Role of chemical processes on shear zone formation: An example from the grimsel metagranodiorite (Aar massif, Central Alps)

Journal of Metamorphic Geology

Volumn 30, Issue 7, 2012, Pages 703-722

  Goncalves, P ^a   Oliot, E ^a,b   Marquer, D ^a   Connolly, J A D ^c  

^a UNIVERSITÉ DE FRANCHE COMTÉ   (France)

^b UMR 7063   (France)

^c ETH ZURICH   (Switzerland)

Author keywords

Aar massif; Central Alps; Chemical potential phase diagram; Metasomatism; Shear zone

Indexed keywords

AAR MASSIF; CENTRAL ALPS; CHEMICAL POTENTIAL GRADIENT; CHEMICAL PROCESS; DUCTILE DEFORMATIONS; DUCTILE SHEAR ZONE; GRANODIORITE; GREENSCHIST; HOST ROCKS; LATERAL PROPAGATION; LOCALIZATION OF DEFORMATION; MASS-BALANCE CALCULATIONS; METAMORPHIC CONDITIONS; METAMORPHIC REACTIONS; METASOMATISM; MGO; MINERAL COMPOSITION; MYLONITES; NUCLEATION STAGES; PHENGITE; RE-EQUILIBRATION; SHEAR ZONE; SHEAR ZONE DEVELOPMENT; STRAIN GRADIENTS; WHITE MICA;

CHEMICAL ENGINEERING; CHEMICAL POTENTIAL; MASS TRANSFER; MICA; MINERALOGY; PHASE DIAGRAMS; SILICATES; SODIUM; STRAIN;

DEFORMATION;

ALPINE ENVIRONMENT; CHEMICAL COMPOSITION; CRYSTALLIZATION; DECOMPRESSION; DEFORMATION MECHANISM; DUCTILE DEFORMATION; GRANODIORITE; GREENSCHIST FACIES; MASS TRANSFER; METASOMATISM; P-T CONDITIONS; PHYLLOSILICATE; SHEAR ZONE;

ALPS; BERN [SWITZERLAND]; CENTRAL ALPS; GRIMSEL; SWITZERLAND;

EID: 84864840354     PISSN: 02634929     EISSN: 15251314     Source Type: Journal    
DOI: 10.1111/j.1525-1314.2012.00991.x     Document Type: Article

References (79)

