232 E. HA WORTH — THE OZARK UPLIFT AND ORE DEPOSITS 



point in the eastern part of Indian Territory north of the Arkansas 

 river northeast to the vicinity of Bismarck, in Saint Francois county, 

 Missouri. The periphery of the elliptical area passes through the 

 extreme northeastern part of Indian Territory, thence northeast into 

 Missouri by way of Jasper, Dado, Hickory, Morgan, Cole, and Franklin 

 counties, and swings around to the east and finally back to the south- 

 west through Washington, Saint Francois, Madison, Reynolds, Shannon, 

 and Howell counties, in Missouri, and crosses the line into Arkansas 

 through Baxter, Marion, Boone, and Carroll counties to the place of 

 beginning. The southern limit of the Ozark dome, however, is not so 

 definitely located as the northern, inasmuch as the Boston mountains 

 on the south either coalesce with the Ozarks, causing the boundary to 

 be carried much farther south, or approach so closely that the two are 

 practically united, depending upon the particular view one may take of 

 this relation. The width of what may properly be called the border 

 area varies from 25 to 40 or 50 miles, depending on the irregularities in 

 the nature of the uplift. 



311 XING DISTRICTS 



The principal mining districts and the areas of ore deposition where 

 mining has not yet been developed to any considerable extent may be 

 enumerated, following the directions as above. 



1. In the northeast corner of Indian Territory lead and zinc ores 

 occur in relatively great abundance, with mining development now in 

 the prospecting stage. 



2. The Galena-Joplin area, including the extreme southeast corner of 

 Kansas and parts of Newton and Jasper counties, Missouri, with borders 

 reaching into Lawrence and Dade counties and extreme outlying mines 

 in the northwest corner of Barry county and certain parts of Green and 

 Christian counties, in which area lead and zinc ores occur in sufficient 

 abundance to produce some of the richest mines in the world. 



3. The central Missouri district, with a crescent-like outline concave 

 southward, one limb reaching to the southwest from Morgan county 

 through southern Benton, Camden, Hickory, and Cedar counties, con- 

 necting with the Joplin area through Dade count}', the other limb 

 extending to the southeast through Miller, Cole, and Osage counties, 

 connecting with the southeast area through Franklin and Jefferson coun- 

 ties, an area particularly noted for lead ores, but in which there is a large 

 amount of zinc ore. 



4. The southeast mining district of Missouri, including Franklin, Jef- 

 ferson, Washington, Saint Francois, Madison, Iron, Wayne, Reynolds, 



