Formation of eclogite, and reaction during exhumation to mid-crustal levels, Snowbird tectonic zone, western Canadian Shield

Journal of Metamorphic Geology

Volumn 25, Issue 9, 2007, Pages 953-974

  Baldwin, Julie A ^a   Powell, R ^b   Williams, M L ^c   Goncalves, P ^d  

^a UNIVERSITY OF MONTANA   (United States)

^b UNIVERSITY OF MELBOURNE   (Australia)

^c UNIVERSITY OF MASSACHUSETTS   (United States)

^d UNIVERSITÉ DE FRANCHE COMTÉ   (France)

Author keywords

Chemical potential; Kyanite eclogite; Reaction textures; Sapphirine; Saskatchewan

Indexed keywords

ECLOGITE; EXHUMATION; METAMORPHISM; ORTHOPYROXENE; P-T CONDITIONS; PLAGIOCLASE; SAPPHIRINE;

CANADA; CANADIAN SHIELD; NORTH AMERICA; SASKATCHEWAN;

EID: 34447645038     PISSN: 02634929     EISSN: 15251314     Source Type: Journal    
DOI: 10.1111/j.1525-1314.2007.00737.x     Document Type: Article

References (49)

1. Baldwin, J. A., Bowring, S. A. & Williams, M. L., 2003. Petrological and geochronological constraints on high pressure, high temperature metamorphism in the Snowbird tectonic zone, Canada. Journal of Metamorphic Geology, 21, 81-98.
2. Baldwin, J. A., Bowring, S. A., Williams, M. L. & 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, 147, 528-548.
3. Baldwin, J. A., Bowring, S. A., Williams, M. L. & Mahan, K. H., 2006. Geochronological constraints on the evolution of high-pressure felsic granulites from an integrated electron microprobe and id-tims geochemical study. Lithos, 88, 173-200.
4. Berman, R. G., Ryan, J. J., Tella, S. et al., 2000. The Case of Multiple Metamorphic Events in the Western Churchill Province: Evidence from Linked Thermobarometric Data, and Jury Deliberations. Geological Association of Canada -Mineralogical Association of Canada Annual Meeting, Calgary, Alberta. Abstracts on CD-ROM.
5. Carson, C. J. & Powell, R., 1997. Garnet-orthopyroxene geothermometry and geobarometry: Error propagation and equilibration effects. Journal of Metamorphic Geology, 15, 679-686.
6. Carswell, D. A., Möller, C. & O'Brien, P. J., 1989. Origin of sapphirine-plagioclase symplectites in metabasites from Mitterbachgraben Dunkelsteinerwald granulite complex, Lower Austria. European Journal of Mineralogy, 1, 455-466.
7. Cherniak, D. J., Manchester, J. & Watson, E. B., 2007. Zr and Hf diffusion in rutile. Earth and Planetary Science Letters, doi:, (in press).
8. Dale, J., Powell, R., White, R. W., Elmer, F. L. & Holland, T. J. B., 2005. A thermodynamic model for Ca-Na clinoamphiboles in Na2O-CaO-FeO-MgO-Al2O3-SiO2-H2O-O for petrological calculations. Journal of Metamorphic Geology, 23, 771-791.
9. Ferry, J. M. & Watson, E. B., 2007. New thermodynamic models and revised calibrations for the Ti-in-zircon and Zr-in-rutile thermometers. Contributions to Mineralogy and Petrology, doi:, (in press).
10. Flowers, R. M., Bowring, S. A. & Williams, M. L., 2006a. Timescales and significance of high-pressure, high-temperature metamorphism and mafic dike anatexis, Snowbird tectonic zone, Canada. Contributions to Mineralogy and Petrology, 151, 558-581.
11. Flowers, R. M., Mahan, K. H., Bowring, S. A., Williams, M. L., Pringle, M. S. & Hodges, K. V., 2006b. Multistage exhumation and juxtaposition of lower continental crust in the western Canadian Shield: linking high-resolution U-Pb and 40Ar/39Ar thermochronometry with pressure-temperature-deformation paths. Tectonics, 25, TC4003, doi:.
