LOWER CRETACEOUS SERIES. 731 



8. Brown sandstone 50 feet. 



9. Pale yellow flaggy limestone 10 feet. 



10. Brown sandstone . 60 feet. 



11. Very light yellow flaggy marble 10 feet. 



IV. MIDDLE QUARTZITIC SAND. 



1. Red, brown, and gray sandstone 560 feet. 



2. Brown and gray quartzitic sand . 60 feet. 



3. Gray quartzitic sandstone, with occasional large siliceous pebbles in thick beds 40 feet. 



4. Brown and gray flaggy sandstone 250 feet. 



V. MIDDLE ALTERNATING HORIZON. 



1. Siliceous limestone conglomerate - 5 feet. 



2. Brown and gray sandstone, with occasional thin bands of calcareous sand- 



stone 410 feet. 



3. Calcareous sandstone 8 feet. 



4. Limestone conglomerate. 2 feet. 



VI. LOWER FLAGGY QUARTZITIC SAND. 



1. Brown and gray sandstone 125 feet. 



2. Light brown calcareous sandstone 15 feet. 



3. Brown and gray flaggy sandstone 100 feet. 



VII. LOWER ALTERNATING HORIZON. 



1 . Alternating siliceous oyster shell limestone and sandstone. The limestone 



ranges from slightly siliceous to decidedly siliceous limestone and is in thin 



bands, while the sandstone predominates 800 feet. 



2. Massive fossiliferous siliceous oyster shell limestone 40 feet. 



3. Thinly-bedded calcareous sand and siliceous shell limestone, with occasional 



thin bands of small oysters as flaggy limestone 250 feet. 



4. Siliceous flaggy shell limestone 100 feet. 



The lower alternating horizons are decidedly siliceous, consisting of thickly- 

 bedded to flaggy siliceous oyster shell limestone near the base, becoming more 

 siliceous as the rocks are ascended, until near the top there occur bands of 

 nearly pure gray and brown quartzitic sandstone alternating with flaggy 

 oyster shell siliceous limestone. 



In many places there are thin bands of a small fragile oyster, but the rock 

 is so metamorphosed that the fossils do not weather in relief. 



QUARTZITIC SANDSTONE HORIZONS. 



The lower, middle, and upper sands of this bed do not differ materially 

 from each other. Flaggy to thickly-bedded brown, gray, and reddish brown, 

 nearly pure quartzitic sand and grit compose them. A small per cent of lime 

 pervades the whole. 



