764 



A. C. VEATCH 



very much stained with iron, and covered with a coating of 

 pebble-conglomerate, which renders their composition unrecog- 

 nizable, are not greatly decayed ; the smaller ones show very 

 great weathering. When not masked by recent deposits, the 

 lithological character of this bed is quite distinctive. 



3. Red clays a?id associated beds {^Sankaty^ . — The red clay bed 

 which overlies this gravel is perhaps the most easily recognized 

 and persistent bed on the island. After its stratigraphic position 

 has been definitely fixed in a number of exposures, it becomes a 

 key bed to the whole series. It is a very finely laminated red clay, 

 with occasional sand partings, especially in its upper portion. 



Fig. 3. — -Section at Tobacco Point, east side of Gardiners Island, N. Y. (i) Cre- 

 taceous ; (2) old glacial gravel ; (3) red clay ; (4) fossil bed with bowlders. 



where it grades into a fine gray to yellowish-gray silty sand. 

 The red clay has a thickness of about 15 feet. Overlying the 

 red clays are very finely laminated gray and yellowish-gray silty 

 sands, which, although somewhat eroded on the north shore, are 

 still 15 feet thick. On the east shore, at Tobacco Point, they 

 apparently grade upward into a peculiar mixture of sandy clay 

 and fossiliferous sands with lens-shaped masses of glacial peb- 

 bles in their upper portions. These lenses of glacial gravel are 

 perhaps to be accounted for by floating ice from the approaching 

 glacier which disturbed these beds. The fossiliferous beds are 

 clearly stratigraphically above the red clay, and are involved in 

 the same fold (Fig. 3). 



A small collection of fossils from the outcrop on Tobacco Lot 

 Bay, and from another near the western point of the island, have 

 been identified by Dr. William H. Dall as follows : 



West point of Gardiners Island : 

 Cyprina islandica, Gmelin. 

 Crenella area. 

 Modiola sp. 



