O. T. Grønlie. — Kvartærgeologiske iakttakelser. 187 



Perlen islandicus, Müll. Macoma calcaria, Ghemri. 



Mytilns ediilis, Lin. Mya truncata, Lin. 



Crenella decussata, Mont. Lunatia grönlandica, Beck. 



Cardiain edule, Lin, Littorina litlorea, Lin. 



Cardinm echinalnm, Lin. Aporhais pes pelecani, Lin. 



Cijprina islandica, Lin. Admete viridula, Fabr. 



Astarte banksii, Leach. Bnccinnm nndatiun, Lin. 



Astarte eliptica, Brown. Neptunea despecta, Lin. 



Vrm/.s gallina, Lin. Cylichna alba, Brown. 



Axinus flexuosus, Mont. 

 o: 9 arctic, boreal and 4 lucitanic species. 



The tough clay must have been deposited at some 

 distance from the shore-line and on account of the loca- 

 lities at a considerable depth, at least 160 m., during the 

 rise of the land. This rise went on till the land lay only 

 a trifle higher than now. Then the arctic clay was expo- 

 sed to the running water, and during a following post- 

 glacial sinking of the land, the Tapes-sinking, the younger 

 fauna lived here. The land sank about 70—7,") m. below 

 the present sea- le vel. 



In the Saltdal the marine sediments are built up in 

 terraces ascending to 125 m. above sea-level near the 

 Junkerdalsur. There is an older deposit of clay and a 

 younger deposit of sand and gravel. Along the sides of 

 the valley the clayey sediments rise nearly to the upper 

 terrace flats, only covered by a layer of sand about 2 m. 

 thick (at Drage). In the river bed the clay is seen in the 

 stone covered bottom and in the bluffs at several places, 

 but here, as a rule, the sandy sediments are predominant, 

 and most terraces consist of sand and gravel from top to 

 bottom. The sand is deposited in a channel, dug out by 

 the running water in the clayey sediments that once 

 filled the valley to 80 — 90 m. above the present sea-level. 

 This channel dates from the boreal time when the shore- 

 line lay only a little higher than now. The sand was 



