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NEW YORK STATE MUSEUM 



Relations to surrounding beds. The sedimentary beds are no- 

 where exposed in contact with the trap, but at a number of points 

 outcrops occur not far away. A mile and a half southwest of 

 Ladentown (0) ledges of calcareous conglomerate dip toward the 

 trap at angles varying from 5° to 12°, and apparently pass under 

 it. On the eastern side of the trap somewhat similar beds (D) 

 dip westward to an angle of about 5°. This suggests that in a 

 cross-section drawn from C to T> } figure 9, the structure would 



Fig. 8 Contact of the trap and overlying sandstone, south of Little Tor (from a photograph). 



be as represented in figure 10, A. At point E the conglomerate 

 dips 12° southeastward, and then at the limekilns (F) the dip is 

 5° northwestward. The relations along a line E to F and cross- 

 ing the trap may be as represented in figure 10, b. In both cases 

 the relations shown by these sections can not be regarded as 

 more than suggestive. 



Relation to Palisades trap. Previous observers have made this 

 trap a part of the Palisade sill. Between the two there is a deep 

 gap nearly 2 miles wide within which but one outcrop of trap is 

 known (Gr,fig.9). At another point (H) within the gap coarse sand- 

 stone is known to occur. Elsewhere the rock, whatever it is, is 

 deeply buried beneath glacial and swamp deposits. The data in 

 hand indicate that, if the trap is continuous across the gap, the con- 

 necting belt must be much narrower than the Ladentown area, 



