172 



So much is clear from the foregoing description, that the 

 rocks of Liverpool Land, in a comparatively restricted area, 

 show far greater pétrographie variations than those we know 

 from neighbouring parts of the central mass. This is true already 

 of the Ë. and S. parts of the Land, with their pegmatites and 

 very pronounced hornblende rocks, but especially of the area 

 nearest the inner part of Hurry Inlet, where granite occurs in 

 greater quantities than anywhere else in the known parts of E. 

 Greenland, and where both limestone and curiously developed 

 crystalline schists contribute to make the rock formation varied. 



Later on in this paper I shall give a more detailed descrip- 

 tion of the very interesting alnöite-like eruptive rocks which 

 appear in the same region as dikes and small masses, but will 

 pass on now to describe the more recent sedimentary rocks 

 of the district. 



II. Post-archaean sedimentary Rocks. 



Thanks to the labours of the last Expedition we have now 

 got so far in our knowledge of the geological formations of 

 East-Greenland that, even if an immense amount of detail work 

 still remains to be done, the time seems to have come for us 

 to attempt to offer a complete survey of what we know. Little 

 by little we have got to know a large number of series of form- 

 ations, the majority of which, however, are either entirely 

 lacking in, or are only very scantily supplied with fossils. It 

 is, consequently, only through careful stratigraphie studies that 

 one can hope, where indeed it is possible at all, to elucidate 

 the question of their age, and such studies have not been 

 carried out hitherto. And so, as a rule, we must confine our- 

 selves to descriptions of certain localities, although we shall 

 see that, notwithstanding this, we can go a good way towards 

 drawing conclusions as to the age and reciprocal relations of 

 the sedimentary rocks. 