12. Goodacre, A. K., Grieve, R. A. F., Halpenny, J. F. & Sharpton, V. L., 1987. Horizontal Gradient of the Bouguer Gravity Anomaly Map of Canada, Canadian Geophysical Atlas, Map 5. Geological Survey of Canada, Ottawa.
13. Hanmer, S., 1994. Geology, East Athabasca mylonite triangle, Stony Rapids area, northern Saskatchewan. In: 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, 1-92.
15. Hanmer, S., Parrish, R., Williams, M. & Kopf, C., 1994. Striding-Athabasca mylonite zone: Complex Archean deep-crustal deformation in the East Athabasca mylonite triangle, northern Saskatchewan. Canadian Journal of Earth Sciences, 31, 1287-1300.
16. Hanmer, S., Williams, M. & Kopf, C., 1995a. Modest movements, spectacular fabrics in an intracontinental deep-crustal strike-slip fault: Striding-Athabasca mylonite zone, NW Canadian Shield. Journal of Structural Geology, 17, 493-507.
17. Hanmer, S., Williams, M. & Kopf, C., 1995b. Striding-Athabasca mylonite zone: Implications for the Archean and Early Proterozoic tectonics of the western Canadian Shield. Canadian Journal of Earth Sciences, 32, 178-196.
18. Hoffman, P. F., 1988. United Plates of America, the birth of a craton: Early Proterozoic assembly and the growth of Laurentia. Annual Reviews of Earth and Planetary Science Letters, 16, 543-603.
19. Hoffman, P. F., 1989. Precambrian geology and tectonic history of North America. In: The Geology of North America - An Overview (eds Bally, A.W. & Palmer, A.R.), pp. 447-512. Geological Society of America, Boulder, CO.
20. Holland, T. J. B., 1980. The reaction albite = jadeite + quartz determined experimentally in the range 600-1200 °C. American Mineralogist, 65, 129-134.
21. Holland, T. J. B. & Powell, R., 1996. Thermodynamics of order-disorder in minerals 2: Symmetric formalism applied to solid solutions. American Mineralogist, 81, 1425-1437.
22. Holland, T. J. B. & Powell, R., 1998. An internally-consistent thermodynamic data set for phases of petrological interest. Journal of Metamorphic Geology, 16, 309-343.
23. Holland, T. J. B. & Powell, R., 2003. Activity-composition relations for phases in petrological calculations: An asymmetric multicomponent formulation. Contributions to Mineralogy and Petrology, 145, 492-501.
24. Johansson, L. & Möller, C., 1986. Formation of sapphirine during retrogression of a basic high-pressure granulite, Roan, Western Gneiss Region, Norway. Contributions to Mineralogy and Petrology, 94, 29-41.
25. Korzhinskii, D. S., 1957. Physico-Chemical Basis for the Analysis of the Paragenesis of Minerals. Nauka, Moscow.
26. Krogh Ravna, E. J., 2000. The garnet-clinopyroxene Fe2+-Mg geothermometer: An updated calibration. Journal of Metamorphic Geology, 18, 211-219.
27. Krogh Ravna, E. J. & Terry, M. P., 2004. Geothermobarometry of UHP and HP eclogites and schists - an evaluation of equilibria among garnet-clinopyroxene- kyanite-phengite-coesite/quartz. Journal of Metamorphic Geology, 22, 579-592.
28. Liati, A. & Seidel, E., 1994. Sapphirine and högbomite in overprinted kyanite-eclogites of central Rhodope, N. Greece: First evidence of granulite facies metamorphism. European Journal of Mineralogy, 6, 733-738.
29. Mahan, K. H. & Williams, M. L., 2005. Reconstruction of a large deep-crustal terrane: Implications for the Snowbird tectonic zone and early growth of Laurentia. Geology, 33, 385-388.
30. Mahan, K. H., Williams, M. L. & 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, 40, 1085-1110.
