^^^^^^ Gneissic Igneous Complex 



HHIHJH Gabbro 



kWimm Gianite, coarse equigranular 



l / T-^ij' i ^ Granite, fine grained porphyritic 



I^O^H^I Giar.c-syenite, equigranular 



l-^^vf^J Granc-syenite, porphyritic 



[^_^-j^^£_.l Hornblende syenite, includes both the 

 ~~— -~ — -~^ porphyritic and equigranular facies 



Augite syenite, includes both the por- 

 phyritic and equigranular facies 



I^T^*7^"TTf Basic augite syenite, includes both the 

 ■'i .'->.' />^ ^i.< | porphyritic and equigranular facies 



3 



Grenville gneisses and limestone with 

 intrusive granites 



Sadimentary beds overlying the Pre- 

 cambric rocks unconformably 



■"^ «■ Boundary between different facies of 

 Syenite-Granite complex 



Q Q Boundary between equigranular 



gneisses (Croghan Mass) which 

 exhibit no evidencesof crushirgand 

 protor-'astic gneiss (Diara Mass) 

 on NW., which is porphyritic 



V J{ Boundary between protoclastic and 



*^ c a* aclastic- protoclastic gneiss on 



NW., both of which are porphyritic 



Sketch Map of Geology of Lowville and Lake Bonaparte Quadrangles, N. Y. 



