REPORT OF THE STATE PALEONTOLOGIST 1902 1079 



together in this portion of the map. The pitch of the folds is 

 well shown by the outcrop of the Port Ewen and Oriskany 

 of anticline 1 and syncline 1 and 2. The adjustment of the 

 stream to the Oriskany outcrop, or more specially to the con- 

 tact between the Oriskany and Esopus, is well shown [compare 

 section 24]. Fault 18 cuts off these folds abruptly and, to- 

 gether with fault 19, which is its continuation, bounds this area. 

 West of these faults, we have a strongly eastward pitching, sim- 

 ple syncline, with gentle northern and vertical southern limb. 

 This is a section of syncline no. 1, which, from representing the 

 upthrow side of the fault is alone found, all the more southern 

 folds having been worn away [see section 26]. 



To the north of this syncline is a steeply eastward pitching 

 anticline, which is apparently unrepresented in the other por- 

 tions of the mountain. This fold is broken in the center, and a 

 long narrow block, bounded by faults 20 and 21, has dropped 

 down. Where these two faults converge, is a large, flat bot- 

 tomed meadow, inclosed on all sides except the southwest, by 

 steep banks which rise in places to a hight of a hundred feet or 

 more. The meadow is drained through the open end by a west- 

 ward flowing stream. 



The sides of this depression are so steep and fresh and the 

 bottom so flat, as to suggest some recent movement along the 

 bounding fault planes. The inclosure on the three sides is so 

 abrupt, as to make any other explanation difficult. Moreover, 

 the bottom of the depression is underlain by the New Scotland 

 beds, the same which form the sides of the hollow, and there is 

 no assignable reason why one part should be so maturely eroded 

 while the adjoining portion is still so fresh. It is not improb- 

 able that this impression represents a sink hole of unusual 

 dimensions for this portion of the country. The approximate 

 dimensions of the depression at the bottom are: length 650 feet; 

 greatest width 300 feet [see section 26]. 



Beyond fault 21 to the northern extremity of the mountain, the 

 structure is very simple and uniform, as shown by section 1. 



