52 Ailing — Problems of Adirondack Precambrian. 



graphite schist. The ' ' Dixon' ' have been traced (not con- 

 tinuously to be sure) from the middle of the Ausable 

 sheet south to Saratoga Springs, a distance of 90 miles, 

 and from Hague, on Lake George, west to Conklingville, 

 a distance of 40 miles. It usually exists as a single stra- 



i 



Stratigraphy of the Grenville rocks 

 associated with the graphite schists 

 in the southeastern Adirondacks. 

 Eock jSarae Estimated 



Thickness 



II 



Stratigraphy of the Grenville rocks 



associated with the graphite schists 



on the George W. Smith property. 



Rock Name Estimated 



Thickness 



Param- 

 phibolite 



Beech 



Mountain 



150 ft. 









Feldspar- 

 quartz 

 graphite 

 schist 



Bear Pond 



30 



Feldspar- 

 quartz- 

 graphite 

 schist 



Bear Pond 



30 



Sillimanite 

 schist 



Catamount 



80 



Sillimanite 

 schist 



Catamount 



80 



Limestone 

 Quartzite 





20 

 400 









Swede Pond 



f Quartzite 

 1 



J Limestone 

 I Quartzite 

 I 



L"pper Swede 



Pond 

 Trout Pond 

 Lower Swede 



Pond 



350 



50 

 50 



Limestone 



Quartz- 

 graphite 

 schist 



Faxon 



" Dixon " a 



20 

 30 









Quartz- 

 graphite 

 schist 



Dixon 



10 



Garnet 

 silliman- 

 ite gneiss 



Hague 



60 



Limestone 



Absent (?) 

 Chesterfield 



50 



Param- 



phibolite 

 Limestone 

 Quartzite 



Dresden 



Johnsburg 



Sacandaga 



120 

 30 



70 



Param- 

 phibolite Dresden 



100 











Total 



1000 



640 



a This name is preoccupied, see Dixon Formation of Tennessee, Pete, Wm. 

 F. & Bassler, R. S.: U. S. Nat. Mus. Proc, 34, 407-432. 



turn, but at the American Graphite Company's mine at 

 Graphite it occurs as two distinct layers separated by 

 bands of the garnet- sillimanite gneiss (the Hague 

 gneiss), but it appears as a single formation four miles to 

 the east at Hague. In the Flake Graphite Company's 

 mine a parting composed of thin beds of limestone and 



