159:– Glennie Complex around 1.92–1.88 Ga. Today these Palaeoproterzoic structures in the Trans-Hudson Orogen welds the Archaean Hearne and the Superior cratons. As the ocean continued to close, an Andean-style arc pluton known as the Wathaman Batholith formed 1.86–1.85 Ga. The subduction of the Manikewan Ocean stopped when the La Ronge Arc collided with Hearne. The final closure of the ocean around 1.83 Ga, when Hearne, Superior, and Sask cratons merged with the Flin Flon – Glennie Complex, was followed by a period of metamorphism that peaked around 1.82–1.8 Ga. The Manikewan Mobile Belt now covers an area of 600,000 km (230,000 sq mi) but is overlain by Middle Proterozoic
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20:
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to the west. Hearne and Rae were extensively reworked during the assembly of
Laurentia and overlain by Palaeoproterozoic cover sequences. On Hearne the most extensive such cover sequence is a series of continental and marine deposits known as the Hurwitz Group, a series of north-east-trending belts
95:(STZ). During the Neoarchaean and Palaeoproterozoic the STZ played a major role when the Western Churchill Province was first assembled and then reworked. The STZ is a record of Neoarchaean plate tectonics similar in scale to modern orogenic belts.
155:, started to open along the south-east margin of Hearne at 2.075 Ga and had reached a width of 5,000 km (3,100 mi) after a hundred million years. Intra-oceanic arc collision resulted in the Amisk Collage and the
380:"Continental arc magmatism along the southeast Hearne Craton margin in Saskatchewan, Canada: comparison of the 1.92–1.91 Ga Porter Bay Complex and the 1.86–1.85 Ga Wathaman Batholith"
139:
infolded with
Archaean basement in central Hearne has a fold-train with a wavelength of 35–45 km (22–28 mi). In the south-western Hearne continental
267:"Paleoproterozoic basement-cover infolding and thick-skinned thrusting in Hearne domain, Nunavut, Canada: intracratonic response to Trans-Hudson orogen"
513:
463:"Chronology of crustal growth and recycling in the Paleoproterozoic Amisk collage (Flin Flon Belt), Trans-Hudson orogen, Canada"
143:
rocks known as the Kiyuk Group overlie the
Hurwitz Group. Both groups are covered by a thick cover of thrusts and folds.
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337:"North American Central Plains conductivity anomaly within the Trans-hudson orogen in northern Saskatchewan, Canada"
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Jones, A. G.; Craven, J. A.; McNeice, G. W.; Ferguson, I. J.; Boyce, T.; Farquarson, C.; Ellis, R. G. (1993).
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420:"Manikewan: An early proterozoic ocean in central Canada, its igneous history and orogenic closure"
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The Hearne Craton is separated from the Rae Craton by the 2,000 km (1,200 mi)-long
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Palaeomap of North
American and Scandinavian cratons, basement rocks, and orogenic belts
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formed at 2.0–1.7 Ga Hearne and Rae formed a central strip to which the
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Stern, R. A.; Machado, N.; Syme, E. C.; Lucas, S. B.; David, J. (2000).
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Geological map of north-western Canada. Hearne Craton marked with C.
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309:"Lithoprobe leads to new perspectives on continental evolution"
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cratons were accreted. This strip is bounded by a series of
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Aspler, L. B.; Chiarenzelli, J. R.; McNicoll, V. J. (2002).
79:. Before being merged these six cratons formed independent
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10.1130/0091-7613(1993)021<1027:NACPCA>2.3.CO;2
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that cover 150,000 km (58,000 sq mi). A
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51:. Hearne is one of the six Archaean cratons of the
307:Clowes, R. M.; Cook, F. A.; Ludden, J. N. (1998).
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75:) that are bound together by Palaeoproterozoic
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43:in northern Canada which, together with the
151:The Manikewan Ocean, a palaeocean named by
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209:Aspler, Chiarenzelli & McNicoll 2002
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378:Maxeiner, R. O.; Rayner, N. (2011).
467:Canadian Journal of Earth Sciences
126:to the south, the 2.0–1.9 Ga
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404:10.1016/j.precamres.2010.10.005
199:, Abstract; Introduction, p. 1
185:Clowes, Cook & Ludden 1998
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292:10.1016/S0301-9268(02)00029-3
447:10.1016/0301-9268(84)90036-6
211:, Introduction, pp. 332–335
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224:Maxeiner & Rayner 2011
130:and the 1.97–1.84 Ga
226:, Introduction, pp. 93–95
16:Craton in northern Canada
514:Geology of North America
418:Stauffer, M. R. (1984).
122:: the 1.92–1.69 Ga
479:10.1139/cjes-36-11-1807
238:, Introduction, p. 1808
93:Snowbird Tectonic Zone
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30:
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427:Precambrian Research
384:Precambrian Research
271:Precambrian Research
47:, forms the Western
439:1984PreR...25..257S
396:2011PreR..184...93M
356:1993Geo....21.1027J
283:2002PreR..116..331A
509:Historical geology
87:Geological setting
49:Churchill Province
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473:(11): 1807–1827.
350:(11): 1027–1030.
236:Stern et al. 2000
197:Jones et al. 1993
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37:Hearne Craton
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124:Trans-Hudson
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187:, p. 2
163:sandstone.
137:synclinoria
498:Categories
250:, Abstract
167:References
45:Rae Craton
322:(10): 1–7
316:GSA Today
161:Athabasca
157:Flin Flon
100:Laurentia
108:Superior
69:Superior
504:Cratons
435:Bibcode
392:Bibcode
352:Bibcode
344:Geology
279:Bibcode
258:Sources
120:orogens
116:Wyoming
65:Wyoming
484:31 May
452:31 May
409:31 May
369:31 May
326:31 May
298:31 May
132:Wopmey
114:, and
41:craton
423:(PDF)
340:(PDF)
312:(PDF)
172:Notes
104:Slave
98:When
57:Slave
39:is a
486:2016
454:2016
411:2016
371:2016
328:2016
300:2016
112:Sask
73:Nain
35:The
475:doi
443:doi
400:doi
388:184
360:doi
287:doi
275:116
61:Rae
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320:8
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
