This article may be too technical for most readers to understand. Please help improve it to make it understandable to non-experts, without removing the technical details.(January 2024) (Learn how and when to remove this message)
Nastapoka arc
The Nastapoka arc is a curved segment of the southeastern shore of Hudson Bay in Quebec, Canada, that extends from the most northerly of the Hopewell Islands to Long Island near the junction with James Bay. It is a prominent, near-perfect circular arc, covering more than 160° of a 450-km-diameter circle.[1] While the circular shape has led to suggestions that it represents an impact crater, there is no evidence for this hypothesis, and it is thought to have been formed as a result of lithospheric flexure during the Trans-Hudson orogeny.[2]
^Beals, C.S., 1968. On the possibility of a catastrophic origin for the great arc of eastern Hudson Bay. In: Beals, C.S. (Ed.), pp. 985-999. Science, History and Hudson Bay, Vol. 2, Department of Energy Mines and Resources, Ottawa.
^Cite error: The named reference EatonOthers2010a was invoked but never defined (see the help page).
The Nastapokaarc is a curved segment of the southeastern shore of Hudson Bay in Quebec, Canada, that extends from the most northerly of the Hopewell...
semicircular feature known as the Nastapokaarc that forms a section of the shoreline of southeastern Hudson Bay. The NastapokaArc forms a 155 degree curve and...
archipelago in the southeast part of Hudson Bay near the centre of the Nastapokaarc. The Belcher Islands are spread out over almost 3,000 km2 (1,200 sq mi)...
Aleutian Arc, a large volcanic arc in the U.S. state of Alaska Nastapokaarc, a circular coastline in Hudson Bay arc, the command-line interface for ArcInfo...
largest national park, opened in 2012. Geology portal Canada portal Nastapokaarc, an embayment of Hudson Bay 140 km to the west, discredited as an impact...
province of Ontario, James Bay and Hudson Bay (including the circular Nastapokaarc) to the west, the provinces of New Brunswick and Newfoundland and Labrador...
Global Information
