Brittle precursors of plastic deformation in a granite: An example from the Mont Blanc massif (Helvetic, western Alps)

Journal of Structural Geology

Volumn 20, Issue 2-3, 1998, Pages 135-148

  Guermani, A ^a   Pennacchioni, G ^a  

^a Dipartimento di Geologia   (Italy)

Author keywords

[No Author keywords available]

Indexed keywords

BRITTLENESS; GRANITE; LITHOLOGY; METAMORPHIC ROCKS; PLASTIC DEFORMATION; SHEAR DEFORMATION; TECTONICS;

BRITTLE DEFORMATION; SHEAR ZONES;

STRUCTURAL GEOLOGY;

BRITTLE DEFORMATION; DEFORMATION; GRANITE;

FRANCE, ALPS, MONT BLANC;

EID: 0032004292     PISSN: 01918141     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0191-8141(97)00080-1     Document Type: Article

References (52)

1. Andersen, T., Austrheim, H. and Burke, E. A. J. (1991) Fluid-induced retrogression of granulites in the Bergen Arcs, Caledonides of W. Norway: Fluid inclusion evidence from amphibolite-facies shear zones. Lithos 27, 29-42.
2. Antoine, P., Pairis, J.-L. and Pairis, B. (1975) Quelques observation nouvelles sur la structure de la couverture sédimentaire interne du massif du Mont-Blanc, entre le Col du Ferret (frontière italo-suisse) et la Tête des Fours (Savoie, France). Géologie Alpine 51, 5-23.
3. Baggio, P. (1958) II granito del Monte Bianco e le sue mineralizzazioni uranifere. Studi e ricerche della divisione geomineraria CNRN, Roma 1, 1-130.
4. Baggio, P. (1964) Contributo alla conoscenza geologica del versante italiano del Monte Bianco. Atti dell'Istituto Veneto di Scienze Lettere ed Arti 122, 293-325.
5. Baggio, P., Ferrara, G. and Malaroda, R. (1967) Results of some Rb/Sr age determinations of the rocks of the Mont Blanc tunnel. Bollettino della Società Geologica Italiana 86, 193-212.
6. re Jetoula (Massiccio del Monte Bianco). S.T.E.M. Mucchi, Modena.
7. Belliere, J. (1988) On the age of mylonites within the Mont Blanc massif. Geodinamica Acta 2, 13-16.
8. Bertini, G., Marcucci, M., Nevini, R., Passerini, P. and Sguazzoni, G. (1985) Patterns of faulting in the Mont Blanc granite. Tectonophysics 111, 65-106.
9. Bonin, B., Brändlein, P., Bussy, F., Desmons, J., Eggenberger, U., Finger, F., Graf, K., Marro, Ch., Mercolli, I., Oberhänsli, R., Ploquin, A., von Quadt, A., von Raumer, J., Schaltegger, U., Steyrer, H. P., Visonà, D. and Vivier, G. (1993) Late Varisican Magmatic Evolution of the Alpine Basement. In Pre-Mesozoic Geology in the Alps, eds J. F. von Raumer and F. Neubauer, pp. 171-201. Springer, Heidelberg.
10. Borghi, A., Gallo, L. M. and Porro, A. (1987) Osservazioni petrografiche nel settore francese del traforo del Monte Bianco. Bollettino del Museo Regionale di Scienze naturali di Torino 5, 69-96.
11. Boundy, T. M., Fountain, D. M. and Austrheim, H. (1992) Structural development and petrofabric of eclogite facies shear zones, Bergen Arcs, western Norway: implications for deep crustal deformation processes. Journal of Metamorphic Geology 10, 127-146.
12. Bürgmann, R. and Pollard, D. D. (1994) Strain accommodation about strike-slip fault discontinuities in granitic rocks under brittle-to-ductile conditions. Journal of Structural Geology 16, 1655-1674.
13. Bussy, F., Schaltegger, U. and Marro, C. (1389) The age of the Mont-Blanc granite (Western Alps): a heterogeneous system dated by Rb-Sr whole rock determinations on its micrc granular enclaves. Schweizerische mineralogische und petrographische Mitteilungen 69, 3-13.
