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Eurekan Structures of the Ekblaw Lake Area, Ellesmere Island, Canada
Grantland Uplift is a major Tertiary structure of Ellesmere Island, Northwest Territories, that overthrusts lower Paleozoic and younger strata onto Mesozoic and older strata. Investigations of the structure in the Ekblaw Lake area suggest that the style of deformation resembles a thin-skinned overthrust deformation like the main ranges of the Canadian Rocky Mountains. It also resembles in style and timing the structure formed by Tertiary orogeny in Svalbard. This contrasts with previous suggestions that differential uplift was the dominant mechanism of deformation. Grantland Uplift is suggested to be a compressive tectonic feature that formed during the medial phase of the Eurekan Orogeny.
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