Subsurface mapping of Ellesmerian onlaps [electronic resource] : testing the opening of the Arctic Canada Basin /
Subsurface Mapping of Ellesmerian Onlaps: Testing the Opening of the Arctic
Brian A. Connelly
Since the advent of plate tectonics in the mid-1960’s the mechanism for formation
of the majority of the world’s ocean basins has been solved. However, there are still
several remaining tectonic conundrums, such as the origin of the Arctic Canada Basin.
The most widely accepted tectonic hypothesis proposes a rotational opening of the basin
after rifting along the Northern Alaskan-Canadian Arctic margins.
Subsurface mapping the Ellesmerian strata of Northern Alaska onlapping onto the
Barrow Arch, a long-lived basement high, was carried out and then compared with
mapped strata on Prince Patrick Island, Canada, to see if they aligned. These mapped
onlaps appear to show a match between Northern Alaska and the Canadian Arctic, if
Northern Alaska is rotated back clockwise by 60o about a Euler pole located at 68.9
229oW. Along with recent gravity and magnetic anomaly data, all this new evidence
would appear to be consistent with a rotational opening.
School:West Virginia University
School Location:USA - West Virginia
Source Type:Master's Thesis
Keywords:plate tectonics basins geology
Date of Publication: