THE DEVONIAN LIMESTONE AT 

 ST. GEORGE, QUEBEC 



THOMAS H. CLARK 

 Harvard University, Cambridge, Massachusetts 



An area of fossiliferous rocks which has received scant attention 

 in the past is that of the Devonian Hmestone at St. George, Quebec, 

 on the Chaudiere River. In 1863, Logan^ devoted a page or two 

 to the hmestone and its fauna, and again in 1888 EUs^ referred to 

 them very briefly. In the scramble to attack problems in more 

 alluring areas geologists and paleontologists alike have passed these 

 outcrops by. Few geologists enter the territory between the St. 

 Lawrence River and the Maine boundary, unless it be for the pur- 

 pose of examining the asbestos deposits at Thetford, or of exploring 

 among the crystallines which outcrop along the International 

 border. Paleontologists find Httle to attract them south of the 

 fossihferous Levis shales along the St. Lawrence itself, and a glance 

 at EUs's map of the country to the south shows the symbols denoting 

 fossiliferous localities to be few and very far between. Recently 

 B. R. MacKay^ has published an account of these rocks in a memoir 

 primarily concerned with the genesis and distribution of the placer 

 gold of the region, but the stratigraphy and structure have been 

 worked out as carefully as that difiScult terrane permits. The 

 Devonian outcrops in question have been restudied and the fauna 

 reported on by Kindle. The writer's collection of fossils from this 

 limestone was made during the last two years, and seems to shed 

 some Kght upon the larger problems connected with the Middle 

 Devonian. 



' Sir William Logan, Geology of Canada (1863), p. 428. 



^R. W. Ells, "Second Report on the Geology of a Portion of the Province of 

 Quebec," Geol. Surv. Can., Ann. Kept. (1887), Part K, pp. 9-11K (1888). 



3 B. R. MacKay, "The Beauceville Map-Area, Quebec," Can. Geol. Surv., Memoir 

 127 (1921), pp. 31-33. 



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