HARRISON COUNTY. 117 



lar concretionary ores are also found in the same localities, and occasionally 

 in the neighborhood of the streams bowlders of conglomerate ore occur, but 

 usually of little or no economic value. 



Deposits of this class occur on the Josiah Prewett and southeast corner of 

 the John Johnson headrights. These deposits are chiefly ferruginous sand- 

 stones in small fragments, and lie upon the tops of small rounded hills of 

 brown sand. Another deposit occurs upon the southwest corner of the Eliza- 

 beth Carroll head right, about three miles from the Sabine River. The de- 

 posit here covers an eliptical shaped hill about sixty feet high, and is mainly 

 composed of broken laminated ore of the massive variety and ferruginous 

 sandstones, the sandstones greatly predominating. Near Roseborough 

 Springs, on the P. Lindsay head right, there is another deposit of thinly scat- 

 tered fragments of ore lying upon a light brown sand, which in turn rests 

 upon a stratified grayish white sand or sandy clay, with occasional red or 

 brown strata lying among the grayish white sand. On the J. P. Townly 

 head right, on the east side of the Sherrard Branch of Hagerty's Creek, there 

 are two hills of about eighty and one hundred feet elevation, and rising pre- 

 cipitously from the bottom lands along the creek. These hills are covered 

 with large blocks of ferruginous sandstone, but no iron of any class appears. 

 Another deposit of the same character occurs on the north end of the Hamil- 

 ton McNutt and Joel B. Crain headrights. This deposit consists for the most 

 part of a thinly scattered layer of ferruginous sandstone, with a few nodules 

 of concretionary ore. 



Throughout the non-iron ore bearing portions of the county there are occa- 

 sional thin deposits of ferruginous gravel, small pieces of ore, and sandstone. 

 These deposits do not as a general thing exceed an inch in thickness, and are 

 not more than a few yards square in extent. None of these deposits are of 

 any economic value. 



TOPOGRAPHY. 



The ore region of Harrison County appears to fo^m the remnant of an ex 

 tensive plateau, which extended from the northern part of the State south- 

 ward. This plateau-like region is cut off somewhat abruptly towards the 

 south and northeast portions of the county, and also shows that a considera- 

 ble amount of erosion has taken place in the northern part of the county. 

 All that now remains is the narrow flat-topped ridge extending from the 

 western boundary of the county eastward to about seven or eight miles north 

 and east of the town of Marshall. 



Along the southern margin the elevations of the ridge, as compared with 

 the lower stage of the country, show some abrupt changes within short dis- 

 tances. 



