STATUS OF THF: INVESTIGATIONS. 295 



The iiiults of the third class may ])e characterized as minor breaks 

 produced abundantly in narrow zones, either between two branches of a 

 fault of the first class or else between two faults of that class which ap- 

 proach rather closely and seem related to each other. They are confined 

 to the block between the two faults, being in that respect like the faults 

 of the second class. They may perhaps be better regarded as a mere 

 phase of the faults of that class, produced in unusual number under local 

 circumstances. 



Other probable Faults. 



The facts here set forth have been incidentally noted by the writer 

 while engaged as assistant to Professor J. F. Kemp in mapping the areal 

 geology of the region. The results are therefore incomplete, portions of 

 the area requiring more detailed work than it has yet been found possi- 

 ble to bestow on them. There are indications of the presence of other 

 faults than those here noted, this being more especially true of the south- 

 ern part of the township, where the apparent great extent of the Calcif- 

 erous and the lack of other formations implies a considerable amount 

 of faulting. Some of the faults already mapped require further study 

 for their proi)er elucidation. They are sufficiently well worked out, 

 however, to answer the purpose for which the paper was written. 



Non-appearance of the Calciferous at Chazy Village. 



The theory has been advanced that the Calciferous is lacking at Chazy 

 village because of non-deposition.-^ As a result of their work in the 

 vicinity, Brainard and Seeley maintained that the Calciferous might be 

 thrown out by a fault along Tracy brook, that such a fault existed, and 

 that the great disturbance of the rocks at Chazy village was the result 

 of said faulting. t With the latter explanation the writer full}^ agrees 

 and would urge in its favor that the present relations existing there be- 

 tween the Potsdam and Chazy are clearly the result of disturl)ance and 

 give no clue whatever to their possible relations prior to the disturbance; 

 that a great fault (A- A) separates the two, and is in itself sufficient to 

 account for the absence of the Calciferous; that at the only locality in 

 the township where the structure ])ermits of the outcroi)ping of the beds 

 which lie beneath the Chazy the Calciferous appears; that both to the 

 north and south within from two to four miles the Calciferous is present 

 in such force that the warping necessary to produce the supi)osed ces- 

 sation of deposition must have been local in the extreme, and finally 



• C. D. Wftlcott : Bull. 30, U. S. Geol. Survey, p. 22. 

 t Am. Geologist, November, 168S, p. 327. 



