496 GEOLOGY OF NORTHWESTERN TEXAS. 



I traced the seam of coal by its outcrops from hill to hill up Whisky- 

 Creek for one mile, to the new road crossing. The bottom bed of coal passes 

 out of sight beneath the overlying strata near the old road crossing, and the 

 bed of sandstone above that bed becomes the bed of the creek for some dis- 

 tance and finally passes out of sight at the new crossing. The dip of the 

 strata here is forty feet to the mile, north 60° west. 



At the new road crossing on Whisky Creek the following section was 

 made. Beginning at the bottom: 



1 . Sandstone 8 inches. 



2. Blue clay 6 feet 



3. Coal 1 foot 6 inches. 



4. Yellow shaly sandstone 4 feet. 



5. Sandstone, thin-bedded 2 feet. 



6. Yellow clay, with clay ironstone 8 feet. 



Total . . 22 feet 2 inches. 



The following fossils were found in the strata at the mouth of Whisky Creek: 

 Productus punctatus, P. nebrascensis, Spirifer cameratus, Myalina subquadrata, 

 Nuculana sp., Fenestella, Aviculopecten occidentalism Nuculana bellistriata, Syno- 

 cladia, Zaphrentis, and a Bryozoan. 



One-half mile below the mouth of Whisky Creek, and on the same side of 

 the Brazos River, I made the following section. Beginning at the bottom: 



1. Blue clay, with selenite 6 feet. 



2. Coal 1 foot 8 inches. 



3. Limestone 2 feet. 



4. Shaly sandstone and clay 6 feet. 



5. Sandstone, ripple-marked 2 feet. 



Total 17 feet 8 inches. 



In all the wells at Belknap they reach the coal seam at a depth of about 

 forty feet. Just south of the town the coal outcrops in the side of the hill 

 or river bluff. It is at this place just below a massive limestone, but is evi- 

 dently the lower bed seen at the mouth of Whisky Creek. The other beds 

 have been destroyed at that place by erosion. 



On the south side of the Brazos River, near the Eliasville road and about 

 two miles from* Belknap, the coal outcrops near the top of the hill. At this 

 place both the upper and lower beds are seen. These seams are very easily 

 traced up the river on the south side for a mile or more. 



From the mouth of Whisky Creek westward I traced the coal seam up the 

 river for about three miles. At about that distance from the mouth of Whisky 

 Creek the upper bed passes under the bed of the river. At that place I made 

 the following section. Beginning at the bottom: 



