LABRADOR. 



381 



cnt it need only be remarked that tlic published sections do not furnish 

 the desired proof of the unconformabilitj of the " Intermediate Series '' 

 with the overlying rrimordial. 



LABHADOR. 



Lv 18C3 the gncissoid rocks of Labrador wore assigned by the Cana- 

 dian survey to the Laurentian. In 18G5, Prof. A. S. Packard, Jr. gave 

 some account of the geology of the coast of Labrador. It seems at the 

 beginning he mistook for syenite some diabasic rocks, and thought, from 

 finding some pebbles enclosed, that it was formed from a conglom'erate. 

 He evidently was not aware that eruptive rocks frequently enclose peb- 

 bles that tlicy have picked up. Indeed, it is probable that under the 

 name Syenite Prof. Packard has united very diverse rocks. He assigns 

 some (piartzites doubtfully to the Tluronian, saying : *' Nowhere was I 

 able to see the juncture of this rock with the Laurentian gneiss 



At no point was I enabled to observe whether these quartzites rest nn- 

 conformably upon .the older Laurentian gneiss, tliough inclined to think 



^^ '^'li^ Canadian Geologists likewise state that the strata of 



the Huronian system have not been observed resting direct!^ on tilted 

 Laurentian rocks ; it is as yet a matter of hypothesis." Prof. Packard 

 evidently assumed that the foliation of the gneiss or granite was 

 synonymous with stratification. 



ITe pointed out the presence of the labradorite rocks forming the 

 Upper Lamxntian of Logan and the Norian of Hunt, but he (Packard) 

 does not seem to have observed its relations to the otiier rocks. He 

 however found part of it in overflows which he supposed resulted from 

 a refusion of the labradorite rock. His observations point rather to an 

 eruptive than to a sedimentary origin for this *' norite." (Memoirs 'of 

 the Best. Soc. Nat. Hist, 18G8, L 213-218. 



Prof. Packard's Huronian Dr. Hunt regards as Laurentian, but accepts 



the labradorite rock as Norian. (Amor. Jour. Sci., 1870 (2) XLIX 

 p. 182.) ' ^"^ " 



Prof. 11. Y. Hind later described the Geology of Northeastern Labra- 

 dor; but, as before, the rocks were referred to the Laurentian on litho- 

 logical grounds. No evidence was given to show the relations of the 

 so-called Upper Laurentian to the Lower Laurentian, but all rested ou 



; il 



