CONTENTS. IX 



Facing page — 

 No, 8, (folded.) Geological map of the Middle Park, sliowing the positions of the 



. sections on Plate III 154 



No. 9. Sketch-map showing the glacial moraines in the valley of Grand Eiver, 



near Grand Lake, Middle Park 158 



No. 10, (folded.) Geological map of the region "in the neighborhood of the Hot 



Springs and the Upper Grand, Middle Park 162 



No. 11. Section ten miles southeast of the Hot Springs, near the junction of the 



Grand Lake and Hot Springs roads, Middle Park, (see Fig. 10, section CD). 164 



No. 12. Lake-beds four miles southeast of junction of Frazier and Grand Elvers ; 



dip, 10° east; W.H.Holmes 166 



No. 13. Profile of lignitic terraces on north side of Grand Eiver, four miles above 



the Hot Springs, Middle Park, (see section F, Fig. 10) 166 



No. 14. Volcanic breccia bed, one-half mile north of Grand Eiver, above the Hot 



Springs, Middle Park ; W.H.Holmes 167 



No. 15. Diagram section at the Hot Springs, Middle Park, showing probable sec- 

 tion after the erosion of the Hot Springs fold, and before and during the 

 deposition of the lignitic beds 168 



No. 16. View east up Grand Eiver from Mount Bross, Middle Park, showing the 



breccia basin and inclosed lignitic beds, &c 169 



No. 17. Sketch-map of Park View Peak and vicinity, showing the trachyte dikes 

 penetrating the nearly horizontal lignitic rocks, and the relation to the 

 topography 174 



REPORT OF A. C. PEALE, M. D. 



131 + 1 5 F'S- !• S^^tiou near South Platte Caiion ? -.qc 



riaiei, ^ pig. 2. Section along Willow Creek 5 ^^^ 



Plate 2. Section near Pleasant Park 198 



■pi , q 5 ^ig. 1. View showing turn in bedsbelow the Garden of the Gods ) c)f]n 



riaTe.3, ^ pig. 2. Section from Glen Eyre east 5 "^^^ 



Plate 4. Sections giving comparative thickness of sedimentary strata 204 



p, , - ( Fig. 1. Section across the Front range, 11 miles ) 



riateo, ^ Fig. 2. Section at A B of Fig. 1 , S 



f Fig. 1. Section across South Pai-k "^ 



Fig. 2. Section across the Little Platte ! 



I Fig. 3. Section near Hoosier Pass | 



Plate 6, I Fig. 4. Section from Mouut Guyot east 



(folded.) I Fig. 5. Section through Mount Bross and- Mount Lincoln 



Fig. 6. Section through Mount Bross 



Fig. 7. Section across the Little Platte above the Salt Works.. 



, Fig. 8. Section through Bufl:alo Peak 



Plate 7, Figs. 1, 2, and 3. Faults on, Mosquito Gulch, south side 228 



SFig. 1 . Fault in Mosquito Gulch, looking south ^ 

 Fig. 2. Fault in Mosquito Gulch, looking north > 228 

 Fig. 3. Fault in Buckskin Gulch ) 



Plate 9, ^ Fig. 1. Natural section, side of Four-Mile Creek 



(folded.) /^Fig. 2. Continuation of Fig. 1, dowc Iowa Gulch 



Plate 10, Figs. 1 and 2. Intrusion of volcano rock east of Horseshoe Mountain . . . . 232 



Plate 11, Figs. 1, 2, and 3. Sections at head of Iowa Gulch 234 



Plate 12. Section through Weston's Pass 236 



Plate 13. Schist included in volcanic rock 241 



Plate 14. Block of breccia. Grizzly Peak 241 



Plate 15. Dike on Cascade Creek . . ; 252 



Pls>te 16. Folding and faulting in cliff on Teocalli Creek 253 



Plate 17, folded. View up East Eiver 256 



L Fig. 1. [Section through Gothic Mountain] ) 



Plate. J 8, < Fig. 2. [Section across Eock Creek near its head] ^ 258 



( Fig. 3. [Section on Eock Creek south of Snow Mass Mountain] ^ 



SFig. 1. Section across Eoariug Fork ) 

 Fig. 2. Section southwest of Eoaring Fork > 263 

 Fig. 3. Section north from station 82 ) 



SFig. 1. Section from Sopris to Capitol, 9 miles ) 

 Fig. 2. [Section at right angles to section on Fig. 1] > 265 

 Fig. 3. [Section from Eoaring Fork to Frying Pan Creek] ) 



208 



> 213 



230 



