Ascent, emplacement and exhumation of the Bergell pluton within the Southern Steep Belt of the Central Alps

Schweizerische Mineralogische und Petrographische Mitteilungen

Volumn 76, Issue 3, 1996, Pages 357-382

  Berger, Alfons ^a,b   Rosenberg, Claudio ^a,c   Schmid, Stefan M ^a  

^a UNIVERSITY OF BASEL   (Switzerland)

^b UNIVERSITY OF HEIDELBERG   (Germany)

^c JUSTUS LIEBIG UNIVERSITY   (Germany)

Author keywords

Bergell (Bregaglia) pluton; Central Alps; Fabric analysis; Magmatism; Pluton emplacement; Southern Steep Belt

Indexed keywords

ALPINE OROGENY; CRUSTAL SHORTENING; DEFORMATION; EXHUMATION; PLUTON EMPLACEMENT;

ITALY, LOMBARDY, BERGELL MASSIF; SWITZERLAND, ALPS, BERGELL MASSIF;

EID: 0030429770     PISSN: 00367699     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (85)

1. BAUDIN, T., MARQUER, D. and PERSOZ, F. (1993): Basement-cover relationships in the Tambo nappe (Central Alps, Switzerland): geometry, structure and kinematics. J. Struct. Geol. 15, 543-553.
2. BERGER, A. (1995): Magmatic and solid state flow during the syntectonic emplacement of the Bergell pluton (southeastern part): field studies and microstructural analysis. Dissertations Geol.-Paläont. Institut Univ. Basel No. 7.
3. BERGER, A. (1996): Geological-tectonic map of the Bergell pluton, Schweiz. Mineral. Petrogr. Mitt., Suplement to volume 76/3.
4. BERGER, A. and GIERÉ, R. (1995): Structural observations at the eastern contact of the Begell pluton. Schweiz. Mineral. Petrogr. Mitt. 78, 241-258.
5. BERGER, A. and STÜNITZ, H. (1996): Deformation mechanisms and reaction of hornblende: examples from the Bergell tonalite (Central Alps). Tectonophysics 257, 149-174.
6. BERTHÉ, D., CHOUKROUNE, P. and GAPAIS, D. (1979): Orientations préferentielles du quartz et orthogneissification progressive en régime cisaillant: l'exemple du cisaillement sudarmoricain. Bull. de Minéralogie 102, 265-272.
7. VON BLANCKENBURG, F., FRÜH-GREEN, G., DIETHELM, K. and STILLE, P. (1991): Nd-, Sr-, O-Isotopen and chemical evidence for a two stage contamination history of mantle magma in the Central-Alpine Bergell intrusion. Contr. Mineral. Petrol. 110, 33-45.
8. VON BLANCKENBURG, F. (1992): Combined high precision chronometry and geochemical tracing using accessory minerals: applied to the Central-Alpine Bergell Intrusion. Chemical Geology 100, 19-40.
9. VON BLANCKENBURG, F. and DAVIES, J.H. (1995): Slab breakoff: A model forsyncollisional magmatism and tectonics in the Alps. Tectonics 14, 120-131.
10. BUCHER-NURMINEN, K. and DROOP, G. (1983): The metamorphic evolution of garnet-cordierite-sillimanite-gneisses of the Gruf-Complex. Contr. Mineral. Petrol. 84, 215-227.
11. DAL PIAZ, G.V. and VENTURELLI, G. (1983): Brevi riflessioni sul magmatismo post-ofiolitico nel quadro dell'evoluzione spazio-temporale delle Alpi. Mem. Soc. Geol. Ital. 26, 5-19.
12. DAVIDSON, C., HOLLISTER, L.S. and SCHMID, S.M. (1992): Role of melt in the formation of a deep-crustal compressive shear zone: The Maclaren glacier metamorphic belt, South Central Alaska. Tectonics 11, 348-359.
13. DAVIDSON, C., SCHMID, S.M. and HOLLISTER, L.S. (1994): Role of melt during deformation in the deep crust. Terra Nova 6, 133-142.
