124 REPORT UNITED STATES GEOLOGICAL SURVEY. 



Si/nopsis of the geological formations found in Colorado — Continued. 



Locality. 



Mesa Verde . 



Trinidad region, 

 ton Hills. 



Ra- 



Near Caflon City . 



Near Golden City 



Fossils. 



Spheria lap idea, 

 Chondrites siibsim- 

 plex, C. bulbosux, 

 Delesseria fulva, D. 

 lingulata, Haly- 

 menites striatus, H. 

 major. Abie tit es 

 dubius, A run do 

 Ooepperti, Phragmi- 

 tes oeningensis, So,- 

 bal Campbelli, Fla- 

 bellaria longirachis, 

 Populus monodon, 

 P. mutabilis, Ulmus 

 irregularis, Ficus 

 ulmifolia, Platanus 

 Haydeni, Laurus 

 pedata, Andromeda 

 Grayana, Pombe- 

 iopisobtusa, Rham- 

 WIS obovatus, li. del- 

 etus, R. Fisheri, Ju- 

 glans Smithsoniana, 

 Carpolitus palmer- 

 urn. Pteris erosa. 



Sclerotium, rubellum,, 

 Delesseria fulva, 

 Halymenites stria- 

 tus, H. major, H. 

 minor, Woodwardia 

 latiloba, Pteris pen- 

 nceformis, P.aneeps, 

 P. affinis P. erosa, 

 P. subsimplex, J)i- 

 plazium Muelleri, 

 Aspidium Goldian- 

 urn., Sphenopteris 

 eocinica, S. membra- 

 nacea, Hymenophyl- 

 luin confusum, Se- 

 laqinella Berihoudi, 

 Abietites dubius, 

 Phragmites oenin- 

 gensis, Garax berth- 

 oudi. Smilax gran- 

 difolia, Sabal Camp- 

 belli. S. Goldiana S. 

 major, Flabellaria 

 zinkeni, F. latania, 

 F. fructifera Zingi- 

 berites undulatus, 

 Popxdus attenuata, 

 P. heliadum, Sa- 

 lix integra, Betula 

 gracilis, TJlmus 

 irregularis, Quer- 

 cus angu stiloba, 

 Q. chlorophylla, Q. 

 trian gularis, Q. 

 stramineus, Q. fur- 

 civcrvis, Q. Goldian- 

 us. Fagus pfronice, 

 Ficus tilicefolia, F. 



Character of strata. 



Yellow and brownish sand- 

 stones, mostly argillace- 

 ous. Sandy shales. Coal 

 near base. Shales chang- 

 ing into marls. 



Yellow sandstones and shales 

 near base. Some white 

 sandstone. Coal on top of 

 the latter. Then follows 

 a heavy series of gray and 

 yellow sandstones and 

 shales, with thin seams of 

 coal near top. 



Series of shales with inter- 

 strata of sandstones, some- 

 times massive. Coal at 

 several horizons. 



Sandstones and clays near 

 base. Alternating sand- 

 stones, clays, shales, and 

 bed of coal. Higher up 

 white and' yellow sand- 

 stones, sometimes con- 

 glomeritic. 



o o 



2 H 



800 



220 



3200 



