294 proceedings: geological society 



(1) Florida, (2) Tennessee, (3) South Carolina, (4) Arkansas, (5) 

 The Western States — Idaho, Wyoming, and Utah. 



In quantity available for the future the most important of these fields 

 is the last named one, where enormous deposits of high grade phosphate 

 rock are available for mining. Tennessee ranks second; Florida third; 

 South Carolina fourth; and Arkansas last. 



The Florida deposits are of three classes: hard rock, land pebble, 

 and river pebble, of which the land pebble is of most importance. The 

 Tennessee deposits are also of three classes, according to Hayes; brown 

 residual phosphate, blue bedded phosphate, and white phosphate. The 

 South Carolina phosphate occurs in two forms: hard rock, and river rock. 

 The phosphate of Arkansas occurs in bedded form. 



The deposits of the Western States are in northeastern Utah, south- 

 western Wyoming, and southeastern Idaho. The phosphate horizon 

 consists of 200 feet of phosphatic shales and beds of phosphate rock with 

 some limestone. The rock phosphate itself is chiefly characterized by 

 an oolitic texture, by which it can usually be recognized in the field. 

 In color it varies from coaly black to dull gray or iron stained. Its 

 float is characteristically marked with a thin coating of bluish-white 

 bone-like material, resembling chalcedony, and this coating is useful in 

 tracing the concealed outcrop in the field by means of scattered float or 

 fragments to be found in the overlying soil. 



Asbestos deposits of the United States. J. S. Diller. See this Journal, 

 1: 286. 1911. 



Further data on the stratigraphic position of the Lance formation ("Cer- 

 atops beds ,, ). F. H. Knowlton. 



In June 1909 the author published a paper entitled, "The strati- 

 graphic relations and paleontology of the 'Hell Creek beds,' 'Ceratops 

 beds,' and equivalents, and their reference to the Fort Union formation," 

 in which the conclusion is reached that the beds considered are "strati- 

 graphically, structurally, and paleontologically inseparable from the 

 Fort Union, and are Eocene in age." The present paper presents the 

 'results of the two field seasons that have intervened since the first paper 

 was published, the areas in which the observations were made being in 

 the main eastern Wyoming and eastern Montana and adjacent portions 

 of North and South Dakota. 



In the early nineties Hatcher discovered dinosaurian remains along the 

 North Platte River some 25 or 30 miles north of old Fort Fred Steele, 

 in Carbon County, Wyoming, the exact locality being indicated as 

 " opposite the mouth of the Medicine Bow River." This area was inves- 

 tigated in 1906 by A. C. Veatch, who published an outline geological 

 map in which was shown the areal distribution of the formations 

 involved. Strictly interpreted Hatcher's locality would fall within 

 Veatch's so-called "Lower Laramie," which is there 6500 feet in thick- 

 ness, and is separated from the overlying beds (Upper Laramie of 

 Veatch) by an unconformity which according to Veatch has involved the 

 removal of more than 20,000 feet of strata, but as a matter of fact his 

 locality is a mile or more up the North Platte from a point "opposite 



