188
SECTION No. 13.-HINER, PARKER COUNTY, TEXAS (TAFF).
| Comanche Peak formation: | Feet. |
| 16. Comanche Peak chalky limestone | 40 |
| 15. Chalky limestone with large Exogyra texana, Enallaster texanus, Lima, and Cyprimeria texana | 30 |
| 14. Hard chalky limestone | 40 |
| Walnut formation: | |
| 13. Gryphæa shell limestone | 10 |
| 12. Chalky limestone | 1.66 |
| 11. Hard limestone, with many small Gryphæa | 1.5 |
| 10. Chalky limestone, with few Gryphæa | 15 |
| 9. Marly limestone, containing Exogyra texana, , and Ammonites, all in great abundance | 30 |
| Paluxy formation: | |
| 8. Paluxy sand bed | 110 |
| 7. Yellow crystalline limestone made up of shell fragments | 5 |
| 6. Calcareous yellow sand, stratified | 20 |
| Glen Rose formation: | |
| 5. Marly and shaly limestone capped by a ledge of hard crystalline limestone | 20 |
| 4. Marly and shaly lime, containing Cardium, Area, Cyrena, Trigonia, Anomia, and Ammonites | 10-15 |
| 3. Alternating hard and crumbling limestone | 50 |
| 2. Cardium bed | 30 |
| Basement sands: | |
| 1. Trinity sand | 100 |
Outcrops of the Trinity and Fredericksburg divisions are beautifully shown in the wide slopes of the Brazos Valley from the eastern edge of the Grand Prairie at Weatherford westward to Millsap. It is difficult to obtain the exact thickness of the formation in vertical series, owing to the fact that within this short distance along a profile of 14 miles the increment of the Glen Rose beds is very great. The following section, made by the writer in 1890, gives an idea of the sequence and thickness of the formations , at their outcrop. This will be followed by a vertical section at Weatherford from an artesian well which penetrated the entire series here described and which gives a check on their thickness at that locality. The section extends from Millsap eastward to Weatherford along the lower Millsap road.