14. DAVIDSON, C. ROSENBERG, C. and SCHMID, S.M. (1996): Synmagmatic folding of the base of the Bergell pluton, Central Alps. Tectonophysics, in press.
15. DEUTSCH, A. (1983): Datierung an Alkaliamphibolen und Stilpnomelan der südlichen Platta-Decke. Eclogae geol. Helv. 76, 295-308.
16. DIETHELM, K.H. (1989): Petrographische und geochemische Untersuchungen an basischen Gesteinen der Bergeller Intrusion. Ph. D. Thesis ETH Zürich 8855.
17. ENGI, M., TODD, C.S. and SCHMUTZ, DR. (1995): Tertiary metamorphic conditions in the eastern Lepontine Alps. Schweiz. Mineral. Petrogr. Mitt., 75, 347-370.
18. FISCH, H.R. (1989): Zur Kinematik der südlichen Steilzone der Zentralalpen, E von Bellinzona. Schweiz. Mineral. Petrogr. Mitt. 69/2, 377-393.
19. FOSSEN, H. and TIKOFF, B. (1993):The deformation matrix for simultaneous simple shearing, pure shearing and volume change, and its application to transpression-transtension tectonics. J. Struct. Geol. 15, 413-422.
20. FROITZHEIM, N., SCHMID, S. and CONTI, P. (1994): Repeated change from crustal shortening to orogen-parallel extension in the Austroalpine units of Graubünden. Eclogae geol. Helv. 87, 559-612.
21. FUMASOLI, M. W. (1974): Geologie des Gebietes nördlich und südlich der Iorio-Tonale-Linie im Westen der Gravedona. Ph. D. Thesis Universität Zürich.
22. GEBAUER, D. (1996): A P-T-t Path for a high pressure ultramafic rock-associations and their felsic countryrocks based on SHRIMP-Dating of magmatic and metamorphic Zircon domains. Example: Alpe Arami (Central Swiss Alps). In: BASU, A. and HART, S.R. (eds): Earth Processes: Reading the Isotopic Code. Geophys. Monogr. Ser. 95, 307-328.
23. GIERÉ, R. (1985): Metasedimente der Suretta-Decke am Ost- und Südostrand der Bergeller Intrusion: Lithostratigraphische Korrelation und Metamorphose. Schweiz. Mineral. Petrogr. Mitt. 65, 57-78.
24. GIGER, M. (1991): Geochronologische und petrographische Studien an Geröllen der Gonfolite-Lombarda-Gruppe (Südschweiz und Norditalien) und ihr Vergleich mit dem alpinen Hinterland. Diss. Univ. Bern.
25. GIGER, M. and HURFORD, A.J. (1989): Tertiary intrusives of the Central Alps: Their Tertiary uplift, erosion, redeposition and burial in the south alpine foreland. Eclogae geol. Helv. 82, 857-866.
26. HAFNER, M. (1993): Strukturgeologische und geochemische Untersuchungen von leukokraten Granit-Gängen und Migmatiten der südlichen Adula am Monte Peschiera (It). Unpublished diploma thesis University Basel.
27. HANNY, R. (1972): Das Migmatitgebiet der Valle Bodengo (östl. Lepontin). Beitr. geol. Karte Schweiz N.F. 145, 109 pp.
28. HANSMANN, W. (1996): Age determinations on the Tertiary Masino-Bregaglia (Bergell) intrusives (Italy, Switzerland): a review. Schweiz. Mineral. Petrogr. Mitt. 76, 421-451.
29. HEITZMANN, P. (1975): Zur Metamorphose und Tektonik im südostlichen Teil der leponlinischen Alpen. Schweiz. Mineral. Petrogr. Mitt. 55, 467-522.
30. HEITZMANN, P. (1986): Retrograde Metamorphose und Verformung in der "Wurzelzone" zwischen Ticino und Mera. Schweiz. Mineral. Petrogr. Mitt. 66, 111-114.
31. HEITZMANN, P. (1987): Calcite mylonites in the Central Alpine "root zone". Tectonophysics 135, 207-215.
32. HOLLISTER, L.S. and CRAWFORD, M.A. (1986): Melt-enhanced deformation: a major tectonic process. Geology 14, 558-561.
