GEOLOGICAL EXCURSION IN COLORADO 6 



and Whitman Cross, and they, being more familiar with Colorado geology than I, 

 kindly prepared an itinerary for the proposed excursion. This itinerary was sent 

 to the geologists of the country, and a sufficient number of responses followed 

 to warrant carrying out the plan. Mr Emmons also spent much time in corre- 

 spondence with Colorado mining men and in perfecting arrangements with the 

 railroads. 



The rendezvous for the excursion was at Denver, August 15. The party con- 

 sisted of E. M. Bagg, Jr., Colorado Springs, Colorado; H. F. Bain, Idaho Springs, 

 Colorado ; E. H. Barbour, Lincoln, Nebraska ; J. C. Branner, Stanford University, 

 California; Samuel Calvin, Iowa City, Iowa; G. L. Cannon, Denver, Colorado; 

 R. T. Chamberlin, Chicago, Illinois; T. C. Chamberlin, Chicago, Illinois; C. R. 

 Eastman, Cambridge, Massachusetts ; S. F. Emmons, Washington, District of Co- 

 lumbia; H. L. Fairchild, Rochester, New York; J. W. Finch, Victor, Colorado; 

 U. S. Grant, Evanston, Illinois; J. C. Mersey, Leadville, Colorado; V. G. Hills, 

 Cripple Creek, Colorado; J. D. Irving, Washington, District of Columbia; W. S. 

 Kelley, Leadville, Colorado ; Arthur Lakes, Denver, Colorado ; H. C. Lay, Tellu- 

 ride, Colorado ; J. R. Macfarlane, Pittsburg, Pennsylvania ; J. D. Newsom, Stan- 

 ford University, California; H. B. Patton, Golden, Colorado; A. H. Purdue, 

 Fayetteville, Arkansas; C. W. Purington, Chester, Massachusetts; W. N. Smith, 

 Madison, Wisconsin; C. R. Van Hise, Madison, Wisconsin; A. N. Winchell, 

 Butte, Montana. Some of these men, however, were not with the excursion 

 throughout the entire trip. ' 



Professor T. C. Chamberlin acted as leader for physiography and the Pleistocene, 

 and Mr Emmons acted as leader for economic geology as far as Ouray. 



The itinerary of the excursion and the lines of study at the various points are 

 briefly. as follows: 



First day (August 16). The party left Denver in the morning, following the 

 plains along the base of the mountains to Canyon City, at the mouth of the Royal 

 Gorge of the Arkansas. 



Here Mr J. B. Hatcher met the party, and personally conducted it to the Dinosaur 

 quarries about 9 miles north of Canyon City, up Four-mile creek. Mr Hatcher had 

 a party at work quarrying the bone-bearing beds of the Jurassic, and for the first 

 time a number of the party saw Dinosaur bones in place. During the drive an 

 excellent section of the Colorado formations from the Silurian to the Jurassic was 

 seen along the front of the mountains. 



Second day (August 17). The party divided. The larger number of the party 

 went on foot from Canyon City through the Royal Gorge of the Arkansas to Park- 

 dale, a distance of 11 miles. The major part of this distance furnished a magnifi- 

 cent section of the Archean complex in typical development. At Parkdale a very 

 interesting basin of Mesozoic rocks resting upon the pre-Cambrian was seen. That 

 portion of the party remaining at Canyon-City occupied the morning in studying 

 the locality containing Silurian fish, studied and described by Walcott. The train 

 carrying the united party left Canyon City at 1.15 p m, following the Arkansas 

 valley to near Leadville, over the Tennessee pass, and thence down the valleys of 

 the Eagle and Grand rivers to Glenwood Springs; thence to Aspen. 



Thjrd day (August 18). The entire day was spent at Aspen, studying the mines, 

 the complex faulting of the Paleozoic strata, and the glacial phenomena. The 

 party left Aspen in the evening for Grand Junction, 