31. Mahan, K. H., Goncalves, P., Williams, M. L. & Jercinovic, M. J., 2006a. Dating metamorphic reactions and fluid flow: Application to exhumation of high-P granulites in a crustal scale shear zone, western Canadian Shield. Journal of Metamorphic Geology, 24, 193-217.
32. Mahan, K. H., Williams, M. L., Flowers, R. M., Jercinovic, M. J., Baldwin, J. A. & Bowring, S. A., 2006b. Geochronological constraints on the Legs Lake shear zone with implications for regional exhumation of lower continental crust, western Churchill Province, Canadian Shield. Contributions to Mineralogy and Petrology, 152, 223-242.
33. Möller, C., 1999. Sapphirine in SW Sweden: A record of Svecnorwegian (-Grenvillian) late-orogenic tectonic exhumation. Journal of Metamorphic Geology, 17, 127-141.
34. O'Brien, P. J., 1992. The formation of sapphirine and orthopyroxene during overprinting of Mariánské Lázne Complex eclogites. Zentralblatt für Geologie und Paläontologie (7/8), 827-836.
35. O'Brien, P. J. & Rötzler, J., 2003. High-pressure granulites: formation, recovery of peak conditions and implications for tectonics. Journal of Metamorphic Geology, 21, 3-20.
36. Powell, R., 1985. Regression diagnostics and robust regression in geothermometer/geobarometer calibration: The garnet-clinopyroxene geothermometer revisited. Journal of Metamorphic Geology, 3, 231-243.
37. Powell, R., Holland, T. J. B. & Worley, B., 1998. Calculating phase diagrams involving solid solutions via non-linear equations, with examples using THERMOCALC. Journal of Metamorphic Geology, 6, 173-204.
38. Powell, R., Guiraud, M. & White, R. W., 2005. Truth and beauty in metamorphic phase-equilibria: Conjugate variables and phase diagrams. Canadian Mineralogist, 43, 21-33.
39. 3+ and changes in the mineral chemistry of omphacite at ultrahigh pressures. Contributions to Mineralogy and Petrology, 147, 305-318.
40. Rötzler, J. & Romer, R. L., 2001. P-T-t evolution of ultrahigh-temperature granulites from the Saxon Granulite Massif, Germany. Part I: Petrology. Journal of Petrology, 42, 1995-2013.
41. Snoeyenbos, D. R., Williams, M. L. & Hanmer, S., 1995. Archean high-pressure metamorphism in the western Canadian Shield. European Journal of Mineralogy, 7, 1251-1272.
42. Stipska, P. & Powell, R., 2005a. Constraining the P-T path of a MORB-type eclogite using pseudosections, garnet zoning and garnet-clinopyroxene thermometry: An example from the Bohemian Massif. Journal of Metamorphic Geology, 23, 725-743.
43. Stipska, P. & Powell, R., 2005b. Does ternary feldspar constrain the metamorphic conditions of high-grade meta-igneous rocks? Evidence from orthopyroxene gneisses, Bohemian Massif. Journal of Metamorphic Geology, 23, 627-647.
44. Tomkins, H. S., Powell, R. & Ellis, D. J., 2007. The pressure dependence of the zirconium-in-rutile thermometer. Journal of Metamorphic Geology, 25, 703-713.
45. Watson, E. B. & Harrison, T. M., 2005. Zircon thermometer reveals minimum melting conditions on earliest earth. Science, 308, 841-844.
46. Watson, E. B., Wark, D. A. & Thomas, J. B., 2006. Crystallization thermometers for zircon and rutile. Contributions to Mineralogy and Petrology, 151, 413-433.
47. 2O (NCKFMASH). Journal of Metamorphic Geology, 19, 139-153.
48. Williams, M. L., Hanmer, S., Kopf, C. & 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, 100, 15717-15734.
49. Williams, M. L., Melis, E. A., Kopf, C. & Hanmer, S., 2000. Microstructural tectonometamorphic processes and the development of gneissic layering: A mechanism for metamorphic segregation. Journal of Metamorphic Geology, 18, 41-57.