8o 



NEW YORK STATE MUSEUM 



ville road they are n. 30° e. and about 45° s.e., and one mile south of 

 Hopewell Junction n. 44° e. and 45° s.e. 



The western slope of Bonney hill has the appearance of a fault 

 scarp and shows numerous outcrops of limestones dipping to the 

 east. Along the road leading south from Bonney hill, at the north 

 to the east of the road and at the south to the west of it is another 

 scarp with easterly dips. South of Bonney hill a northeast-south- 

 west break apparently intersects this fault and the limestones north 

 of Johnsville lie in the angle between them. 



The section (fig. 24) along the railroad cut east of Hopewell 

 Junction shows some structural detail. Heavy erosion has obscured 

 the larger features and has brought out the minor ones. Beginning 

 at the west, the section is first through beds dipping gently eastward, 



Fig. 24 Generalized section of the south wall of the railroad cut east of Hopewell Junction 



and apparently bordered en the west by the northward continuation 

 of the fault that follows the road southeast of Bonney hill. East 

 of this it is through a symmetrical northward pitching anticlinal 

 shown in plate 13, and complemental synclinal, then in a smaller 

 anticline and syncline, and then through an irregular fold with its 

 eastern limb pushed up. This is followed by a closely compressed 

 syncline which is succeeded by a closely-folded overturned anticline 

 (see plates 14 and 15) ; then two small folds which are cut off at the 

 east by the fault shown on the map. 



East from here along the railroad the sections are fragmentary. 

 In the second cut east of the overhead bridge on the road from Gay- 

 head to Gregory's mill, the limestones show an arrangement like 

 that of figure 25. Just west of Stormville station the beds are 

 isoclinal, dipping to the east, and show a considerable aggregate 

 thickness. 



w. 



Fig. 25 Section just east of the overhead bridge on the railroad between Hopewell Junction and 

 Stormville. Q, nest of quartz 



The tendency to arrangement in somewhat gentle folds is shown 

 by numerous observations. In some places the dip is east and at 