1. Abrecht, J., 1994. Geologic units of the aar massif and their pre-alpine rock associations - a critical review. Schweizerische Mineralogische und Petrographische Mitteilungen, 74, 5-27.
2. Arancibia, G. & Morata, D., 2005. Compositional variations of syntectonic white-mica in low-grade ignimbritic mylonite. Journal of Metamorphic Geology, 27, 745-767.
3. Barnes, J.D., Selverstone, J. & Sharp, Z.D., 2004. Interactions between serpentinite devolatilization, metasomatism and strike-slip strain localization during deep-crustal shearing in the Eastern Alps. Journal of Metamorphic Geology, 22, 283-300.
4. Baumgartner, L.P. & Olsen, S.N., 1995. A least-squares approach to mass-transport calculations using the isocon method. Economic Geology and the Bulletin of the Society of Economic Geologists, 90, 1261-1270.
5. Berthé, D., Choukroune, P. & Jégouzo, P., 1979. Orthogneiss, mylonite and non coaxial deformation of granites: example of the south armorican shear zone. Journal of Structural Geology, 1, 31-42.
6. Bialek, D., 1999. Chemical changes associated with deformation of granites under greenschist facies conditions: the example of the Zawidów Granodiorite (SE Lusatian Granodiorite Complex, Poland). Tectonophysics, 303, 251-261.
7. Burlini, L. Bruhn, D., 2005. High-strain zones: laboratory perspectives on strain softening during ductile deformation. In: High-Strain Zones: Structure and Physical Properties (eds Bruhn, D. & Burlini, L.), Vol. 245, pp. 1-24. Geological Society, Special Publications, London.
8. 40Ar et Rb-Sr dans les zones de cisaillement: exemples du massif de l'Aar (Massifs cristallins externes) et de la nappe de Suretta (Alpes centrales suisses). Thesis Univeristé de Neuchâtel, 271pp
9. 40Ar step-heating and UV laserprobe analysis of the Alpine Roffna shear zone. Chemical Geology, 197, 3-19.
10. 40Ar and Rb-Sr mica ages in the Aar Massif shear zones (Swiss Alps). Swiss Journal of Geosciences, 101, 269-288.
11. Choukroune, P. & Gapais, D., 1983. Strain pattern in the Aar granite (central Alps) - orthogenesis developed by bulk inhomogeneous flattening. Journal of Structural Geology, 5, 411-418.
12. Coggon, R. & Holland, T.J.B, 2002. Mixing properties of phengitic micas and revised garnet-phengite thermobarometers. Journal of Metamorphic Geology, 20, 683-696.
13. Connolly, J.A.D., 1990. Multivariable phase diagrams: an algotithm based on generalized thermodynamics. American Journal of Science, 290, 666-718.
14. Connolly, J.A.D., 2005. Computation of phase equilibria by linear programming: a tool for geodynamic modelling and its application to subduction zone decarbonation. Earth and Planetary Science Letters, 236, 524-541.
15. De Andrade, V., Vidal, O., Lewin, E., O'Brien, P. & Agard, P., 2006. Quantification of electron microprobe compositional maps of rock thin sections: an optimized method and examples. Journal of Metamorphic Geology, 24, 655-668.
16. Demény, A., Sharp, Z.D. & Pfeiffer, H.R., 1997. Mg-metasomatism and formation conditions of Mg-chlorite-muscovite-quartzphyllites (leucophyllites) of the Eastern Alps (W Hungary) and their relations to Alpine whiteschists. Contribution to Mineralogy and Petrology, 128, 247-260.
17. 40Ar and Rb-Sr data on phengites from the UHP Brossasco-Isasca unit (Dora Maira Massif, Italy): implications for dating white mica. Journal of Petrology, 47, 1439-1465.
18. Dipple, G.M. & Ferry, J.M., 1992. metasomatism and fluid-flow in ductile fault zones. Contributions to Mineralogy and Petrology, 112, 149-164.
19. Duchêne, S., Aissa, R. & Vanderhaeghe, O., 2006. Pressure-temperature-time evolution of metamorphic rocks from naxos (Cyclades, Greece): constraints from thermobarometry and Rb/Sr dating. Geodinamica Acta, 19, 301-321.
20. Fitz Gerald, J. & Stünitz, H., 1993. Deformation of granitoids at low metamorphic grade. I: reactions and grain size reduction. Tectonophysics, 221, 269-297.
21. 16O variations and fluid circulation in a deep shear zone - the case of the alpine ultramylonites from the aar massif central Alps, Switzerland. Chemical Geology, 77, 119-131.
22. Gapais, D., 1989. Shear structures within deformed granites - mechanical and thermal indicators. Geology, 17, 1144-1147.
23. Gapais, D., Bale, P., Choukroune, P., Cobbold, P.R., Mahjoub, Y. & Marquer, D., 1987. Bulk kinematics from shear zone patterns - some field examples. Journal of Structural Geology, 9, 635-646.
24. Glodny, J. & Grauert, B., 2009. Evolution of a hydrothermal fluid-rock interaction system as recorded by Sr isotopes: a case study from the Schwarzwald, SW Germany. Mineralogy and Petrology, 95, 163-178.
25. Groome, W., Johnson, S. & Koons, P., 2006. The effects of porphyroblast growth on the effective viscosity of metapelitic rocks: implications for the strength of the middle crust. Journal of Metamorphic Geology, 24, 389-407.
26. Guermani, A. & Pennacchioni, G., 1998. Brittle precursors of plastic deformation in a granite: an example from the Mont Blanc massif (Helvetic, western Alps). Journal of Structural Geology, 20, 135-148.
