380 GEOLOGY OF NORTHWESTERN TEXAS. 



SECTION NO. 24, CANYON DIVISION. 



On the Weatherf ord and Graham road, at Little (or East) Keechi Creek. 



1. Limestone 4 feet. 



2. Yellow clay, fossiliferous 25 feet. 



3. Sandstone 2 feet. 



4. Yellow clay, with cla}^ ironstone 30 feet. 



5. Sandstone, massive. . . . 8 feet. 



6. Bluish clay, ironstone concretions , 10 feet. 



Total. T9 feet. 



The following is a list of the fossils taken at this place: 

 Aihyris subtilita, Hall; Bellerophon carbonarius, Cox; B. perca?'inatus 7 Con- 

 rad; C honetes, sp. ind. ; Conularia critslula, ^Wliite; Discina convexa, Shumard ; 

 Lophopjhylhim proUferum, McChesney; Productus com, D'Orbigny; P. costatus, 

 Sowerby; P. nebrascensis, Owen; P. symmeiricus, McChesney; P. longispinus, 

 Sower by; Pleurotomaria splcerulata, Conrad; Spirifer lineatus, Martin; S.came- 

 ratus, Morton; Terebratula bovidens, Morton. 



At this place I found traversing No. 2 of above section what appeared to 

 be a dyke, but upon closer inspection proved to be a seam of fossiliferous 

 limestone. The seam is about two inches thick, and has a course of north 

 60° west. We sunk a pit by the side of the seam, and found it to be almost 

 vertical, and the clay undisturbed on both sides of it. It is broken in pieces 

 which are very uniform in size. The material is very compact and is not 

 stalactitic, yet it does not resemble any other limestone in the vicinity. I was 

 unable to account for the position of this limestone. The seam runs in about 

 the same direction of the fracture in the surrounding strata. 



SECTION NO. 25, STRAWN DIVISION. 



Made at Mountain Springs, five miles east of the last section. 



1. Yellow and bluish clay 40 feet. 



2. Yellow limestone 2 feet. 



3. Yellow clay 22 feet. 



4. Limestone, water bearing 6 feet. 



5. Yellow clay 30 feet. 



6. Limestone, cherty * 3 feet. 



Total 103 feet. 



The cherty limestone in the above section is the same as was found in the 

 bed of East Keechi Creek and at the base of the .preceding section. The 

 massive water bearing limestone is the same bed as is found at Palo Pinto 

 and at Canyon. 



