48 



MATTHEW. 



\ 



^ 



. From the direction of the dips it would ap- 



g pear that when the Cambrian (the upper) 



■^ series was deposited upon the Etcheminian, 



" these rocks had been tilted in a direction the 



'S opposite of that which now effects them, and 



"Z had been eroded chiefly on the landward (west- 



^ ern) side. 



a; If, as the writer has inferred in a previous 



.S part of this paper, the Etcheminian sediments 



•S in the " Atlantic coast " province^ of the 



^ Cambrian sea were in an incoherent state, 



(J erosion would proceed rapidly. The exception 



^ to this rapid destruction would be the lime- 



c stones, which would have already become con- 



■^ solidated, and would supply an abundance of 



^ blocks and boulders to the new terrane. 



o Besides the limestone bed shown in this 



o 



^ section the eastern basin of Eopalaeozoic rocks 



.S on Smith Sound shows a lower bed of lime- 

 stone, and as the measures intervenincr between 



i the limestones in both basins show great 



'a numbers of layers studded with nodular cal- 



'f careous masses, an abundance of material for 



'^ building up limestone conglomerates existed 



'^ in this eastern part of Newfoundland over 



,° which the Etcheminian terrane was spread. 



■S As a consequence, it happened that while 



cl the deposits of the Protolenian and Paradox- 



^ idian zones were accumulating, every debacle 



S of a more violent character tore from the land 



o 



■I and spread over the sea-bottom the ruins of 



^ these Etcheminian limestones and nodular de- 



•^ posits. As will be seen by the section there 



o are two such fragmental beds in the Protole- 



^ nus zone and one or more in the Paradox- 



rA, ides zone in this basin on Smith Sound, 



^ lU. S. Geol. Surv. Bull. Si, PI. I. 



