Volume 31 Issue 7
Article, pp. 4-11 | Full
’Taters versus Sliders: Evidence for a Long-Lived History of Strike-Slip Displacement along the Canadian Arctic
Transform System (CATS)
Recent field-based studies indicate that the northern margin of North America is best interpreted
as a tectonic boundary that experienced a long, complex history of strike-slip displacement.
Structures juxtaposing the Pearya and Arctic Alaska terranes with North America are linked and
define the Canadian Arctic transform system (CATS) that accommodated Paleozoic terrane
translation, truncation of the Caledonian orogen, and shortening within the transpressional
Ellesmerian orogen. The structure was reactivated during Mesozoic translational opening of the
Canada Basin. Land-based evidence supporting translation along the Canadian Arctic margin is
consistent with transform structures defined by marine geophysical data, thereby providing a
robust alternative to the current consensus model for rotational opening of the Canada Basin.
Manuscript received 17 Feb. 2021. Revised manuscript received 5 Apr. 2021.
Manuscript accepted 8 Apr. 2021. Posted 10 May 2021.
© The Geological Society of America, 2021. CC-BY-NC.
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