PEALE.J GEOLOGY FORT UNION OR GREAT L1GNITIC GROUP. 143 



Fort Union or Great Lignite group — Continued. 



Locality. 



Description of strata. 



Age. 



Authority. 



Reference. 



Raton beds 



ApishpaCreek, Span- 

 ish Peaks,antl Trini- 

 dad, Colorado. 



Raton Pass, Purga- 

 tory Gallon. 



Raton Mountains . . . 



Coal-beds of east 

 edge of mountains 

 in Colorado. 



Fisher's Peak, Raton 

 Mountains. 



Raton Mountains . . . 



Central and North 



Colorado. 

 Lignites of Colorado 



Basin. 



South Park,northeast 

 of Fair Play. 



Grand River, in Mid- 

 dle Park. 



Mount Bross, in Mid- 

 dle Park. 



Troublesome Creek 

 and Willow Creek 

 in Middle Park. 



Troublesome Creek 

 and Mount Bross 

 (Middle Park). 



Middle Park, Mount 

 Bross. 



Placer Mountains, 

 south of Santa Fe, 

 NewMexico(Placer 

 Mountain Group). 



Lignitic beds of New 

 Mexico (at least as 

 far south as Placer 

 Mountain). A n - 

 thracite coal. 



Lignite, beds of New 

 Mexico and San 

 Juan. 



Sandstones and clays 

 over! yi n g Greta 

 ceous layers. 



Yellow and gray 

 sandstones and 

 laminated arena- 

 ceous clays. 



Cretaceous. 



LeConte . 



Tertiary . 



Eocene . - 



Lower Eocene . . 



Lower Tertiary . 



Eocene 



Hayden 



Lesquereux. . 

 ...do 



American Lower 



Eocene. 

 American Lower 



Eocene. 

 ...do 



Cretaceous 



Upper Cretaceous 



Hayden 



Lesquereux. 



...do 



...do 



...do 



Cope 



J. J. Stevenson 



Lignitic Tertiary. 



Lignitic Tertiary 



Older Tertiary . . . 



Lower Tertiary . 



Havden 



.do 



American Upper 

 Eocene orLower 

 Miocene. 



Upper Miocene. . . 



Lower Tertiary . . 



American Lower 

 Eocene. 



Cretaceous . 



.do .... 



.do 



Lesquereux. 



.do 



Hayden . 



Lesquereux . 



Newberry 



Report Exploration 

 Smoky Hill Rail- 

 road route, 1868, p. 

 66. 



...Do., p. 153. 



Report U. S. Geol. 

 Survey, 1871, p. 306. 



Report "U. S. Geol. 

 Survey, 1872, pp. 

 410-417. 



Report U. S. Geol. 

 Survey, 1867-'68 

 -'69, p. 189. 



Supplement to Fifth 

 Annual Report U. S. 

 Geol. Survey, 1871. 



Report U. S'. Geol. 

 survey, 1873, p. 366. 



Report U. S. Geol. 

 Survey, 1873, p. 366. 



American Journal of 

 Sciences and Arts, 

 vol. vii, June, 1874. 



Report U. S. Geol. 

 Survey, 1873, pp. 

 453, 454. 



Proceedings of So- 

 ciety of Nat. Hist., 

 city of New York, 

 2d series, No. 4, 



. 1»74, pp. 93, 94. 



Also "Geological Re- 

 lations of the Lig- 

 nitic Groups," road 

 before Amer. Phil. 

 Soc, June 18, 1875. 



U. S. Geol. Survey 

 Report of 1 867-' 68 

 -69, p. 179. 



Also Report U. S. 

 Geol. Survey, 1873, 

 p. 38. 



Report of U. S, Geol. 

 Survey of 1867-'68 

 -'69, p. 183. 



Also Report U. S. 

 Geol. Survey, 1873, 

 p. 81. 



Report U. S. .Geol. 

 Survey, 1867-'(i8 

 -'69, pp. 183, 184. 



Report for 1873, p. 81. 



Report U. S. Geol. 

 Survey, 1873, p. 82. 



Report U. S. Geol. 

 Survey, 1873, p. 366. 



.Do., p. 366. 



Report U. S. Geol. 

 Survey, l867-'68 

 -'69, p. 190. 



Report U. S. Geol. 

 Survey 1873, p. 366. 



Also Amer. Jour, of 

 Sciences and Arts, 

 vol. vii, June, 1874. 



American Journal of 

 Sciences and Arts, 

 vol. vii, April, 1874, 

 p. 90. 



Some of the localities included in the table just given will be given 

 in some of the tables to follow. I will not attempt to account for the 

 discrepancies. I have quoted the opinions relative to the age of the 



