THE LOUISIANA FIELDS 



711 



fe.ssioiial Paper Number 46, United States Geological Survey). On the 

 north the uplift is partially bounded by a somewhat narrow and sharp 

 syncline, from which the strata rise again northward to the Eed Eiver- 

 Alabama Landing fault. Veatch draws the probable extension of this 

 fault from the Eed Eiver Valley north of Sherman, Texas, all the way 

 across northern Louisiana to a crossing of the Mississippi Eiver north of 



/^f/^/ 



fSh/ 



ziii 



ZON 



Figure 8. — Structure Contour Map of a Portion of Caddo Oil and Gas Field, Louisiana. 

 Numbered below Sealevel on Blossom Sand 



From Bulletin 619, United States Geological Survey 



Vicksburg, Mississippi, where it intersects with the Angelina-Caldwell 

 monocline. There is strong structural evidence that this fault, or flexures 

 coincident with it, extends across south-central Mississippi through Jack- 

 son and thence into southern Alabama. The strike of the fault above 

 mentioned lies more or less parallel with the Arbuckle- Wichita Moun- 

 tains, and tlie extension westward of this line of disturbance along the 

 Eed Eiver Valley would coincide roughly with the long anticline mapped 