14. Butler, R. W. H. (1985) The restoration of thrust systems and displacement continuity around the Mont Blanc massif, NW external Alpine thrust belt. Journal of Structural Geology 7, 569-582.
15. Escher, A., Masson, H. and Steck, A. (1993) Nappe geometry in the Western Swiss Alps. Journal of Structural Geology 15, 501-509.
16. Evans, J. P. (1990) Textures, deformation mechanisms, and the role of fluids in the cataclastic deformation of granitic rocks. In Deformation Mechanisms, Rheology and Tectonics, eds R. J. Knipe and E. H. Rutter, pp. 29-39. Geological Society Special Publication 54.
17. Früh-Green, G. L. (1994) Interdependence of deformation, fluid infiltration and reaction progress recorded in eclogitic metagranitoids (Sesia Zone, Western Alps). Journal of Metamorphic Geology 12, 327-343.
18. Gapais, D., Bale, P., Choukroune, P., Cobbold, P. R., Mahjoub, Y. and Marquer, D. (1987) Bulk kinematics from shear zone patterns: some field examples. Journal of Structural Geology 9, 635-646.
19. Gaudemer, Y. and Tapponnier, P. (1987) Ductile and brittle deformations in the northern Snake Range, Nevada. Journal of Structural Geology 9, 159-180.
20. Gibson, R. G. (1990) Nucleation and growth of retrograde shear zones: an example from the Needle Mountains, Colorado, U.S.A. Journal of Structural Geology 12, 339-350.
21. Gibson, R. G. and Gray, D. R. (1985) Ductile-to-brittle transition in shear during thrust sheet emplacement, Southern Appalachian thrust belt. Journal of Structural Geology 7, 513-525.
22. Goodwin, L. B. and Wenk, H.-R. (1995) Development of phyllonite from granodiorite: Mechanisms of grain-size reduction in the Santa Rosa mylonite zone, California. Journal of Structural Geology 17, 689-707.
23. Guermani, A. (1997) La deformazione nei graniti: l'esempio del Monte Bianco. Tesi di dottorato, Padova.
24. Hobbs, B. E., Ord, A. and Teyssier, C. (1986) Earthquakes in the ductile regime? Pure and Applied Geophysics 124, 309-336.
25. Kronenberg, A. K., Segall, P. and Wolf, G. H. (1990) Hydrolytic weakening and penetrative deformation within a natural shear zone. American Geophysical Union Monographic Series 56, 21-36.
26. Leutwein, F., Poty, B., Sonet, J. and Zimmermann, J. L. (1970) Age des cavités à cristaux du granite du Mont Blanc. Comptes Rendus de l'Académie des Sciences Paris 271, 156-58.
27. Macaudiere, J. and Brown, W. L. (1982) Transcrystalline shear fracturing and pseudotachylite generation in a meta-anorthosite (Harris, Scotland). Journal of Structural Geology 4, 395-406.
28. McNulty, B. A. (1995) Pseudotachylyte generated in the semi-brittle and brittle regimes, Bench Canyon shear zone, central Sierra Nevada. Journal of Structural Geology 17, 1507-1521.
29. Marro, C. (1987) Histoire des granitoides du Mont Blanc en Suisse. Bulletin de la Société de Fribourg des Sciences Naturelles 76, 73-128.
30. Means, W. D. (1989) Synkinematic microscopy of transparent polycrystals. Journal of Structural Geology 11, 163-174.
31. Mitra, G. (1984) Brittle to ductile transition due to large strains along the White Rock thrust, Wind River mountains, Wyoming. Journal of Structural Geology 6, 51-61.
32. Passchier, C. W. (1982) Pseudotachylyte and the development of ultramylonite bands in the Saint-Barthélemy Massif, French Pyrenees. Journal of Structural Geology 4, 69-79.
33. Pennacchioni, G. (1996) Progressive eclogitization under fluid-present conditions of pre-Alpine mafic granulites in the Austrolalpine Mt Emilius Klippe (Italian Western Alps). Journal of Structural Geology 18, 549-561.
