Palynology and age of the Scott Inlet inliers of Baffin Island (Northwest Territories)

1985 ◽  
Vol 22 (10) ◽  
pp. 1542-1545 ◽  
Author(s):  
Elliott Burden ◽  
David Holloway
Keyword(s):  
Northwest Territories ◽  
Sea Level ◽  
Baffin Island ◽  
Quaternary Deposits

Scott Inlet inliers, previously regarded as Cretaceous–Paleogene, are reinterpreted on the basis of palynomorphs as Quaternary deposits derived from the erosion and transport of nearby (probably offshore) Cretaceous strata during periods of high sea level.

Late glacial and post-glacial history and emergence of the Ottawa Islands, Hudson Bay, Northwest Territories: Evidence on the deglaciation of Hudson Bay

1969 ◽  
Vol 6 (5) ◽  
pp. 1263-1276 ◽  
Author(s):  
J. T. Andrews ◽  
G. Falconer
Keyword(s):  
Northwest Territories ◽  
Sea Level ◽  
Late Glacial ◽  
Hudson Bay ◽  
Baffin Island ◽  
Glacial History ◽  
The West ◽  
Radiocarbon Dates ◽  
Northeastern Part ◽  
Present Rate

The Ottawa Islands are in the northeastern part of Hudson Bay. Evidence from crossing striations suggests that the earliest recorded glacial movement was toward the northeast. With deglaciation of Hudson Strait and central Hudson Bay the ice movement shifted progressively in an anti-clockwise direction, with the final movement being toward the west–southwest. The islands were deglaciated between 7610 and 7250 radiocarbon years ago. The marine limit is 158 m above sea level. Deltaic deposits below the marine limit are grouped into sets that correlate with glacial advances in Labrador–Ungava and Baffin Island, and with palynological results from Keewatin, suggesting that they reflect climatically induced processes rather than a balance in eustatic–isostatic movements. Radiocarbon dates on marine molluscs enable postglacial uplift and emergence curves to be drawn, which agree closely with predicted curves. Rates of uplift were about 0.06 m yr−1 at 6500 yr B.P., whereas the present rate is about 0.008 m yr−1. The deglaciation of Hudson Bay was marked by the splitting of the ice sheet along the submarine deep that trends southward between Mansel and Coats islands toward the southwest coast of the bay.

Etude sedimentologique de quelques depots quaternaires marins entre Nice et Grimaldi

1963 ◽  
Vol S7-V (4) ◽  
pp. 580-586
Author(s):  
Jean Claude Miskovsky
Keyword(s):  
Sea Level ◽  
Coarse Sand ◽  
Interglacial Period ◽  
Quaternary Deposits ◽  
Southern France ◽  
Marine Sand ◽  
Granulometric Analysis ◽  
Quartz Grains ◽  
Dépôts Quaternaires

Abstract Samples studied correspond to the former levels of the sea recognized in the Quaternary deposits between Nice and Grimaldi (southern France). The highest level recognized is at 165 meters, representing the end of the Pliocene; the second level, at 108 meters, represents the Calabrian; deposits at 90 meters are early Quaternary; the sea level at 30 meters is also early Quaternary--pre-Mindel-Riss; deposits at 11 meters correspond to the type Tyrrhenian (Riss-Wuerm). Granulometric analysis of elements less than 35 microns shows that the littoral deposits have a smaller proportion of fine elements than those deposited under several meters of water. The beach pebbles and littoral deposits contain poorly sorted coarse sand, while above, the wind-deposited marine sand is fine and well-sorted. These sediments belong to an interglacial period when eolian forces were minimal--a conclusion based on the scarcity of round, dull quartz grains. Granulometric curves are included.

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