Reconstruction of a large deep-crustal terrane: Implications for the Snowbird tectonic zone and early growth of Laurentia

Geology

Volumn 33, Issue 5, 2005, Pages 385-388

  Mahan, K H ^a   Williams, M L ^a  

^a UNIVERSITY OF MASSACHUSETTS   (United States)

Author keywords

Canadian shield; Deep crust; Exhumation; Intracontinental; Shear zones

Indexed keywords

DEEP-CRUSTAL TERRANES; PALEOPROTOZOIC CONTINENTAL SUTURE; SNOWBIRD TECTONIC ZONES; STRIKE-SLIP SHEAR ZONES;

GRANULAR MATERIALS; ROCK MECHANICS; ROCKS; SHEARING;

TECTONICS;

CONTINENTAL COLLISION; CRUSTAL EVOLUTION; LAURENTIA; PROTEROZOIC; STRIKE-SLIP FAULT; TERRANE; THRUST;

CANADA; CANADIAN SHIELD; CHURCHILL PROVINCE; NORTH AMERICA; WESTERN HEMISPHERE; WORLD;

LAURENTIA;

EID: 18944379906     PISSN: 00917613     EISSN: None     Source Type: Journal    
DOI: 10.1130/G21273.1     Document Type: Article

References (32)

1. Baldwin, J.A., Bowring, S.A., and Williams, M.L., 2003, Petrologic and geochronologic constraints on high-pressure, high-temperature metamorphism in the Snowbird tectonic zone, Canada: Journal of Metamorphic Geology, v. 21, p. 1-19.
2. Baldwin, J.A., Bowring, S.A., Williams, M.L., and Williams, I.S., 2004, Eclogites of the Snowbird tectonic zone: Petrological and U-Pb geochronological evidence for Paleoproterozoic high-pressure metamorphism in the western Canadian Shield: Contributions to Mineralogy and Petrology, v. 147, p. 528-548.
3. Berman, R., Ryan, J.J., Tella, S., Sanborn-Barrie, M., Stern, R., Aspler, L.B., Hanmer, S., and Davis, W.J., 2000, The case of multiple metamorphic events in the western Churchill province: Evidence from linked thermobarometric and in-situ SHRIMP data, and jury deliberations: Geological Association of Canada-Mineralogical Association of Canada Abstracts, v. 25, p. 836.
4. Bickford, M.E., Collerson, K.D., and Lewry, J.F., Van Schmus, W.R., and Chiarenzelli, J.R., 1990, Proterozoic collisional tectonism in the Trans-Hudson orogen, Saskatchewan: Geology, v. 18, p. 14-18.
5. Biermeier, C., Stuwe, K., Foster, D.A., and Finger, F., 2003, Thermal evolution of the Redbank thrust system, central Australia: Geochronological and phase-equilibrium constraints: Tectonics, v. 22, p. 1-23.
6. Burchfiel, B.C., and Wang, E., 2003, Northwest-trending, middle Cenozoic, left-lateral faults in southern Yunnan, China, and their tectonic significance: Journal of Structural Geology, v. 25, p. 781-792.
7. Card, C.D., 2001, Basement rocks to the western Athabasca basin in Saskatchewan: Saskatchewan Geological Survey Summary of Investigations 2001, v. 2, p. 321-333.
8. Card, C.D., 2002, New investigations of basement to the western Athabasca basin: Saskatchewan Geological Survey Summary of Investigations 2002, v. 2, 17 p.
9. Cousens, B.L., Aspler, L.B., Chiarenzelli, J.R., Donaldson, J.A., Sandeman, H., Peterson, T.D., and LeCheminant, A.N., 2001, Enriched Archean lithospheric mantle beneath western Churchill province tapped during Paleoproterozoic orogenesis: Geology, v. 29, p. 827-830.
10. Ding, G., Chen, J., Tian, Q., Shen, X., Xing, C., and Wei, K., 2004, Active faults and magnitudes of left-lateral displacement along the northern margin of the Tibetan Plateau: Tectonophysics, v. 380, p. 243-260.
11. Eade, K.E., 1970, Geology, Ennadai Lake, District of Keewatin: Geological Survey of Canada Map 24-1970, scale 1:250,000.
12. Flowers, R.M., Baldwin, J.A., and Bowring, S.A., 2002, Age and significance of the Proterozoic Chipman dike swarm, Snowbird tectonic zone, northern Saskatchewan: Geological Association of Canada-Mineralogical Association of Canada Abstracts, v. 27, p. 35.
13. Hanmer, S., 1994, Geology, East Athabasca mylonite triangle, Saskatchewan: Geological Survey of Canada Map 1859A, scale 1:100,000.
14. Hanmer, S., 1997, Geology of the Striding-Athabasca mylonite zone, northern Saskatchewan and southeastern District of Mackenzie, Northwest Territories: Geological Survey of Canada Bulletin 501, 92 p.
