680 W. T. LEE STRATIGRAPHY OF COAL FIELDS OF NEW MEXICO 



No. Date. 



(P. 666) Near Canyou City, Colo., the shale which separates 

 the two plates of so-called Dakota sandstone was found to con- 

 tain a Comanche fauna. 



93. 1906. Griffith, William : Kinds and occurrence of anthracite coal. 



Min. Mag., vol. 1.3, no. .3, pp. 214-221, March. 19CK). 

 (P. 218) Brief reference is made to the Cerrillos coal. 



94. 1906. Jones, Fayette A. : Mineral resources of New Mexico. Am. Min. 



Cong., Sth Ann. Sess., pp. 1.35-143. 1906. 



(P. 143) Brief reference is made to the coal beds of New 

 Mexico. 



95. 1906. Keyes, Charles R. : Orotaxial significance of certain unconformi- 



ties. Am. Jour. Sci., 4th ser., vol. 21, pp. 296-300, 2 figs., April, 

 1906. 



A generalized section is given showing the position of certain 

 unconformities in the sedimentary rocks of New Mexico (two of 

 which— between "Dakotan and Coloradan," and between "Mon- 

 tanan and Laramian" — affect rocks described in the present 

 paper, but which are not confirmed by the present writer). 



96. 1906. Keyes, Charles Rollin : Geological section of New Mexico. 



Science, new ser., vol. 23, pp. 921-922, June 15, 1906. 

 A generalized geologic section is given. 



97. 1906. Lee, Willis T. : The Engle coal field, New Mexico. U. S. Geol. 



Survey, Bull. no. 285, p. 240. 1906. 



The coal beds of the Engle field contain numerous plant re- 

 mains and rest on rocks containing a Benton fauna. Lying 

 unconformably on the coal-bearing rocks are red sedimentary 

 rocks similar in general appearance to the Galisteo sandstone of 

 the Cerrillos field. Triceratops bones were found in these red 

 rocks. The correlation of the coal with that at Cerrillos and 

 Raton is suggested. 



98. 1906. Merrill, George P. : Contributions to the history of American 



geology. U. S. Nat. Mus.. Ann. Rept. 1904, pp. 189-733, 37 pis., 

 141 figs. 1906. 



Several brief sketches are given of the men who worked in 

 New ^Mexico and of the results obtained by them. Chapter X is 

 devoted to the Laramie question. 



99. 1906. RiTTER, Etienne A. : Les basin lignitiferes et houillei*s des Mon- 



tagues Rocheuses. Annales des Mines, 10° ser., t. 10. livr. 7. 

 pp. 5-84. 1906. 



(P. 52) The Fox Hills age for the Cerrillos coal measures is 

 accepted. 

 100. 1906. Schrader. Frank Charles: The Durango-Gallup coal field of 

 Colorado and New Mexico. U. S. Geol. Survey, Bull. no. 285, 

 pp. 241-258. 1906. 



A map is iiresented outlining the north, east, and south sides 

 of the principal i>art of the coal fields of the San ,Tuan basin. 

 Five groups of coal beds are mapped: (1) a Colorado group in 

 the southwestern part of the field; (2) a loivcr Montana group — 



