Petrographical Relations of Laurentian Limestones. 25 



(-* 



I— 1 



h- ' 



i— > 



i— i 



1— 1 



I— 1 



1— ' 



1— * 





to 



to 



to 



to 



to 



to 



to 



to 



to 





-a 



OS 



-<r 



OS 



^r 



-a 



-j 



OS 



^JT 



Rock 



o 



^T 



to 



CO 



rf*. 



en 



i— ' 



CO 



CO 





-t-+ 



* 



+ H- 



-t--t- 



* 



X 



X 



X 



+ 





> 



td 



t> 



i> 



td 



W 



td 



w 



td 





A 



A 



A 



V 



A 



9p 





A 







A 



A 



A 



V 



W 





M 







W 



W 



W 



w 





CO 









Basic 



Constituent. 



C5 



OS 



Cn 



CO 



co 



to 



to 



I— 1 







CO 



OS 



^r 



rf^ 



to 



CO 



to 



o 



OS 





o 



en 



c© 



o 



£>- 



o 



CO 



O 



CO 





co to 



I— 1 ^ 



Calcite. 



to 



OS 0-2 



hP- cn 



Scapolite. 





1— ' 





to 



« 



to 



CO 



cn 



-a 



Labradorite. 



If*" 



o 



Jj*> 



o 





to 



1— I 



CO 





OT 



rf^ 



■ OS 



Andesine. 



o 



cn 



to 





cn 



o 



CO CO 



to cn 



CO 

 CO 



Oligoclase, 









to 



to 



to 



Cn 



to 





^ 1 



to 



to 



o 



to 



to 



h- l 



to 



Quartz. 



^r 



CO 



o 



-<r 



o 



^T 



O 



o 













h- 1 





to 









to 



OS 



to 



CO 



1 



CO 



Microcline. 







CO 



rf^ 



-a 



CO 





rf^ 







tO -T 



CO OS 





Orthoclase. 



