PALEOZOIC TERRANE BENEATH CAMBRIAN. 47 



In the more easterly basin of the Eopalaeozoic sediments on 

 Smith Sound, the conglomerate at the base of the Cambrian is 

 in more massive beds, and the fragments are largely small 

 pebbles of red slate, derived from the Huronian terrane. This 

 shows beds of such red slate a few hundred yards to the west 

 of the place of the conglomerate. 



The basal conglomerate of the Cambrian may therefore vary 

 much in composition in the different localities where it has 

 been recognized. It separates the Cambrian from the Etche- 

 minian and indicates an emerged area of the latter sediments 

 when the Cambrian rocks were being formed. 



The Section at Smith Sound. — Three years ago Mr. J. P. 

 Howley, the director of the Geological Survey of Newfoundland, 

 sent to the writer a section of the Cambrian measures on the north 

 shore of Smith Sound, together with some fossils which he had 

 collected there and at Random Island on the south side of this 

 sound. The fossils were found to be mostly of upper Cambrian 

 age, there being an Olenus related to 0. cataractes. Salt., a 

 Parabolina having affinity with P. spimdosa, Wahl. and a Pro- 

 topeltura resembling P. acanthtira, Brogg. The Paradoxides 

 -zone was indicated by a few other fossils, viz., an Agraulos like 

 A. holocephalus, Matt., and a Liostracus near L. Oiiangondianus, 

 Hartt. From the same locality came an Acrothele apparently 

 A. Matthezvi, Hartt, which might indicate either the Paradoxides 

 ■or the Protolenus zone. 



The section was of special interest to the author as showing 

 that below the Paradoxides beds there was a continuous section 

 of underlying, and not greatly disturbed, measures that gave 

 promise of older faunas ; in fact, Mr. Howley indicated several 

 horizons with obscure fossils, and a limestone with Agraidos 

 streniius and Straparollina remota. 



The section (Fig. 3) shown in this article is practically Mr. 

 Howley's section reduced to one-tenth of his scale, with the dips 

 preserved as he gave them, but with some data and a, classifica- 

 tion added by the author. By this section it becomes apparent 

 that in this basin of Palaeozoic sediments we have two terranes, 

 of which the overlying one has a higher dip than that beneath. 



