DESCRIPTIVE DETAILS I CERRILLOS FIELD 



651 



South and west of the locality just described on Galisteo Creek the 

 rock formations are well exposed and were traced to Rogers, an aban- 

 doned coal camp situated on the western limb of the syncline. The rocks 

 strike nearly north and south and dip 9 degrees east. A section was 

 measured by tapeline from the old Rogers mine westward across the 

 strike of the upturned rocks to a point at the base of the Cretaceous about 

 a mile south of Galisteo Creek. This section may be combined with the 

 Galisteo Canyon section of the Manzano group published by the writer 

 several years ago (110 B, page 18). 



Section of Rocks measured near the old Rogers Mine, tico Miles southwest of 



Cerrillos, New Mexico 



Feet Inches 

 Conglomerate (Recent). 



Shale, sandy 25 



Sandstone, yellow S 



Sbale, sandy, yellow 10 



Sandstone, massive 12 



Shale, sandy, light-colored 15 



Sandstone, massive, gray 10 



Shale and sandstone in alternating layers 68 



Sandstone, massive, coarse-grained, friable, loose- 

 textured to quartzose ; locally conglomeratic ; 

 variable in thickness and character ; contains 

 fossil plants; Abietites duhius (?) Lesq. ; Geono- 



mites sp. ; Dryopteris ? sp 10±: 



(Unconformity by erosion.) 



Coal, thickness irregular, due to erosion; 



absent in some places 2dt: 



Sandstone, shale, and thin beds of coal in alternat- 

 ing layers ; contains fossil leaves, conifers and 



'Nelumho intermedia ? Kn 65 



Coal (Rogers opening) 4 



Shale and sandstone ; the shale carbonaceous in 



some places with thin seams of coal 105 



Sandstone in massive layers separated by thin beds 



of shale ; forms the crest of a ridge 105 



Sandstone and shale in alternating layers ; contains 

 concretions of brown sandstone 140 



Galisteo \ 



Mesaverde 



Coal 



Shale (0 to 10 feet) 



Coal 



Covered 



Coal, dirty 



Shale with yellowish limestone concretions, con- 

 taining Ostrea sp. related to O. soleniscus Meek. . 



Coal 



Sandstone and shale 



Coal 



XL VI— Bull. Geol. 8oc. Am., Vol. 23, leil 



1 

 5 



2± 

 31 



1± 



15 

 

 5 

 



