Page:Report of the Second Norwegian Arctic Expedition in the "Fram," 1898-1902 (volume 4).djvu/494

 1898- 1902. No. 36.] SUMMARY OF GEOLOGICAL RESULTS. 25 Ca rdiuni islandicum Macoma calcaria Mi/a truncata Saxicava pholadis Lepeta cceca Balanus sp. On the east side of Moskusfjord, to the west of Havnefjord, the following species were found in clay about 65 m. above sea level: Macoma calcaria Pecten islandicus Cardium islandicum Mya truncata var. uddeuallensis Saxicava pholadis Balanus sp. Terraces of about the same maximum height as found by SCHEI in Ellesmere Land are known to occur in other districts of the Arctic Archi- pelago. In the report of A. P. Low on the cruise of the Neptune V p. 235, is stated that along the eastern shores of Baffin Island, terraces were constantly seen, which were estimated to rise from 500 to 700 feet above the sea. The same height is given for terraces on the western side of Hudson Bay, while at Cape Wolstenholme, on the south side of Hudson Strait, the terraces rise to 800 feet. The highest terrace seen (by Dr. BELL) on the north side of Hudson Strait had an elevation of 528 feet above the sea. Concerning the remarks in the paper cited as to the theory of the greatest post-glacial land-uplift being found where the accumulation of ice was greatest, the quaternary geology of Arctic America does not, in the opinion of the present author, contradict it, since the glaciation in Ellesmere Land seems, indeed, to have been at one time much more intense than at present. As SCHEI in his ^Summary of geological results" strongly emphasizes the size of the glaciers has not been greater than at present, since the high terraces were formed; that is, we have had no melting off during this rise of the land from about 180 m. to the present level - - in other words in fairly recent time. The high marine terraces are found so near present glaciers that we must, on the contrary, assume that the latter must have advanced in this youngest time. This is shown also by the fact that in the morainic material formed at the margin of Leffert glacier at Rice Street, were found molluscan shells (Mya truncata and Astarte arctica), evidently moved from an original deposit farther inland, now covered by ice. As to the present glaciation of Ellesmere Land, what SCHEI in his report, p. 8, writes on that subject, is cited below: 1 Ottawa 1906.