1 90 The American Geologist. September, i898 
most abundant on that side of the sedimentary belt (Kook, 
Kaersut), where marine fossils appear to be wanting. At one 
of the eastern localities (Ujarartorsuak) fresh-water shells oc- 
cur with plants. To the west, dark homogeneous shales with 
abundant remains of marine animals predominate. 
(4) Sedimentation appears to have been continuous in 
some portion of this region throughout Cretaceous and early 
Tertiary times, since no marked unconformities or unmistak- 
able evidence of interruption of deposition have been seen. 
In certain sections, however, there appears to be, either in a 
variable thickness of the series or a slight difference of atti- 
tude, evidence of movements or erosion prior to the imposi- 
tion of the Tertiary basalt cap, though these may be only local 
or of minor extent. But in many well exposed sections there 
is no local trace of sedimentary discontinuity between the 
Mesozoic and Tertiary. 
(5) The entire thickness of the clastic deposits is proba- 
bly over 3,500 feet. They are divided by Heer into four series, 
on the basis of their vegetable contents. Of the lowest of 
these, tlie Kome series, developed on the north coast of the 
peninsula, a thickness of probably not over 700 feet is ex- 
posed above tide. The discovery of additional dicotyledons 
in the Kome series, from which hitherto only Populus pri- 
mjeva was known, and which was regarded as Urgonian in 
age by Heer, casts serious doubt on the reference of those beds 
to so low a stage in the Lower Cretaceous. The flora as a 
whole is, however, to be compared with that of the Virginian 
Potomac formation, with some, perhaps the upper, portion of 
which the Kome series is probably synchronous. 
The Atane series, hitherto not positively known on the 
north shore of Nugsuak peninsula, is clearly present at Ujarar- 
torsuak with characteristic Atane plants. Farther west, at 
Kook Angnertunek and Niakornat, the dark homogeneous 
shale series probably represents both the Atane and Patoot 
members of the Upper Cretaceous, since of the marine organ- 
isms found here some are identical with those occurring at 
Ata and Patoot, the typical localities for the two divisions of 
the Upper Cretaceous. The marine invertebrates from the 
Atane series, which Heer correlated by means of fossil plants 
with the Cenomanian of Europe, strongly indicate that the 
