10 B 



GEOLOGICAL SURVEY OF CANADA. 



Fossils. 



Beds East of 

 Alliford Bay 



conglomerates. Many layers here become calcareous from the inclusion 

 of organic remains, of which some are evidently shells, though too 

 poorly preserved for recognition, except in the case of one or two 

 specimens, which appear to be Ostrece. 



Subdivision E. E. Lower Sandstones. — Subdivision E. underlies the last. Near 

 the centre of the south side of Maude Island a small area, which 

 is supposed to represent the rocks of the Triassic, is found. 

 "Westward it appears to be limited by a fault, but eastward 

 it is overlain by a small thickness of beds partly of a tufaceous 

 character, but containing also ordinary sandstones, which in some 

 places include calcareous layers with many fossils. These, while 

 in some cases specifically identical with those of Subdivision C, include 

 a few species not yet found in that part of the section, and thus present 

 a general facies somewhat different from it. On the east side of South 

 Bay, similar rocks are again found intervening between those of sup- 

 posed Triassic age and subdivision D. 



East of Alliford Bay a break in the section occurs, in which the. 

 junction of D. and E. is concealed, but beyond it, and apparently dip- 

 ping conformably below D, are greenish, ashy sandstones, interbedded 

 with shales, and pretty closely resembling the rocks of the two last- 

 mentioned places. Following the shore eastward, the section is not 

 continuous, but the beds above described might be supposed to overlie 

 a great series which is frequently well exposed on the beach for a 

 distance of three and a half miles, beyond which the rocks are concealed 

 by the superficial deposits of the flat land about Spit Point. East of 

 the greenish ashy sandstones and shales first described, this series con- 

 sists of dark shales, more or less arenaceous, and a great thickness of 

 massive or thin-bedded sandstones, with occasional layers of well round- 

 ed conglomerate and frequent zones characterized by large calcareous 

 nodules. Toward the base, fragments of coal, produced from drift wood, 

 are frequently imbedded in the sandstones. With the exception of these 

 conglomerate layers, the series so much resembles that of subdivision C, 

 as represented on the north shore of Bear-skin Bay, that it is probable 

 it belongs to this subdivision. The fossils found, though not very 

 numerous, also seem to resemble those of C. It is therefore sujDposed 

 that a fault, with about the position marked on the map, crosses the 

 mouth of the inlet east of the Alliford Bay synclinal, and by an exten- 

 sive downthrow to the east causes the repetition of the lower shales, 

 which, between the line of the fault and eastern end of the section, 

 must be represented in nearly their entire thickness. 



The thickness of the entire series of rocks belonging to the 



Probably be 

 long to C. 



