DESCRIPTION OF THE AREAS 



281 



GODS-ISLAND LAKES AREA s 



Several isolated areas of rocks similar to those described are found in 

 the region of Grocis and Island lakes and on Gods Eiver. This region is 

 drained by Gods Eiver to Shaniattawa Eiver and thence into the Hayes. 

 It is the least accessible part of 



Fra^mental 

 rock 



Lava 



Manitoba and the only geological 

 information available is from hur- 

 ried reconnaissance surveys. A. G. 

 Cochrane mentions the occurrence 

 on Gods Lake of mica, hornblende 

 and diorite schists, massive diorite, 

 and "compact, dark, greenish-gray 

 diorite with small quartzite peb- 

 bles.'^ This is probably a gray- 

 wacke derived from the dioritic 

 rocks, which has been 'reconstituted 

 into a rock like the original. Sedi- 

 ments of this kind are found in the 

 Lake Athapapuskow region. No 

 statement is made regarding the 

 relation of these rocks to the gran- 

 ites and gneisses called Laurentian. 



Island Lake is situated south of 

 Gods Lake, near the boundary be- 

 tween Manitoba and Ontario. It is 

 approximately 50 miles long and 

 is said to be full of islands. Coch- 

 rane notes "dark gray felsitic schist, 

 glossy calcareous schist, siliceous 

 slate, and felsitic slate of an olive 

 gray color." Steatitic schist, horn- 

 blende slates, and schistose con- 

 glomerate are also reported, but without any detailed description or 

 statement of the relations of the various types. Serpentine is also re- 

 ported. 



On Gods Eiver is a small area of schistose conglomerate situated about 

 half way between Gods Lake and Shamattawa rivers. It is said to overlie 

 the syenite gneiss and is cut by basic intrusives. 



Figure 3. — Diagrammatic Plan of Contact 

 of fragmental Rock and Lara Floio in 

 Section 



Fragments average 6 inches 



length 



5 A. G. Cochrane: Geol. Surv. Can., Rept. Prog., 1879, p. 29e. 



