﻿ITotices of Memoirs — Prof. Hdbert — Folds of the Chalk, 75 



of the terrace is above the summit level of the pass, it will be 

 difficult to avoid the conclusion that it is an old sea-margin. At the 

 time I first saw the water-mark and terrace, I had no hesitation 

 about ascribing them to the sea; but on returning to England, 

 I found that the Norwegian geologists do not admit so great a 

 depression. I cannot see that the mere absence of shells is an 

 insuperable objection to the beds in question being marine ; for 

 surely the climate might have been unfavourable to the existence of 

 shell- fish. 



If, on the other hand, the said terrace is on a level with the water- 

 shed (and there is certainly no great difference between them), one 

 is irresistibly led to think of the similar case of the parallel roads of 

 Glenroy, and to speculate on this terrace too having been due to the 

 waters of a gigantic Marjelen See, dammed back by ice till it over- 

 flowed the summit of the pass at Molmen ; and it is significant that 

 I could see no trace of terrace or water-mark on the Eomsdal side 

 of the pass. 



But the above is not all. There is in the same district a second 

 horizontal mark on the solid rock, several hundred feet higher than 

 the 2000 one. This, too, appears to correspond with sand-terraces in 

 the recesses of the high glens ; but I was not able to visit it, and can 

 form no more than a guess as to its height ; it probably is as high as 

 the plateau of the Dovre Fell, — that is, more than 3100 feet above the 

 sea. This plateau I know to be covered with large gravel mounds 

 between Dombaas and Folkstuen. Here, again, it is striking, that 

 the water-mark should seem to correspond with the level of a water- 

 shed. But it is useless to speculate, and would be absurd to offer 

 an opinion on the subject without examining the ground. I will 

 merely say, that only one of two conclusions seems open to us ; 

 either the terraces and water-marks are old sea-margins, or else they 

 are the margins of huge ice-dammed lakes. 



The fells rising above the high-level terraces and water-marks are 

 rounded, and of a general moutonneed look. This general glaciation 

 of the high fells must have taken place either before or simultaneously 

 with the deposition of the terraces, as any subsequent ice-sheet would 

 inevitably have swept them clean way. 



The Norwegian Geological Map represents the valley, above and 

 below Dovre, for the distance of forty-one kilometres, as occupied by 

 alluvial and post-glacial sand; but whether this is intended to include 

 the high-level terraces as well as the sand-heaps in the valley 

 bottom I do not know, but presumably it is. 



iTOTiciES oip 3V[::H!^v^ozI^s. 



I. — Ondulations de la Ckaie dans le Nord be la France — 

 Deux Systebies de Plis, — Age de ces Plis. Par M. Hebert. 

 (Annales des Science Geologiques, tom. vii. No. 2, Paris, 1876.) 



IN a paper read before the Societe Geologique de la France, in 

 June, 1875, M. Hebert described a series of nearly parallel 