27. Gueydan, F., Leroy, Y.M., Jolivet, L. & Agard, P., 2003. Analysis of continental midcrustal strain localization induced by microfracturing and reaction-softening. Journal of Geophysical Research - Solid Earth, 108(B2), 2064.
28. Hippert, J.F., 1998. Breakdown of feldspar, volume gain and lateral mass transfer during mylonitization of granitoid in a low metamorphic grade shear zone. Journal of Structural Geology, 20, 175-193.
29. 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.
30. Holyoke, C.W. & Tullis, J., 2006. The interaction between reaction and deformation: an experimental study using a biotite plus plagioclase plus quartz gneiss. Journal of Metamorphic Geology, 24, 743-762.
31. Ingles, J., Lamouroux, C., Soula, J., Guerrero, N. & Debat, P., 1999. Nucleation of ductile shear zones in a granodiorite under greenschist facies conditions, Neouvielle massif, Pyrenees, France. Journal of Structural Geology, 21, 555-576.
32. Johnson, S.E., Jin, Z., Naus-Thijssen, F.M.J. & Koons, P.O., 2011. Coupled deformation and metamorphism in the roof of a tabular midcrustal igneous complex. Geological Society of America Bulletin, 123, 1016-1032.
33. Keller, L.M., Abart, R., Stünitz, H. & Capitani, C.D., 2004. Deformation, mass transfer and mineral reactions in an eclogite facies shear zone in a polymetamorphic metapelite (Monte Rosa nappe, western Alps). Journal of Metamorphic Geology, 22, 97-118.
34. Knipe, R.J. & Wintsch, R.P., 1985. Heterogeneous deformation, foliation development, and metamorphic processes in a polyphase mylonite. In: Metamorphic reactions. kinetics, textures and deformation (eds Thompson, A.B. & Rubie, D.C.), pp. 180-210. Springer-Verlag, New York.
35. Korzhinskii, D.S., 1970. Theory of metasomatic zoning. Oxford University press, Oxford, 162 pp.
36. Labhart, T.P., 1977. Aarmassiv und Gotthardmassiv. Sammlung geologischer Fuehrer. Gebrüder Borntraeger, Berlin, Stuttgart, 173 pp.
37. Mancktelow, N. & Pennacchioni, G., 2005. The control of precursor brittle fracture and fluid-rock interaction on the development of single and paired ductile shear zones. Journal of Structural Geology, 27, 645-661.
38. Marquer, D., 1987. Transfert de matière et déformation progressive des granitoïdes. Exemples des massifs de l'Aar et du Gotthard (Alpes central suisses), Thesis Université de Rennes, 250 pp.
39. Marquer, D., 1989. Transfert de matière et déformation des granitoïdes. Aspects méthodologiques. Schweizer Mineralogische und Petrographische Mitteilungen, 69, 15-35.
40. Marquer, D. & Burkhard, M., 1992. Fluid circulation, progressive deformation and mass-transfer processes in the upper crust - the example of basement cover relationships in the external crystalline massifs, Switzerland. Journal of Structural Geology, 14, 1047-1057.
41. Marquer, D., Gapais, D. & Capdevila, R., 1985. chemical-changes and mylonitization of a granodiorite within low-grade metamorphism (Aar massif, central Alps). Bulletin de Minéralogie, 108, 209-221.
42. Massone, H.J. & Schreyer, W., 1987. Phengite geobarometry based on the limiting assemblage with k-feldspar, phlogopite, and quartz. Contributions to Mineralogy and Petrology, 96, 212-224.
43. McCaig, A.M., 1984. Fluid-rock interaction in some shear zones from the pyrenees. Journal of Metamorphic Geology, 2, 129-141.
44. Means, W.D., 1995. Shear zones and rock history. Tectonophysics, 247, 157-160.
45. Mitra, G., 1978. Ductile deformation zones and mylonites - mechanical processes involved in deformation of crystalline basement rocks. American Journal of Science, 278, 1057-1084.
46. Montési, L. & Zuber, M., 2002. A unified description of localization for application to large-scale tectonics. Journal of Geophysical Research - Solid Earth, 107(B3), 2045.
47. 5-quartz geobarometer. In: Thermodynamics of Minerals and Melts. Advances in Physical Geochemistry (eds Newton, R.C., Navrotsky, A. & Wood, B. J.), pp. 129-145. Springer-Verlag, New-York.
48. Oliot, E., Goncalves, P. & Marquer, D., 2010. Role of plagioclase and reaction softening in a metagranite shear zone at mid-crustal conditions (Gotthard Massif, Swiss Central Alps). Journal of Metamorphic Geology, 28, 849-871.
49. Pattison, D.R.M., De Capitani, C. & Gaidies, F., 2011. Petrological consequences of variations in metamorphic reaction affinity. Journal of Metamorphic Geology, 29, 953-978.
50. Pennacchioni, G., 2005. Control of the geometry of precursor brittle structures on the type of ductile shear zone in the Adamello tonalites, Southern Alps (Italy). Journal of Structural Geology, 27, 627-644.
51. Pennacchioni, G. & Mancktelow, N.S., 2007. Nucleation and initial growth of a shear zone network within compositionally and structurally heterogeneous granitoids under amphibolite facies conditions. Journal of Structural Geology, 29, 1757-1780.
52. Poirier, J., 1980. Shear localization and shear instability in materials in the ductile field. Journal of Structural Geology, 2, 135.
