The Arctic Alaska-Canada Connection Revisited
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The Arctic Alaska-Canada Connection Revisited
Jaime Toro, West Virginia UniversityFrances Toro, DOE NETL
Ken Bird, USGSChris Harrison, GSC
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Wegener, 1929
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Canada
Basin
Eurasia Basin
IBCAO, 2001
Amerasia Basin
Arc
tic A
lask
a- C
huko
tka
Canada
Basin
Eurasia BasinAmerasia Basin
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Rotational Model (Grantz et al. 1990)
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Rotational Model
Restoration
Grantz et al. (1990)
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Embry, 1990
Comparison of the Stratigraphy of the North Slope Basin to the Sverdrup Basin
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North Slope Stratigraphy
K. Bird, USGS
MEGA-SEQUENCE
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Brooks Range
North Slope
Canada Basin
Prince Prince Patrick Patrick IslandIsland
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Seismic Line along the North Slope CoastNESW Barrow Arch
Brookian SequenceBrookian Sequence
Franklinian SequenceFranklinian SequenceEllesmerianEllesmerian
BeaufortianBeaufortian
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Seismic Line along the North Slope Coast
NEBarrow Arch
Brookian SequenceBrookian Sequence
Franklinian SequenceFranklinian Sequence
Peard#1 Walakpa#1 S. Barrow#1
CarboniferousCarboniferousLowerLower TriassicTriassic
Upper TriassicUpper Triassic
SW
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Brooks Range
CarbCarb.
PermPerm..
L. Trias
L. Trias.
L. Jur.
L. Jur.
North Slope
R12
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Brooks Range
North Slope
Canada Basin
Prince Prince Patrick Patrick IslandIsland
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76o
77o
Eglington Is.
Melville Is.
Prince Patrick Is.
Brock Is.
MackenzieKing Is.
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Lawver et al. (2002)150 Ma
Late Jurassic
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120 MaEarly Cretaceous
Lawver et al. (2002)
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Geology: Persits and Ulmishek, (2003), USGS
Aeromagnetic Data: Glebovsky et al. (2000), Naval Research Lab
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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