Editing Hudson Bay (section)

===Southeastern semicircle===
Earth scientists have disagreed about what created the semicircular feature known as the [[Nastapoka arc]] that forms a section of the shoreline of southeastern Hudson Bay. The Nastapoka arc forms a 155 degree curve and appears to be very circular.<ref name=":1">{{Cite web |date=28 November 2022 |title=Hudson Bay's Nastapoka Arc |url=https://earthobservatory.nasa.gov/images/150665/hudson-bays-nastapoka-arc |access-date=10 October 2023 |website=earthobservatory.nasa.gov}}</ref> Noting the paucity of impact structures on Earth in relation to the Moon and Mars, [[Carlyle S. Beals]]<ref name="Beals1968a">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.</ref> proposed that it is possibly part of a [[Precambrian]] extraterrestrial impact structure that is comparable in size to the [[Mare Crisium]] on the Moon. In the same volume, [[John Tuzo Wilson]]<ref name="Wilson1968a">Wilson, J.T., 1968. ''Comparison of the Hudson Bay arc with some other features.'' In: Beals, C.S. (Ed.), pp. 1015–1033. ''Science, History and Hudson Bay'', Vol. 2. Department of Energy Mines and Resources, Ottawa.</ref> commented on Beals' interpretation and alternately proposed that the Nastapoka arc may have formed as part of an extensive Precambrian continental collisional [[orogeny|orogen]], linked to the closure of an ancient [[Oceanic basin|ocean basin]]. The current general consensus is that it is an arcuate boundary of tectonic origin between the Belcher Fold Belt and undeformed basement of the Superior Craton created during the Trans-Hudson orogeny. This is because no credible evidence for such an [[impact structure]] has been found by regional magnetic, [[Bouguer anomaly|Bouguer gravity]], or other geologic studies.<ref name="DarbyshireOthers2010a"/><ref name="EatonOthers2010a"/> However, other Earth scientists have proposed that the evidence of an Archean impact might have been masked by deformation accompanying the later formation of the Trans-Hudson orogen and regard an impact origin as a plausible possibility.<ref name="GoodingOthers1992a">Goodings, C.R. & Brookfield, M.E., 1992. ''Proterozoic transcurrent movements along the Kapuskasing lineament (Superior Province, Canada) and their relationship to surrounding structures.'' ''Earth-Science Reviews'', 32: 147–185.</ref><ref name="BleekerOthers2004a">Bleeker, W., and Pilkington, M., 2004. ''The 450-km-diameter Nastapoka Arc: Earth's oldest and largest preserved impact scar?'' ''Program with Abstracts – Geological Association of Canada; Mineralogical Association of Canada: Joint Annual Meeting, 2004'', Vol. 29, pp. 344.</ref>