101 



results obtained show us that the basalt covers a considerable 

 tract of country, but tliat it is not continuous, as it occupies 

 two regions some distance apart. 



1) The northern basalt-area stretches from Shannon 

 Ö to Davys Sund, a distance of about 300 kilometres, in a 

 SSW. to NNE. direction. It forms quite a narrow belt, embracing 

 all the outermost islands and peninsulas along the coast-line in 

 that region. The basalt presents immence plateau like surfaces 

 and somewhat higher basalt cones project but rarely. Basalt- 

 veins occur here also fairly frequently and follow, as a rule, 

 the direction of the coast-line. 



The rock-samples examined were proved , with very few 

 exceptions, to consist of different varieties of typical basalt. 



2) The southern basalt-area covers an extensive tract of 

 country. It begins, on the north at Scoresby Sund, the 

 southern side of which consists almost entirely of basalt, as 

 do also a great part of Gaaseland and Milnes Land. It 

 also exists in the form of horizontal veins between the Rhaetic 

 Lias beds of Hurry Inlet. From Scoresby Sund, basalt 

 extends all along the coast down' to Kangerdlugsuak, a distance 

 of about 400 kilometres and it most probably stretches far inland 

 in this region, as no other rocks can be seen anywhere from 

 the coast. 



Very little is known as regards the nature and occurrence 

 of the basalt. 



Jan .Mayen is fairly well known geologically and was 

 also examined by the members of this expedition. With very 

 few exceptions, only basaltic rocks are found here, varying, 

 however, considerably in their nature. 



It is impossible to obtain a very reliable estimate of the 

 nature of the minerals contained in the basalt cavities or of 

 their relative abundance. Generally speaking, only a few more 

 or less isolated localities have been examined , and the choice 

 of these has, for the most part, depended on the condition of 



