sandstone and shale, but chiefly conglom- 

 erate with Chico fossils 235 



? Apparent thickness of Chico beds, 3897 



. Shales with thin sandstones 552 



"I Shales 585 



•*J Sandstone 50 



| Shales containing two beds of sandstone, one 8 ft. 



5 and the other 12 ft. in thickness 2090 



| Shales and thin sandstones 1674 



j2 Sandstones and shales, then shales only 1158 



? Apparant thickness of Horsetown beds, 6109 



Shales, twisted and veined, containing Aucella . 1795 



es Shales with calcareous layers, (much covered).. 4968 



| " u " 5574 



2 Shales in belt 700 feet wide much folded 



4 Shales and shaly sandstones with calcareous 



J layers 2002 



J _ Shales and shaly sandstones, — small sandstones 



£-■§ increase, contain Aucella 3933 



^cq Shales and thin sandstones __ , 1702 



-§ Apparent thickness of unaltered Aucella beds, 1,9974 



Apparent total thickness of unaltered Creta- 



•^ ceous strata.. 2,9978 



