40 THE PERMO-CARBONIFEROUS RED BEDS OF 



Section 35. — A section near the northwest comer of the Houston and Texas 

 Central Railroad Company survey No. 27, about 4 miles south and 

 2 miles west of Electra (Udden). p^^^ 



3. In a well bored for water near this place a dark gray thin limestone was pene- 

 trated at the depth of about 45 feet. Fragments of this limestone were seen 

 on the old dump, and it was clearly identical with the Beaver Creek lime- 

 stone. The curb of the well is about 20 feet under a calcareous stratum 

 containing fragments of vertebrate bones, capping a low bluff near this 

 place. The beds between this layer and the limestone in the well consist 

 of red and blue shales, with some sandy layers and streaks of black shale. 

 This shale contains some black impressions of plant leaves. Calcareous 

 sandstone or a concretionary layer caps the adjacent low bluffs i 



2. Red and blue shale, the latter with plant remains, partly exposed, and also 



partly explored in the well 65 



I. Dark gray limestone, containing Syringopora and Estheria minuta Jones. ... I 



67 



Section 36. — BluflF on west side of Horseshoe Lake, Wichita County, Texas 

 (Gordon). p^^, 



II. Limestone, hard, dark blue, brown on exposure, cavernous 4 



10. Blue clay 4 



9. Red concretionary clays 25 



8. Soft red shaly sandstone 15 



7. Red concretionary clay 4 



6. Red shaly sandstone 9 



5. White and red variegated sandstone, more massive than Nos. 6 and 8 6 



4. Nodular clay ("conglomerate") i 



3. Red concretionary clay 15 



2. Nodular clay or "conglomerate" 33 



1 . Red concretionary clay 25 



108.33 



Section 37. — Seymour, Texas (Gordon). p^ j^^^ 



20. Light reddish sandy soil at surface, underlain by dark-red sandy soil . . 20 to 25 



19. Blue shale, with thin ledges of magnesian limestone 6 



18. Limestone in massive beds, passing horizontally into shaly beds 5 



1 7. Dark clay shale i 6 



16. Concretionary calcareous shale and limestones o 6 



15. Limestone in two massive ledges separated by I to 4 inches of blue clay shale. 3 



14. Blue shale 10 



13. Argillaceous limestone and dark blue shale 3 



12. Limestone with varying proportions of shale 4 



1 1 . Blue clay 3 



10. Red clay 5 



9. Blue clay 2 



8. Limestone 2 



7. Blue clay shale 5 



6. Limestone o 6 



5. Blue clay shale 4 



4. Limestone i 6 



3. Blue shale, with lenses of limestone 3 



2. Blue clay shale, interbedded with thin limestone 2 



I . Li mestone 16 



102 



Section j8. — At the southeast corner of the Walker- Harvey survey, 2.5 

 miles northeast of the Union Station at Wichita Falls, a sandstone 1 2 

 feet thick is seen in the low bluff. This sandstone rests on some 20 

 feet of red and gray shale (Udden). 



Section 39. — In the cut of the Missouri, Kansas and Texas Railroad, on 

 a hill about i mile east of Wichita Falls, a sandstone is exposed which 

 is composed of alternations of flat laminated layers and cross-bedded 

 layers from 2 inches to a foot thick. Some of the uppermost layers 

 are black from impregnations of iron and manganese oxide (Udden). 