15. Hanmer, S., Williams, M.L., and Kopf, C., 1995, Striding-Athabasca mylonite zone: Implications for Archean and Early Proterozoic tectonics of the western Canadian Shield: Canadian Journal of Earth Sciences, v. 32, p. 178-196.
16. Hoffman, P.F., 1988, United plates of America, the birth of a craton: Early Proterozoic assembly and growth of Laurentia: Annual Review of Earth and Planetary Sciences, v. 16, p. 543-603.
17. Lewry, J.E, and Sibbald, T.I.I., 1980, Thermotectonic evolution of the Churchill province in northern Saskatchewan: Tectonophysics, v. 68, p. 45-82.
18. Mahan, K.H., Williams, M.L., and Baldwin, J.A., 2003, Contractional uplift of deep crustal rocks along the Legs Lake shear zone, western Churchill province, Canadian Shield: Canadian Journal of Earth Sciences, v. 40, p. 1085-1110.
19. Percival, J.A., and West, G.F., 1994, The Kapuskasing uplift: A geological and geophysical synthesis: Canadian Journal of Earth Sciences, v. 31, p. 1256-1286.
20. Portella, P., and Annesley, I.R., 2000, Paleoproterozoic thermotectonic evolution of the eastern sub-Athabasca basement, northern Saskatchewan: Integrated geophysical and geological data: Saskatchewan Geological Survey Summary of Investigations 2000, v. 2, p. 191-200.
21. Rayner, N.M., Stern, R.A., and Rainbird, R.H., 2003, SHRIMP U-Pb detrital zircon geochronology of Athabasca Group sandstones, northern Saskatchewan and Alberta: Geological Survey of Canada Current Research, v. 2003-F2, 22 p.
22. Relf, C., and Hanmer, S., 2000, A speculative and critical summary of the current state of knowledge of the western Churchill province: A NATMAP perspective: Geological Association of Canada-Mineralogical Association of Canada Abstracts, v. 25, p. 857.
23. Ross, G.M., Eaton, D.W., Boerner, D.E., and Miles, W., 2000, Tectonic entrapment and its role in the evolution of continental lithosphere: An example from the Precambrian of western Canada: Tectonics, v. 19, p. 116-134.
24. Sanborn-Barrie, M., Carr, S.D., and Theriault, R., 2001, Geochronological constraints on metamorphism, magmatism and exhumation of deep-crustal rocks of the Kramanituar Complex, with implications for the Paleoproterozoic evolution of the Archean western Churchill province, Canada: Contributions to Mineralogy and Petrology, v. 141, p. 592-612.
25. Slimmon, W.L., 1989, Compilation bedrock geology map series, Fond-du-Lac NTS Area 74O: Saskatchewan Energy and Mines Map 247A, scale 1:250,000.
26. Snoeyenbos, D.R., Williams, M.L., and Hanmer, S., 1995, An Archean eclogite facies terrane in the western Canadian Shield: European Journal of Mineralogy, v. 7, p. 1251-1272.
27. Teyssier, C., 1985, A crustal thrust system in an intracratonic tectonic environment: Journal of Structural Geology, v. 7, p. 689-700.
28. Williams, M.L., and Hanmer, S., 2005, Structural and metamorphic processes in the lower crust: Evidence from the East Athabasca mylonite triangle, Canada, a deep-crustal isobarically cooled terrane, in Brown, M., and Rushmer, T, eds., Evolution and differentiation of the continental crust: Cambridge, Cambridge University Press (in press).
29. Williams, M.L., and Jercinovic, M.J., 2002, Microprobe monazite geochronology: Putting absolute time into microstructural analysis: Journal of Structural Geology, v. 24, p. 1013-1028.
30. Williams, M.L., Hanmer, S., Kopf, C., and Darrach, M., 1995, Syntectonic generation and segregation of tonalitic melts from amphibolite dikes in the lower crust, Striding-Athabasca mylonite zone, northern Saskatchewan: Journal of Geophysical Research, v. 100, p. 15,717-15,734.
31. Williams, M.L., Jercinovic, M.J., and Terry, M.P., 1999, Age mapping and dating of monazite on the electron microprobe: Deconvoluting multi-stage tectonic histories: Geology, v. 27, p. 1023-1026.
32. Williams, M.L., Melis, E.A., Kopf, C., and Hanmer, S., 2000, Microstructural tectonometamorphic processes and the development of gneissic layering: A mechanism for metamorphic segregation: Journal of Metamorphic Geology, v. 18, p. 41-57.