NACOGDOCHES COUNTY. 



277 



of the office of the Lubricating Oil Company, is an exposure of twenty-four 

 feet of greensand shell marl, the upper layers of which are oil bearing. (See 

 Fig. 25, under Stratigraphy.) 



On the Day farm, now the property of the Lubricating Oil Company, is oil 

 well No. 1 , bored to a total depth of two hundred and fifty four feet. The 

 record of this well shows a surface drift of nine feet of red clayey earth, un- 

 der which is a bed in two layers of one hundred and eight feet of greensand 

 marl, of which the upper layer consists of fifty-nine feet of light bluish green- 

 sand shell marl, and under this is the second layer (in contact) of forty-nine 

 feet of dark bluish greensand shell marl. At a depth of two hundred and 

 nine feet another bed of dark bluish greensand shell marl twenty-nine feet 

 was drilled. 



About eight miles southwest of Nacogdoches, in the old San Antonio road, 

 is an exposure of calcareous shell rock, indurated by ferruginous infiltration. 

 The bed is about two feet thick and similar to the upper stratum seen at 

 Simpson's Hill, four miles northwest of Melrose, and was deposited at the 

 same time. 



About one- third of a mile east of the office of the Lubricating Oil Company 

 is an exposure of the upper stratum of shell rock overlying the greensand 

 marl and containing small white shells of Cardita, sp. ind., Ostrea settee- 

 formis, etc. 



About one mile southwest of the town of Cherino, at Pall's old saw mill on 

 Polesoto Creek, is an exposure of about sixteen and one-half feet of green- 

 sand marl, consisting of altered greensand, ten feet; shell rock, two feet; in- 

 durated green sandy clay, two feet; oil bearing greensand marl, twenty 

 inches, and shell rock, ten inches to water-line of the creek. 









ANALYSES OF GREENSAND 



MARLS 











No. 



o 



53 



<2 . 



."2 c 



p 



<B ° 



3 



3 



<3 



a 

 ao 



O 



j3 



O 





A-6 





688-f- 



30.50 

 32.00 



20.10 



24.47 



4.93 



14.49 



2.31 



5.18 

 11.20 



3.66 



6.22 



Trace. 



Trace. 



Trace. 



2.66 



4.89 



2.05 



Trace. 



1.90 



.66 



( 



.31 



.78 

 .37 



6 11.20 

 Trace. 



.13 



.74 



55 



.69 



41 

 .83 

 .75 



Trace. 



1 .29 



.32 



.19 



Trace. 



17.00 



689*.. . 



690* 



691* 



5 

 fa 1.55) 

 | l 5.90| 



4.60 

 32.34 



9.86 



13.50 



692f 



693* 



15.30 

 15.30 



24.40 



«1.85 



i 17.60 



17.14 

 18^75 



12.26 



6.30 



4.32 





c5. 

 4.45 

 2.83 

 2.96 

 1.14 

 2.03 

 3.52 



10 { 



.76 



Trace. 



.76 



2.05 



.68 



2.62 



5.70 



694* 



695* 



6.85 



24.26 



.82 



12.01 



696f .... 



697+ 



698f 



33.45 

 34.10 



47.10 



20.39 



14.58 



4 66 



5.36 



2.06 



21.43 



15.69 



14.94 



2.60 



1.65 

 8.28 

 6.83 



5.05 

 3.68 



2.81 



Trace. 

 Trace. 

 Trace. 



14.55 

 19.00 



7 90 



Analyses by * J. H. Herndon; f L. E. Magnenat. 

 a Manganese. 6 Carbonic acid. c As chlorides. 



