GEOLOGY OP THE VICINITY OP LITTLE PALI.!- 



41 



Lowville and Trenton appear, close to the more somtii-i^riy branch 

 of the fault, with a nearly or quite vertical dip. I?igure 5 ft, 

 shows the conditions at this point. A few yards farther west 

 there is exposed a rubble zone composed of broken xt]) fragments 

 of Beekmantown, Lowville and Trenton limestone, with an ex- 

 posed width of 20 feet, which marks the fault plane ot the south 

 branch of the fault, the flat Beekmantown showinji uliri^ctly to the 

 south, but no rock shows just to the north of the nibble zone. 



The throw of the fault here can only be couje<:tured. The 

 entire Trenton and passage beds are thrown out. logether with 



B 



ieekmantaurn i^owvlUe Trenton ut" i cj 



Fig. 5 Sections across the Little Falls fault. Scale, 75 y(i=l in. 



unknown amounts of the Beekmantown and Uticit. The exposed 

 Beekmantown at the south is however very near the summit of 

 the formation, so that no large amount of it is inv<»']ved On the 

 dropped side the exposed Utica would also seem to iie near the 

 base of the formation, since the upper j)assage bed« are exposed 

 not far away. The throw would therefore seem uoi to exceed 

 300 feet here. This greatly diminished throw in a distance com- 

 paratively so short, coupled with the fact that still farther north 

 the throw is approximately the same as at Little Falls, leads 

 the writer to conjecture that quite likely the fault branches at 

 the turn, and that this branch has remained undetected, owing 

 to scarcit}^ of outcrops. That the fault should suddieuly diminish 

 so greatly in magnitude, and then shortly -reach again its former 

 importance, might perhaps be brought about by its change in 

 direction, but this Avould seem to be verv unlikelv. 



