Weno and Pawpaw Formations 31 



may be seen in cuts on East Main Street, where it is a cross-bedded rather 

 consolidated, brick red sandstone. No fossils were seen at this locality. 

 The formation is stated by Stephenson 1 to be 50 or more feet thick near 

 Denison. The Pawpaw is poorly exposed north of a west branch of Little 

 Mineral Creek just south of Fink, where it is steeply tilted. On the Red 

 River about 2 miles northwest of Cedar Mills, Grayson County, there is a 

 long cliff dipping west (5) which exposes near the top about 40 feet of 

 loose sand only partially consolidated, which is probably Pawpaw. 



SECTION OF BLUFF OF RED RIVER TWO MILES NORTHWEST OF CEDAR 



MILLS, GRAYSON COUNTY, TEXAS 



MAINSTREET: Feet 



White limestone with Ostrea quadriplicata, Turrilites brazoensis, Kingena, 

 Exogyra arietina, Pecten subalpinus, Enallaster sp. aff. texanus. Seen 

 in ravine above east end of river bluff near road 10 



PAWPAW: 



Sandstone with thin ferruginous layers 40 



Blue marl with clay and sand seams and nacreous fossils: Engonoceras, 



Corbula, Nucula, Ostrea quadriplicata, Pecten subalpinus 30 



QUARRY LIMESTONE (?): 



Massive grayish semi-crystalline limestone 2 



WENO: 



Blue marl with nacreous fossils 40 



The roadside cuts 2i/ 2 miles east of Gainesville, Cooke County, inconsec- 

 utive sections of the Pawpaw are seen. The interval from the top of the 

 Quarry group to the base of the Mainstreet limestone is not less than 45 

 feet. The base of the Pawpaw overlying the Quarry limestone is seen in a 

 cut of the Missouri, Kansas and Texas railway (Wichita Falls branch) at 

 the north end of the brickyards pit 1% miles southeast of Gainesville. 

 This exposes about 8 inches of an irregularly deposited reddish ferrugin- 

 ous shell conglomerate largely of Ostrea quadriplicata cemented into the 

 pitted surface of the Quarry limestone. The same level is exposed near 

 the water tank on the southwest rim of the pit. In roadside cuts % mile 

 southeast of this locality about 45 feet of Pawpaw may be seen poorly ex- 

 posed ; it consists of thin layers of ferruginous dark red brown sandstone 

 which, locally at least, consists of cemented masses of ironstone fossil casts : 

 Area, Protocardia, Nucula, Corbula, Turritella and rare Ostrea quadripli- 

 cata and Gryphea. These ironstone layers are interbedded with brown to 



iStephenson, U. S. G. S., Prof. Paper 120-H, p. 142. 



