POSTGLACIAL FAULTING ABOUT MOUNT TOBY 



7! 



fault ou which the westerly block has dropped some 20 feet, and, tilting back 

 against the fault face, makes a depression, now occupied by a frog pond. Back 

 of the Tyler camp is an escarpment 60 feet high, with an entirely fresh and 

 unweathered face, and one triangular block some 20 feet wide is caught and 



Figure 3. — Brook fdlUng over Fault Esrariitiieut, edge of ichich is not i/et eroded 



left hanging half way down the fault face. I could enumerate twenty more 

 such escarpments on Mount Toby of five to 50 feet high, with fresh and un- 

 weathered faces, and with glacier-smoothed top surfaces still extant. In gen- 

 eral, one set of faults trends north, varying some ten degrees either way, and 



