Cretaceous marine Teleostei from the basal Kanguk Formation, Banks Island, Northwest Territories

1978 ◽  
Vol 15 (11) ◽  
pp. 1799-1807 ◽  
Author(s):  
Mark V. H. Wilson

A marine teleostean assemblage, from within 2 m of the base of the Upper Cretaceous Kanguk Formation on Banks Island, is dominated by scales of Osmeroides? transversus and Ichthyodectes ctenodon, as well as bones of a primitive teleost tentatively referred to the salmoniforms. The fish indicate a shallow, calm paleoenvironment. Possible mechanisms of deposition include aerobic flotation decay, scale loss by living fish, and deposition of carnivore feces. The assemblage indicates a Cenomanian or Turonian age for the basal Kanguk, with an Early Turonian age preferred by correlation with the late Early Turonian fishes of Lac des Bois, Northwest Territories.

1991 ◽  
Vol 27 (4) ◽  
pp. 527-533 ◽  
Author(s):  
John E. Blake ◽  
Bruce D. McLean ◽  
Anne Gunn

1978 ◽  
Vol 15 (7) ◽  
pp. 1205-1207 ◽  
Author(s):  
Douglas A. Archibald ◽  
Alan H. Clark ◽  
Edward Farrar ◽  
U Khin Zaw

K–Ar dating of magmatic biotite, and of hydrothermal biotite and muscovite, demonstrates that quartz monzonite intrusion and exoskarn scheelite mineralization at Cantung, N.W.T., took place over a brief interval in the Upper Cretaceous (ca. 91 Ma). The regional age relationships of magmatic and ore-forming activity in the Logan–Mackenzie Mountains are poorly defined, but it is tentatively inferred that tungsten mineralization may have been related to a late stage in the plutonic development of the area.


2006 ◽  
pp. 75-86
Author(s):  
Sarah Marsh ◽  
Suzanne de la Barre

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