524 Raymond — Succession of Faunas at Levis, P. Q. 



collections were made which were reported on by Dr. H. M. 

 Ami in Dr. Ells' "Report on the Geology of a Portion of the 

 Province of Quebec."* A small number of geographically 

 located collections were listed, but nothing definite was said 

 of the stratigraphic succession. 



In commenting on the work of Drs. Ells and Ami, Dr. 

 Euedemann remarks : " It is, therefore, evident that the com- 

 plicated stratigraphic conditions under which the Levis beds 

 are found in the Quebec region do not invite or permit an 

 establishment of the succession of their faunal zones."f 



Dr. Ruedemann's perfectly justifiable deduction from the 

 previous work in the vicinity of Levis is happily not in accord 

 with the actual stratigraphic conditions. The structure is cer- 

 tainly complicated enough, but there exists at least one good 

 section sufficiently complete to permit the establishment of the 

 relations of the principal faunas, and if time enough were 

 spent in collecting it is probable that all of Hall's species could 

 be definitely placed as to horizon. In spite of the close fold- 

 ing and the considerable faulting at Levis, the strata are in 

 general not crushed or metamorphosed, and the fossils are well 

 preserved. 



The best section is in the bluff which faces up the river 

 about one-half mile below the station at Levis, at the point 

 where the street car line climbs to the upper level. It is 

 known locally as Begin's Hill. On this bluff about three 

 hundred feet of strata are exposed, all dipping steeply to the 

 southeast. The following is the section, beginning at a layer 

 of conglomerate exposed in the river at low tide : 



Section at Begin's Hill. 



1. Massive conglomerate with large pebbles of 

 limestone and sandstone. The matrix is largely 

 limestone, but with abundant rounded sand 

 grains. The whole mass weathers to a rusty 



yellow color 12ft.= 12 ft. 



2. Shale, mostly concealed by the river and rail- 

 road tracks" ..About 100ft.= 112 ft. 



3. Hard, dark gray to black shale, some bands of 



which weather to a rusty yellow 60 ft. = 172 ft. 



4. Thin-bedded rather blacker shales with unde- 



terminable fragments of graptolites all through. 

 Good specimens of Didymograptus nitidus 

 and others have been found seven feet below 

 thetop ----- -- 49ft.= 221ft. 



5. Thin-bedded limestone with shale partings. 



Didijmocjraptus similis and minute trilobites 

 andostracods --- 11 ft. = 232 ft. 



*Ann. Kept. Geol. and Nat. Hist. Survey Canada, pt. K, for 1887, 1888, 

 pp. 50 K et seq. fLoc. cit., p. 559. 



