1898-1902. No. 28.1 THE CAMBRO-ORDOV1CIAN BEDS. 



contained in I lie diaries, and the analyses carried out after the return, 

 in "Petrographische Resultate der 2ten Fram-Expedition" 1 . These rocks, 

 which comprise both acid and more basic deep-eruptives, (all characterised 

 by containing rhombic pyroxen) presumably belonging to a newer division 

 of the archaean rocks, constitute the principal features of the mountain 

 mass south of Buchanan Bay, Hayes Sound and Beitstad Bay. 



Upon these rocks then follow northwards the younger sedimentary 

 beds from underneath. 



The locality at which SCHEI studied more particularly the oldest portion 

 of the beds, is situated at the south-eastern corner of Bache Peninsula, 

 at Cape Camperdown. Here at the bottom, the older eruptives can 

 still be seen, consisting according to BUGGE of a hypersthene-quartz- 

 potash syenite. Above this syenite we have the oldest sedimentary 

 beds with a slight N-N-W dip. 



SCHEI thus describes the series at Cape Camperdown in his Pre- 

 liminary Report on the Geological Observations made during the Second 

 Norwegian Polar Expedition of the "Fram". (Journal of the Royal 

 Geographical Society 1903). 



"Granite crops out at Cape Camperdown on Bache Peninsula, and 

 is overlain by an "arcose", in part conglomerated variety of sandstone, 

 disposed in flat strata that dip towards the north-north-west. Its thick- 

 ness scarcely exceeds 500 feet, although the contour rises considerably 

 higher in consequence of the intrusion of diabase 2 , which attains al- 

 together a thickness of probably 350 feet. The upper strata of this sand- 

 stone, which have been gradually metamorphosed, pass over by alternate 

 stratification into a series of grey arenaceous and marly shales and limestone 

 conglomerates. These conglomerates and schists arranged in alternate 

 layers that vary from a few inches to 8 or 10 feet each in thickness 

 are built up into a series that attain a total thickness of 650 to 1000 

 feet, but are interrupted by two compact beds of yellowish- grey lime- 

 stone some 160 feet in thickness. 



These again are overlain by a similar series to that beneath, except 

 that the limestone conglomerates predominate over the shales. In a 

 detached "boulder" which in all probability had fallen from one of the 

 beds of yellowish-grey limestone just mentioned, we discovered traces of 

 fossils. " 



1 Report of the Second Norwegian Arctic Expedition in the Fram 1898 1902, 

 No. 22. Published by Videnskapsselskapet i Kristiania, 1910. 



2 Described by BUGGE. 



