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Taters versus sliders; evidence for a long-lived history of strike-slip displacement along the Canadian Arctic transform system (CATS)
Journal article   Open access

Taters versus sliders; evidence for a long-lived history of strike-slip displacement along the Canadian Arctic transform system (CATS)

William C McClelland, Justin V Strauss, Maurice Colpron, Jane A Gilotti, Karol Faehnrich, Shawn J Malone, George E Gehrels, Frnacis A MacDonald and John S Oldow
GSA today, Vol.31(7), pp.4-11
07/2021
DOI: 10.1130/GSATG500A.1
url
https://doi.org/10.1130/GSATG500A.1View
Published (Version of record) Open Access

Abstract

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 terrances 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.
 Arctic Ocean Marine Environment Structural Geology Tectonics accretion Arctic region Caledonian Orogeny Canada Basin Canadian Arctic transform system crustal shortening deformation displacements Ellesmerian Orogeny extension tectonics faults kinematics Laurentia Mesozoic paleogeography Paleozoic Pearya shear zone Porcupine shear zone reactivation reconstruction shear zones strike-slip faults terranes transpression

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