53. Rossi, M., Rolland, Y., Vidal, O. & Cox, S.F., 2005. Geochemical variations and element transfer during shear zone development and related episyenites at middle crust depths: insights from the Mont-Blanc granite (French-Italian Alps). In: High Strain Zones: Structure and Physical Properties (eds Bruhn, D. & Burlini, L.), pp. 373-396. Geological Society of London, Special Publications, London.
54. Rutter, E.H., 1999. On the relationship between the formation of shear zones and the form of the flow law for rocks undergoing dynamic recrystallization. Tectonophysics, 303, 147-158.
55. Sassier, C., Boulvais, P., Gapais, D., Capdevila, R. & Diot, H., 2006. From granitoid to kyanite-bearing micaschist during fluid-assisted shearing (Ile d'Yeu, France). International Journal of Earth Science, 95, 2-18.
56. Schaltegger, U., 1994. Unraveling the premesozoic history of Aar and Gotthard massifs (Central Alps) by isotopic dating - a review. Schweizerische Mineralogische und Petrographische Mitteilungen, 74, 41-51.
57. Segall, P. & Simpson, C., 1986. Nucleation of ductile shear zones on dilatant fractures. Geology, 14, 56-59.
58. Selverstone, J., Morteani, G. & Staude, J., 1991. Fluid channelling during ductile shearing: transformation of granodiorite into aluminous schist in the Tauern Window, Eastern Alps. Journal of Metamorphic Geology, 9, 419-431.
59. Simpson, C., 1985. Deformation of granitic-rocks across the brittle ductile transition. Journal of Structural Geology, 7, 503-511.
60. Simpson, C. & Wintsch, R.P., 1989. Evidence for deformation-induced K-feldspar replacement by myrmekite. Journal of Metamorphic Geology, 7, 261-275.
61. Steck, A., 1968. Die alpinischen strkturen in den zentralen Aargraniten des westlichen Aarmassivs: the Alpine structures in the central Aar granite of the western part of theAar massif. Eclogae Geologicae Helvetica, 61, 19-48.
62. Steck, A., 1984. Tertiary deformation structures in the Central Alps. Eclogae Geologicae Helvetiae, 77, 55-&.
63. Stunitz, H. & Tullis, J., 2001. Weakening and strain localization produced by syn-deformational reaction of plagioclase. International Journal of Earth Sciences, 90, 136-148.
64. Trotet, F., Vidal, O. & Jolivet, L., 2001. Exhumation of Syros and Sifnos metamorphic rocks (Cyclades, Greece). New constraints on the P-T paths. European Journal of Mineralogy, 13, 901-920.
65. Tullis, J., Yund, R. & Farver, J., 1996. Deformation-enhanced fluid distribution in feldspar aggregates and implications for ductile shear zones. Geology, 24, 63-66.
66. Vidal, O., Parra, T. & Trotet, F., 2001. A thermodynamic model for Fe-Mg aluminous chlorite using data from phase equilibrium experiments and natural pelitic assemblages in the 100 degrees to 600 degrees C, 1 to 25kb range. American Journal of Science, 301, 557-592.
67. 2+mapping at the thin section scale and comparison with XANES mapping: application to a garnet-bearing metapelite from the Sambagawa metamorphic belt (Japan). Journal of Metamorphic Geology, 24, 669-683.
68. Vitale, S. & Mazzoli, S., 2008. Heterogeneous shear zone evolution: the role of shear strain hardening/softening. Journal of Structural Geology, 30, 1383-1395.
69. Waldbaum, D.R. & Thompson, J.B., 1969. Mixing properties of sanidine crystalline solutions: IV. Phase diagrams from equations of state. American Mineralogist, 54, 1274-1298.
70. 2O) for high-pressure metapelites. Journal of Petrology, 47, 385-408.
71. Wei, C.J., Powell, R. & Clarke, G.L., 2004. Calculated phase equilibria for low- and medium-pressure metapelites in the KFMASH and KMnFMASH systems. Journal of Metamorphic Geology, 22, 495-508.
72. White, S. & Knipe, R., 1978. Microstructure and cleavage development in selected slates. Contributions to Mineralogy and Petrology, 66, 165-174.
73. White, R.W., Powell, R. & Holland, T.J.B., 2007. Progress relating to calculation of partial melting equilibria for metapelites. Journal of Metamorphic Geology, 25, 511-527.
74. White, R.W., Powell, R. & Baldwin, J.A., 2008. Calculated phase equilibria involving chemical potentials to investigate the textural evolution of metamorphic rocks. Journal of Metamorphic Geology, 26, 181-198.
75. Wibberley, C., 1999. Are feldspar-to-mica reactions necessarily reaction-softening processes in fault zones? Journal of Structural Geology, 21, 1219-1227.
76. 2O-HCl. Journal of Petrology, 16, 57-79.
77. Wintsch, R.P., Christoffersen, R. & Kronenberg, A.K., 1995. Fluid-rock reaction weakening of fault zones. Journal of Geophysical Research - Solid Earth, 100, 13021-13032.
78. Wintsch, R., Aleinikoff, J. & Keewook, Y., 2005. Foliation development and reaction softening by dissolution and precipitation in the transformation of granodiorite to orthogneiss, Glastonbury Complex, Connecticut, USA. Canadian Mineralogist, 43, 327-347.
79. Yonkee, W.A., Parry, W.T. & Bruhn, R.L., 2003. Relations between progressive deformation and fluid-rock interaction during shear-zone growth in a basement-cored thrust sheet, Sevier orogenic belt, Utah. American Journal of Science, 303, 1-59.