I PROCEEDINGS OF THE COLUMBUS MEETING 



Feet 



a. Bandy shales, with some bands of arenaceo-argillaceous shales ; a thin layer of interforma- 

 tional conglomerate occurs ■'•'■'• feel from the bottomi and at IT feet from the bottom arc 

 some calcareous layers and nodules 51 



t>. Lighl gray quartzitic sandstone in three principal layers, 22, 24, and 20 inches thick, re- 

 spectively by z 



c. arenaceous shales, with thin layers of dirty gray sandstone ; well marked' annelid trails 



ar on some of the beds of sandstone and shale 51 



Several hundred feet of the section along the shore are here concealed by drift, 

 1 nit to the eastward indurated gray sandstones and shales show in the cliffs where 

 they are broken and distorted by dikes of basalt. 



At the slate quarries east of Til ton head, on Smith sound, the basal beds of the 

 Cambrian — green and reddish purple shales, here cleaved into slates — rest on a 

 scries of gray sandstones and shales, the dip and strike being the same, but with 

 a thin bed of conglomerate at the base of the Cambrian. The pre-Cambrian rocks 

 arc' considerably faulted and folded, but they are not the Signal Hill sandstones or 

 conglomerates. 



We next crossed to the south side of Smith sound and found the section partly 

 concealed. Passing around Random island to Hickmans harbor, on Random sound, 

 a section was found east of the harbor showing the Signal Hill sandstone and con- 

 glomerate, and, resting conformably on it, a series of sandstones, quartzitic sand- 

 stone, and sandy shales extending up to the base of the Cambrian. The Cambrian 

 section extends up to the Hyolithes limestone of the Smith Point section. For the 

 terrane between the Signal Hill and the Cambrian Mr Howley and I agreed upon 

 the name Random. 



At Hickmans Harbor point the Signal Hill conglomerate strikes north 40 degrees 

 east; dip, 68 degrees east. At the summit of the Random terrane the strike is 

 north 50 degrees east; dip, 70 degrees southeast. The section, as measured by 

 Mr Howley, is as follows, downward: 



('AMI! 1U AN. 



Random : „ Feet 



1. Reddish gray quartzitic sandstone 1% 



2. Light greenish .gray rlaggy sandstones 3 



3. Hard gray quartzitic sandstone f>% 



4. Micaceous gray and greenish flaggy sandstones 68 



5. Gray sandstones 10 



6. Greenish and bluish gray slaty arenaceous beds, breaking up into tine shales in 



places 26 



7. Pale pinkish quartzite in layers l to :j feet 25 



s. Reddish hrown hard sandstone 21 



9. Massive bedded \\ hite quartzite 10 



Id. .Massive and thin bedded hard gray sandstones and shales On 



11. Dark gray flaggy sandstones 55 



12. Massive bedded white quartzite 63 



13. Massive bedded reddish gray quartzitic sandstone 31 



41.) 



Signal Una, conglomerate. 



In number 4 of this section I found several varieties of annelid trails, including 

 a variety about 5 millimeters broad, a slender form .] millimeter broad, and an 

 annulated trail 2 to 3 millimeters in width. 



There is a fold in the Random rocks of the section forming a sharp syncline 

 and anticline, and I believe that a portion of the upper part of the Random ter- 



