APPENDIX I. 463 



out, that intrusive masses are found in great quantities along this 

 line. 



It is round the great plane of Archaean rock that the aforesaid 

 sinking took place, and the dip in Hayes Sound and the western part 

 of Jones Sound is towards the north-north-west. About Bjornekap 

 and Heureka Sound, however, it is just as frequently towards the south- 

 south-east, though without real folding. This does not occur until the 

 northern side of Greely Fjord is reached. 



Continuing westward along the coast of Grinnell Land, we see folds 

 in the Triassic limestones, shales, and sandstones, the axis of the folds 

 ranging north-east by south-west. The folding is nowhere pronounced, 

 and disappears towards Lands Lokk. It does not seem to continue on to 

 Heiberg Land, though, on the other hand, we know it to be found at 

 Robeson Channel (see H. "W. Feilden and De Ranee, ' Geology of the 

 Coasts of the Arctic Lands,' etc., Quarterly Journal of the Geological 

 Society, vol. xxxiv. p. 556, London, 1878). 



Can it be the axes of the folds from the north side of Greely Fjord 

 which appear at Black Cape, Cape Rawson, and Cape Cresswell ? And 

 could Feilden's Cape Rawson beds, within whose horizon probably 

 Mesozoic * as well as Tertiary deposits (Cape Murchison) are known to 

 occur, possibly be the Mesozoic shales and sandstones of Heureka 

 Sound ? 



As will be seen from the foregoing, the series of Siluro-Devonian 

 sedimentaries in south-western Ellesmere Land, as well as the Triassic 

 deposits farther north, take part in the dislocations. Some of these, 

 if several systems exist, are younger at any rate than the Triassic. 



On the other hand, Miocene sand and lignite occur east of Blaa- 

 manden in an isoclinal strike valley bounded by what are presumably 

 Mesozoic sandstones lying in a horizontal position ; and, similarly, 

 wherever Tertiary deposits were observed, the stratification was undis- 

 turbed. It must, therefore, be permissible to suppose that the more 

 conspicuous dislocations are post-Triassic, but pre-Miocene. 



In connection with this may also be mentioned the ubiquitous 

 traces of a movement in the earth's crust, a ' rising of the land,' in a 

 geologically late period. Ancient sea-margins in the form of terraces 

 are a very common phenomenon. They are everywhere to be found in 

 the tracts adjacent to Hayes Sound, and at Fort Juliana, to a height of 

 570 feet. The highest measured raised beach at Rutherford! andet was 

 384 feet, and on Bedford Pirn Island 344 feet. 



At the head of Gaasefjord in Jones Sound the highest terrace 

 measured 4GG feet, and at a similar, perhaps somewhat greater elevation 



* At Cape Baird and Antoinette Bay. 



