Nr. 6] KVARTÆR-STUDIER I TH ONDHJKMSFELTET 123 



har overlevet fra interglacial tid eller ogsaa kan være indvaiidret 

 i glacial eller senglacial tid langs en isfri kystrand fra nordost 

 (Rusland) « (,L. c. pag. o2o). Denne anskuelse falder omtrent sam- 

 men med xVxDR. M. Hansen's (Naturen 1904, pag. 143 — 156 & 

 168 — 179). Landmark søkte i sine »Reliefstudier fra Søndfjord« 

 (Bergens museums aarbog 1909, no. 9) og i »Fortsatte relief- 

 studier fra Vestlandet særlig Søndfjord« (L. c. 1913, no. 4) fra 

 overtlateformerne selv at paavise interglacial erosionsvirksomhet. 

 Og fra Trondhjemsfeltet nærliggende omraader i øst berettede 

 HoGBOM >0m interglaciala bildningar i Jemtland « (Geol. Forn. 

 Forb., Stockholm, B. 15 (1893), pag. 28). 



xVllerede i det foregaaende er omtalt de forskjellige fænomener, 

 der knytter sig til den kontinentale platform, saasom kystflåter 

 under og over den nuværende strandlinje og submarine dale eller 

 gamle, undersjøiske elveleier samt aflukkede bassiner i form af 

 fjorddyp, der vistes at kunne paa en naturlig maate bli indord- 

 net i samme grupi)e som vore indsjøer. Hull »is convinced that 

 were it possible to strip the floor of the North Sea of its sedimen- 

 tary covering these channels would be found traversing the floor 

 of the continental platform, and ultimately opening out by canon- 

 like channels on the floor of the Arctic Ocean. The phenomena 

 here observed, or inferred, have their representatives along the 

 coasts of the British I sies and Western Europe. In both cases 

 there is the shallow continental platform, terminating in a deep 

 aud rapid descent to the floor of the abyssal ocean, and traver- 

 sed by channels of ancient rivers traceable by the soundings in 

 the case of Western Europe, or inferential in the case of We- 

 stern Scandinavian (Report 7 Ist meeting of the British Associa- 

 tion for the Advancement of Science, Glasgow 1901, pag. 662). 

 Jerwis har i en kort opsats: "Thalassographical and thalasso- 

 logical Notes on the North Sea« (Victoria Institute Transactions 

 1900) efter karterne sammenstillet endel opiysninger om fjord- 

 dybder og fjordrenderne utenfor kysten; saaledes omtales her 

 ogsaa den norske rende, eller palaeoskandinaviske kanal. 



I 1898 skrev Warren Upham om »Fjords and submerged 

 valleys of Europa « (The American Geologist, Vol. XXII, pag. 

 101 flg.). Der omtales ved den anledning en række norske 

 fjorde, deriblandt ogsaa »Trondhjem fjord, with Beitstad fjord«, 

 og han kommer til det resultat, at » soundings to the bottom of 

 these submarine valleys range from 500 to 1.420 feet, agreeing 

 well with this estimate of 1.400 or 1.500 feet as the maximum 

 amount of the Late Tertiary clevation. These channels are 

 situated far offshore, with no promivent higher tracts so near 

 as to possibly account for exceptionally powerful glacial erosion 

 along their courses, such as may be supposed to have greatly 



