386 Noble — Geology of the Grand Canyon, Arizona. 



the southwest border of the Plateau Province, that a general 

 Archean structure may be unraveled and their relation to the 

 fundamental complex of the southern part of the territory 

 may be definitely established. 



Bibliography. 



References to the Bibliography are made by name and letter. 

 Thus : In referring to an article by Walcott, entitled " Pre- 

 Cambrian Igneous Pocks of the Unkar Terrane, Grand Canyon 

 of the Colorado, Arizona," ( Walcott, e) is inserted in paren- 

 thesis in the text and the reader will find the reference under 

 that name and letter in the Bibliography. 



Bibliography. 



Diller, J. S. a. The Production of Asbestos in 1907. Mineral 

 Resources of the IT. S. for 1907. 



Dutton, C. E. a. Tertiary History of the Grand Canyon District, 

 with Atlas. Monograph II, tS. S. Geol. Surv. 1882. 



Ransome, F. L. a. The Geology and Ore Deposits of tbe Bisbee 

 Quadrangle, Ariz. Professional Paper, No. 21, IT. S. G. S. 



Walcott, C. D. a. Pre-Carboniferous Strata in the Grand Can- 

 yon of the Colorado, Arizona. This Journal (3), xxvi, 

 1883 (Dec), pp. 437-442, 484. 



b. Study of a Line of Displacement in the Grand Can- 



yon of the Colorado in Northern Arizona. (Read 

 Aug. 29, 1889.) Bull Geol. Soc. America, I, 1890, 

 (Feb.) pp. 49-64. 



c. Pre-Cambrian Igneous Rocks of the ITnkar Terrane, 



Grand Canyon of the Colorado, Arizona, by 

 Charles D. Walcott ; with notes on the Petro- 

 graphic Character of the Lavas, by Joseph P. 

 Iddings. 14th Ann. Rept. IT. S. Geol. Survey for 

 1892-1893, Pt. 2, 1894, pp. 497-519 (Walcott) and 

 520-524 (Iddings), pis. lx-lxv. 



d. Algonkian Rocks of the Grand Canyon of the Colo- 



rado. Jour. Geol., Ill, No. 3, 1895 (Apr. -May), 

 pp. 312-330, pi. vi. 



e. Pre-Cambrian Fossiliferous Formations. (Read Dec. 



30, 1898.) Bull. Geol. Soc. America, x, 1899 

 (April) pp. 199-244, pis. xxii-xxviii. 



Auburn, N. Y., January, 1910. 



