CHAPTER VI. 
SUMMARY AND CONCLUSIONS. 
OUTLINE OF THE GEOLOGICAL HISTORY OF 
THE COUNTRY AROUND JULIANEHAAB. 
The records of past geological periods found in the regions 
here considered are extremely fragmentary. The only sedi- 
mentary formations which remain are Devonian sandstone and 
superficial deposits of Quaternary age. The igneous formations 
are quantitatively much more important. They belong to two 
distinct epochs of igneous activity: the one of Algonkian and 
the other of Devonian or post-Devonian age. From a geological 
point of view, the principal interest is connected with the igneous 
activity of the latter epoch. 
The following pages contain a discussion of the nature of 
the igneous activity, but for better comprehension a brief sum- 
mary will first be given of what is known of the general geo- 
logical history of the country. 
As mentioned in the second chapter the old Archean rocks, 
which are widely distributed elsewhere in Greenland, do not 
occur in the country around Julianehaab. The oldest and 
most abundant rock in this part of Greenland is the Juliane- 
haab granite. This rock is regarded as Algonkian; it is later 
than the latest folding which has affected southern Greenland. 