34. Pennacchioni, G. and Cesare, B. (1997) Ductile-brittle transition in pre-Alpine amphibolite facies mylonites during evolution from water-present to water-deficient conditions (Mont Mary nappe, Italian western Alps). Journal of Metamorphic Geology 15, 777-791.
35. Poty, B. P., Stalder, H. A. and Weisbrod, A. M. (1974) Fluid inclusion studies in quartz from fissures of Western and Central Alps. Schweizerische mineralogische und petrographische Mitteilungen 54, 717-752.
36. von Raumer, J. F. (1967) Kristallization und Gefügebildung im Mont Blanc-Granit. Schweizerische mineralogische und petrographische Mitteilungen 47, 499-579.
37. von Raumer, J. F. (1974) Zur Metamorphose amphibolitischer Gesteine im Altkristallin des Mont Blanc-und Aiguilles-Rouges-Massivs. Schweizerische mineralogische und petrographische Mitteilungen 54, 471-488.
38. von Raumer, J. F., Menot, R. P., Abrecht, J. and Biino, G. (1993) The Pre-Alpine Evolution of the External Massifs. In Pre-Mesozoic Geology in the Alps, eds J. F. von Raumer and F. Neubauer, pp. 221-240. Springer, Heidelberg.
39. Ramsay, J. R. (1980) Shear zone geometry: a review. Journal of Structural Geology 2, 83-99.
40. Rubie, D. C. (1986) The catalysis of mineral reactions by water and restrictions on the presence of aqueous fluid during metamorphism. Mineralogical Magazine 50, 399-415.
41. Rutter, E. H. (1986) On the nomenclature of the mode of failure transition in rocks. Tectonophysics 122, 381-387.
42. Segall, P. and Simpson, C. (1986) Nucleation of ductile shear zones on dilatant fractures. Geology 14, 56-59.
43. Sibson, R. H. (1977) Fault rocks and fault mechanisms. Journal of the Geological Society of London 133, 191-213.
44. Simpson, C. (1986) Fabric development in brittle-to-ductile shear zones. Pure and Applied Geophysics 124, 269-288.
45. Tobisch, O. T., Barton, M. D., Vernon, R. H. and Paterson, S. R. (1991) Fluid-enhanced deformation: transformation of granitoids to banded mylonites, western Sierra Nevada, California, and southeastern Australia. Journal of Structural Geology 13, 1137-1156.
46. Tourigny, G. and Tremblay, A. (1997) Origin and incremental evolution of brittle/ductile shear zones in granitic rocks: natural examples from the southern Abitibi Belt, Canada. Journal of Structural Geology 19, 15-27.
47. Tullis, J. and Yund, R. A. (1977) Experimental deformation of dry Westerly granite. Journal of Geophysical Research 82, 5705-5718.
48. Tullis, J. and Yund, R. A. (1980) Hydrolytic weakening of experimentally deformed Westerly granite and Hale albite rock. Journal of Structural Geology 2, 439-451.
49. Tullis, J., Dell'Angelo, L. and Yund, R. A. (1990) Ductile shear zones from brittle precursors in feldspathic rocks: the role of dynamic recrystallization. In The Brittle-Ductile Transition in Rocks, eds A. Duba, W. Durham, J. Handin and H. Wang, pp. 67-81. American Geophysical Union Geophysical Monograph 56.
50. Watts, M. and Williams, G. D. (1979) Fault rocks as indicators of progressive shear deformation in Guingamp region, Brittany. Journal of Structural Geology 1, 323-332.
51. Venera, Z. and von Raumer, J. (1995) Evolution of deformational structures in the Mont Blanc massif. Terra abstract (Supplement to Terra Nova).
52. Venera, Z. and von Raumer, J. (1996) The Alpine overprint in the Mont Blanc massif: mesoscopic and microstructural evidence. 13th Annual meeting of the Swiss Tectonic Studies Group, Geneva, 1 March 1996.