64 GEOLOGICAL REPORT. [1108, 104 



103. The point furthest X. at which clays distinctly bearing the character of 

 this group have been found, is in wells near Honey's Mill on Yellow Creek, about 

 S. 18, T. 3, R. 10 E. ; further N. the Orange Sand strata either conceal the older 

 formations, or the non-fossiliferous, yellowish sands arc of so indefinite a char- 

 acter, that 1 have been unable to determine their age and position. Southward 

 of this locality we iind (besides those mentioned) characteristic outcrops of 

 laminated clay at Mr. llubbards, S. 27, T. 3, R. 10 E. ; at Cartersville ; at 

 Peden's MilLS. 9, T. 5, R. 10 E., Lindsay's Mill, S. 1, T. 6, R. 9 E., and Gurley's 

 Bridge, S. 14, T. 6, R. 9 E., above Grisholm's Factory — all on Mackay's Creek; 

 at llutchins' place, S. 7, T. 5, R. 11 E. On the waters of Little Brown's Creek, 

 on S. 9, T. 5, n. 9 E., and at Taylor's Mill, S. 10, T. 5, R. 9 E. Also, 1 mile 

 E. of Marietta, Itawamba county. 



At other points in Tishomingo, nearer to the line of the Tombigbee Sand, 

 we find bluffs of non-calcareous, yellowish sands with only occasional bands of 

 dark colored clay — thus at Haygood's place, S. 8, T. 5, R. 10 E.; at Tims' place 

 S. 3, T. 5, R. 9 E., and at Moore's, S. 30, T. 6, 11. 9 E. A few miles further W., 

 on Big Brown's Creek, we strike the calcareous Tombigbee Sand. Yet even on 

 the territory enclosed on all sides by clay outcrops, deep wells sometimes strike 

 nothing but sand, similar to that at Tims' place, and bluffs show the same material. 

 The blue or black laminated clays are found, as has been stated, in many 

 localities in the southern portion of the carboniferous territory of Mississippi. 

 It is very commonly struck in wells in TT. 5 and 6, RR. 10 and 11 E., at a depth 

 of 20 to 30 feet, 



104. Outcrops of laminated clays alternating with sand occur with frequency 

 on Mackay's Creek, from Bay Spring down to its mouth, in Itawamba county. 

 One of these, on a "caved" hillside, at Warren's mill, of which a section is 

 given below, is of unusual interest on account of the fossil remains of trees 

 which it contains, in the shape of lignitized trunks, obscure impressions of leaves, 

 and lumps of fossil resin. The lignitized trunks being copiously incrusted with 

 iron pyrites, induced a company of Georgians to commence mining operations on 

 this spot, by driving a gallery into the lower, lignitic stratum ; the work, 

 however, was soon abandoned. 



