PALEOZOIC STRATIGRAPHY OF ROCKY MOUNTAINS 117 



VI. (Incomplete.) Antler Peak, Gallatin Range, Yellowstone Park, 

 Wyoming. 



VII. (Cambrian only.) On the ridge running west from the summit of 

 Livingston Peak, Livingston quadrangle, Montana, about one mile north of 

 "OldBaldy." 



VIII. Livingston Peak.- — On the south slope of Livingston Peak, on the 

 ridge leading to "Old Baldy" (the 9, 500-foot peak 1 mile southwest of 

 Livingston Peak), Livingston quadrangle, Montana. 



IX. Logan, Montana. — On the ridges north of the Gallatin River, opposite 

 Logan, in the Three Forks quadrangle, Montana. 



X. Teton River. — On the divide between Teton River and South Leigh 

 Creek, Grand Teton quadrangle, Wyoming. 



XL Blacksmith Fork (including the Cambrian). — Measured across the 

 ridges just north of the canyon of Blacksmith Fork, Cache County, Utah, from 

 Cottonwood Gulch to the crest of Logan Peak, west of Saddle Creek. 



XII. Manitou. — Measured on the ridges from one to two miles northwest 

 of Manitou, Colorado. 



STRATIGRAPHY 



THE CORRELATION DIAGRAMS 



Use of the diagrams. — Detailed descriptions of the 12 sections 

 above listed cannot be printed here. A consistent application of 

 the principles of correlation outlined on pp. 115, 122, however, has 

 made it possible to formulate a standard list of members. Each 

 of the 12 sections is made up of a part or all of the members in this 

 list (see pp. 123-28), and includes no others. By combining these 

 members in the manner indicated by the accompanying correla- 

 tion tables (Figs. 2, 3) and diagrams (Figs. 4, 5), every one of the 

 17 strati graphic sections used in the compilation of the list can be 

 reconstructed. For instance, the Devonian system in the Crandall 

 Creek section is made up of Member 1, with a thickness of 47 feet, 

 overlain by Member 2, 26 feet thick, which is followed by Member 3, 

 28 feet thick, and so forth. Even if some of the strata in a given 

 section be erroneously placed in the correlation table, yet the table 

 and the standard list of members will furnish a correct description 

 of that section, with accurate measurements of its constituent 

 parts. 



The description of each member is given in considerable detail, 

 but is sufficiently generalized in each case to cover all observed 

 variations in character from place to place. In the few cases where 



