Schneider — Overthrust Faults in Central New York. 311 



State Geologist, 1895. Schneider " Science Series, ISTo. 2.," 

 Onon. Acad. Science publication, 1899. 



(b) Maylie's Quarry at Marcelhis, cuts Oorniferous and 

 Seneca layers of the Onondaga. Displacement, three feet. 

 Shown in adjoining quarries for over one-half mile to west- 

 ward. Thrust plane dips 17° to N. See preceding references. 



(c) Gilford's Glen, two miles west of Manlius. Cuts the 

 Onondaga and Marcelhis groups. Decidedly interesting because 

 of the remarkable manner in which the heavy laj^ers of Onon- 

 daga limestone have been arched and bent. Thrust plane not 

 visible. Luther makes the elevation of the limestone sixty feet, 

 but says it is due to bending. 



(d) Fillmore's Corners, one-half mile west of preceding. 

 Cuts Onondaga and Marcelhis groups. Displacement, fifteen 

 feet. "Geological Fault at Jamesville, " Schneider. This 

 Journal, vol. iii, 1897. 



(e) Indian Reservation Quarries. Two faults cut Onon- 

 daga formation. Dip 23° S. Total displacement of the sev- 

 eral faults about six feet. Schneider, "Science Series No. IV," 

 Onon. Acad. Sci. 1905. 



if) Dunlop, No. I, cuts Scalaris limestone in Camillus shale. 

 Displacement, three feet. Dip, 35° S. 



(g) Dunlop, No II, Scalaris limestone. Displacement, three 

 feet. Dip, 32° S. 



(A) Dunlop, No. Ill, cuts Bertie dolomite (?) Displace- 

 ment, two feet. Dip, 23° N. 



(i) Dunlop, No. IV, Bertie dolomite (?) Displacement, four 

 feet. Dip, 28° JST. E. 



(j) Heard's gypsum quarry. A small overthrust in the Camil- 

 lus shale occurs here, apparently more deeply seated than the 

 displacements so common in the gypsum quarries due to the 

 formation and subsequent solution of the gypsum. 



The writer also has MS. notes and drawings of several small 

 faults occurring in the Camillus shale near the peridotite dikes 

 which were temporarily exposed during the trenching of 

 that region for city water. 



At the Solvay quarries at Split Bock in the Manlius and 

 Onondaga formations and in some of the adjoining abandoned 

 quarries several sharp folds and some slickensided surfaces 

 occur which tell of further disturbances. Similar evidences 

 occur in Madison Co. in the vicinity of Chittenango Falls to 

 the east of the described localities, while to the westward they 

 may be seen in the same ledge about Auburn in Cayuga Co. 

 Cleland* mentions a fault in the outlet of Keuka Lake, still far- 



* " A Study of the Fauna of Hamilton formation of the Cayuga Lake sec- 

 tion in central New York," H. F. Cleland, Bulletin No. 206, U. S. Geol. 

 Survey. 



