The Arctic Alaska-Canada Connection Revisited
Jaime Toro, West Virginia University
Frances Toro, DOE NETL
Ken Bird, USGS
Chris Harrison, GSC
Wegener, 1929
Canada
Basin
Eurasia Basin
IBCAO, 2001
Amerasia Basin
Arc
tic
Ala
ska-
Chu
kotk
a
Canada
Basin
Eurasia BasinAmerasia Basin
Rotational Model (Grantz et al. 1990)
Rotational Model
Restoration
Grantz et al. (1990)
Embry, 1990
Comparison of the Stratigraphy of the North Slope Basin to the Sverdrup Basin
North Slope Stratigraphy
K. Bird, USGS
MEGA-SEQUENCE
Brooks Range
North Slope
Canada Basin
Prince Prince Patrick Patrick IslandIsland
Seismic Line along the North Slope CoastNESW Barrow Arch
Brookian SequenceBrookian Sequence
Franklinian SequenceFranklinian SequenceEllesmerian
Ellesmerian
BeaufortianBeaufortian
Seismic Line along the North Slope Coast
NEBarrow Arch
Brookian SequenceBrookian Sequence
Franklinian SequenceFranklinian Sequence
Peard#1 Walakpa#1 S. Barrow#1
Carboniferous
CarboniferousLowerLower TriassicTriassic
Upper TriassicUpper Triassic
SW
Brooks Range
CarbCarb.
PermPerm..
L. Trias
L. Trias.
L. Jur.
L. Jur.
North Slope
R12
Brooks Range
North Slope
Canada Basin
Prince Prince Patrick Patrick IslandIsland
76o
77o
Eglington Is.
Melville Is.
Prince Patrick Is.
Brock Is.
MackenzieKing Is.
Lawver et al. (2002)150 Ma
Late Jurassic
120 MaEarly Cretaceous
Lawver et al. (2002)
Geology: Persits and Ulmishek, (2003), USGS
Aeromagnetic Data: Glebovsky et al. (2000), Naval Research Lab
Conclusions
• Ellesmerian onlap edges provide a specific link between the North Slope and Prince Patrick Island
• The Rotational Model best fits the geological and geophysical data
• The problematic area is in western Chukotka and the Siberian Shelf
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