in the Cayuga Lake Region. 247 



degrees at variance with those for the larger area. As 

 proof of the applicability of his theory, he cites the pres- 

 ence of buckling as shown by a raised area in the northeast 

 part, of the Catatonk quadrangle, and of a depression in 

 the central portion, near Jenksville. These are unques- 

 tionably present and quite possibly bear some relation to 

 the joints of the region, but they are not the only domes 

 and depressions which occur in the two quadrangles. 10 

 Following the axis of the AVatkins anticline as he sug- 

 gests, the Portage- Chemung contact, starting at about 

 1520' near the western boundary of the map, dips toward 

 Seneca Lake valley, and at Texas Hollow, to the east, has 

 risen to an elevation of 1480' whence the beds continue 

 horizontal to a point two miles southwest of Enfield, the 

 last exposure west of Cayuga valley, along this line. To 

 the north near Eeynoldsville, on the crest of the Firtree 

 anticline this contact is 1600' as it is on the crest of the 

 Alpine anticline to the south and near Cayuga L. The 

 first contact shown east of Cayuga valley following the 

 axis of the AVatkins anticline as stated, is at Pleasant Hill, 

 six miles east of Ithaca and 14 miles east of Enfield where 

 the contact is 1720' or 240' above the contact at Enfield. 

 "Were the secondary synclinal fold in which Cayuta Lake 

 lies disregarded, there would be in this 14 miles a rise of 

 but 17' to the mile, whereas the rise to the north from the 

 depression at Jenksville mentioned by him is over 43' per 

 mile for 16 miles. The average of a number of southerly 

 dips north of the big bend of Cayuga Lake is about 45' per 

 mile, steeper dips developing as the datum plane of the 

 Tully limestone is followed north. Owing to the lack of 

 geological and especially structural knowledge of the area 

 to the north of the Watkins and Catatonk quadrangles, it 

 seems hardly possible to form a very reliable opinion of a 

 district so near to the unknown. "Work to the north along 

 Cayuga Lake this past autumn, together with observations 

 of the mapped quadrangles, would seem to indicate that 

 the greater southerly dips, even discounting what is due 

 to the folding process, are entitled to equal, if not greater, 



10 In a personal communication Mr. Bueher claims two sets of movements, 

 that producing the joints and buckling being prior to the one 'which devel- 

 oped the major folds and their accompanying faults. The horizontal frac- 

 ture planes he thinks may have originated during the first activities, only 

 the movement taking place later. 



