GEOLOGY OF THE PARADOX LAKE. QUADRANGLE 491 



that these rocks were not in place, but since they showed no sign 

 of glaciation they were regarded as probably representing an erosion 

 remnant. An interesting sheared zone was observed in one of these 

 exposures. A strip about an inch wide had been slickensided and 

 completely recrystallized, the many fossils of the side walls com- 

 pletely disappearing. The sheared zone consisted of pure calcite, 

 polysynthetically twinned. The following fossils were identified 

 from this locality : 



Trinucleus concentricus 



Calymmene senaria 



Ceraurus pleurexanthemus (Green) 



Bathyurus ( ? -) 



Protowarthia cancellata 



Dalmanella testudinaria 



Glossina trentonensis (Lingula attenuata Conrad, L. rectilater- 

 alis Emmons) 



Platystrophia biforata 



Faults. Dislocations of varying magnitude are very widespread. 

 As no stratigraphy can be made out the amount of displacement 

 can not be ascertained, nor is the age always capable of deter- 

 mination. A prominent fault cliff extending some five miles in a 

 n. 15 e. direction from Knob mountain has already been noted by 

 Professor Kemp. The breccia of this fault is displayed in a cut 

 of the abandoned railroad. As fine a scarp extends in the same 

 general direction southwards from Bear mountain. There is a gen- 

 eral parallelism among the various sets of faults in their general 

 directions, but they often curve through a considerable angle. 

 These northeast-southwest scarps are much the freshest and are 

 probably the latest. 



The northwest-bearing fault along the base of Treadway moun- 

 tain is interesting in that its breccia showed infiltrations of iron 

 oxids bearing pyrite and scales of graphite. The graphite was 

 here undoubtedly formed by a secondary deposition, but was prob- 

 ibly derived from the limestone or sandstone. Another set of 

 faults strikes eastwest. . 



