744 EDWARD STEIDTMANN 



Buddington^ studies the petrography and origin of the pre- 

 Cambrian rocks of Newfoundland. 



Cooke^ says that the underlying rocks of the region at the head 

 waters of the Broadback River in northwestern Quebec include a 

 complex of basic schists, which is overlain unconformably by 

 sediments including mica quartz schists, quartzites, arkose, and 

 conglomerate. The youngest rocks are intrusive granites. 



Cooke^ states that the pre-Cambrian rocks of the northwestern 

 part of Quebec are probably all pre-Huronian, using the latter 

 term in the sense of the International Committee. The succession 

 is as follows: 

 Mattagami series — In scattered patches 



Unconformity 

 Nemenjish series — Seems to correspond to Grenville series farther south 

 Abitibi series — Basic lavas probably the equivalent of the Keewatin 



Dresser^ reports on an area along the south shore of Lake 

 St. John about 120 miles north of the city of Quebec. Here are 

 notable outliers of Paleozoic rocks preserved by faulting. The 

 pre-Cambrian rocks of the area include granites and anorthosite, 

 the latter containing important titaniferous magnetic ores. 



Faribault^ reports that the pre-Cambrian rocks of the Pleasant 

 River Barrens, Lunenberg County, Nova Scotia, comprise the 

 Goldenville quartzite which is overlain by the Halifax slates. 



According to Faribault^ the pre-Cambrian rocks underlying 

 the Port Mouton map area comprise the Goldenville quartzite 



'A. F. Buddington, "Pre-Cambrian Rocks of Southeast Newfoundland," Jaur. 

 GeoL, Vol. XXVII (iqiq), PP- 449-79- 



^H. C. Cooke, "An Exploration of the Headwaters of the Broadback or Little 

 Nottaway River, Northwestern Quebec," Canada GeoL Surv. Summ. Rept. 1912 

 (1914), pp. 337-41, map. 



3 H. C. Cooke, "Some Stratigraphic and Structural Features of the Pre-Cambrian 

 of Northern Quebec," Jour. GeoL, Vol. XXVII (1919), PP- 65-78, 180-203, 263-75. 



4 John A. Dresser, "Part of the District of Lake St. John, Quebec, " Canada GeoL 

 Surv. Mem. No. 92 (1916), 88 pp., 5 pis., 2 figs., map. 



sE. R. Faribault, "Geology of the Gold District of Pleasant River Barrens, 

 Lunenberg County, Nova Scotia," Canada GeoL Surv. Summ. Rept. 191 3 (1914), 

 pp. 259-63, map. 



^E. R. Faribault, "Geology of the Port Mouton Map Area, Queens County, 

 Nova Scotia," Canada GeoL Surv. Summ. Rept. 1913 (1914), PP- 251-58. • r 



