Bulletin 15 



366 



reddish sands and gravels. 



Dip of Coralline bed. About an eighth of a mile south of the 

 northern end of Aspalaga Bluff, a small ravine enters the river 

 valley. This ravine is the second passed in traversing the dist- 

 ance indicated. Up the ravine, the coralline {Madrepora) bed is 

 but 1 5 feet above the level of the base assumed in the last sedlion , 

 instead of 25 feet as at Aspalaga Bluff, showing a southward dip 

 of ID feet to an eighth of a mile. Farther up the ravine, along 

 the right hand fork, at a height of 135 feet above the same datum 

 plane, the greenish- white, clayey limestone was found, containing 

 Placu7ia, PeSlen and two species of Ostrea, a large and a plicate 

 form. The fossils range through 124 to 138 feet approximately. 

 The same bed occurs at Aspalaga Bluff at a height of about 145 

 feet. 



Se5lion at Camp Scott. A mile or more above Ocheesee 

 L^anding, but on the eastern shore, a sedlion was leveled by 



Mr. Pacheco. The total 



ment. 



height of the bluff at 

 this point was found to 

 be 95 feet. Of this dist- 

 ance, the lower 75 feet and 

 the upper 10 feet were un- 

 exposed. A fossiliferous, 

 sandy layer with Pe£len and 

 Placitna was noted, extend- 

 ing from 75 to 78 feet, and 

 an Ostrea bed from 81 to 83 

 feet, being separated from 

 the Petle7i bed by the hard 

 limestone which forms the 

 cap rock of the embank - 

 Above the Ostrea bed are red sands. 



Unexposed 



v^fSviS: Red sands 

 ^^^^ Ostrea layer 



I ' I ' 1 ' —H ard cap rock of 

 n ' , ' , ^-r - embankment 

 |;:.; ■ PeBe7t and Placuna 



Unexposed 



Section at Camp Scott. 



SeSliofi at Rock Bluff {see page 57). A sedlion was taken by 

 Prof. Harris at Rock Bluff, a short distance south of Camp Scott. 

 The total height of the bluff was found to be 90 feet above water 

 level. The sedlion shows the contadl of a concretionary layer of 