33. HUNZIKER, J.C., DESMONS, J. and HURFORD, A.J. (1992): Thirty two years of geochronological work in the Central and Western Alps: a review on seven maps. Mémoires de Géologie (Lausanne) 13, 59 pp.
34. JAEGER, J.C. (1969): Elasticity, Fracture and Flow. Science Paperbacks, Methuen, London, 268 pp.
35. JOHN, B.E. and BLUNDY, J.D. (1993): Emplacement related deformation of granitoid magmas, southern Adamello Massif, Italy. Bull. geol. Soc. Amer. 105, 1517-1541.
36. KÖPPEL, V. and GRÜNEFELDER, M. (1975): Concordant U-Pb ages of monazite and xenolithe from the Central Alps and the timing of the high temperature Alpine metamorphism, a preliminary report. Schweiz. Mineral. Petrogr. Mitt. 55, 129-132.
37. LAUBSCHER, H.P. (1983): The late Alpine (Periadriatic) intrusions and the Insubric Line. Mem. Soc. Geol. Ital. 26, 21-30.
38. LINIGER, M.H. (1992). Der ostalpin-penninische Grenzbereich im Gebiet der nördlichen Margna-Decke (Graubünden, Schweiz). Ph. D. Thesis ETH Zürich Nr. 9769.
39. LISTER, G.S. and DORNSIEPEN, U.F. (1982): Fabric transitions in the Saxony granulite terrain. J. Struct. Geology 4, 81-92.
40. LUCAS, S.B. and ST-ONGE, M. (1995): Syn-tectonic magmatism and the development of compositional layering, Ungava Orogen (northern Quebec, Canada). J. Struct. Geol. 17, 475-491.
41. MARTIN, S., PROSSER, G. and MORTEN, L. (1993): Tectonic and magmatic evolution of sheeted plutonic bodies along the north Giudicarie line (northern Italy). Geol. Rundsch. 82, 51-66.
42. MERLE, O. (1994): Syn-convergence exhumation of the Central Alps. Geodynamica Acta 7/3, 129-138.
43. MERLE, O. and GUILLIER, B. (1989): The building of the Central Swiss Alps: an experimental approach. Tectonophysics 165, 41-56.
44. MILNES, A.G. (1974): Post-nappe folding in the western Lepontine Alps. Eclogae geol. Helv. 67, 333-348.
45. MILNES, A.G. (1978): Structural zones and continental collision. Central Alps. Tectonophysics 47, 369-392.
46. MILNES, A.G. and PFIFFNER, A. (1980): Tectonic evolution of the Central Alps in the cross section St. Gallen - Como. Eclogae geol. Helv. 73, 619-433.
47. MOTICSKA, P. (1970): Petrographie und Strukturanalyse des westlichen Bergeller Massivs und seines Rahmens. Schweiz. Mineral. Petrogr. Mitt. 50, 355-443.
48. NIEVERGELT, P., LINIGER, M., FROITZHEIM, N. and FERREIRO-MAHLMANN, R. (1996): Early to mid Tertiary crustal extension in the Central Alps: The Turba mylonite zone (Eastern Switzerland). Tectonics 15, 329-340.
49. 238U disequilibrium systematics in U-Th-Pb dating: Nuisance or powerful tool in geochronometry? Abstract 6th V.M. Goldschmidt Conference, Heidelberg.
50. PARTZSCH, J.H., FREY, M., KRUSPAN, C., MEYRE, C. and SCHMID, S.M. (1994): Die tektono-metamorphe Entwicklung der mittleren Adula-Decke (Zentralalpen, Schweiz). In: 5. Symposium Tektonik-Strukturgeologie Kristallingeologie Göttingen. Göttinger Arbeiten zur Geologie and Paläontologie SB 1, 124-126.
51. PFIFFNER, M. and WEISS, M. (1994): Strukturelle und petrographische Untersuchungen im Grenzbereich Penninikum-Unterostalpin am Südostrand des Bergell-Plutons (Val Masino, Italien). Schweiz. Mineral. Petrogr. Mitt. 74, 245-264.
52. RAMSAY, J.G. and HUBER, M.I. (1983): The Techniques of Modern Structural Geology Volume 1: Strain analysis. Academic Press, London.
53. REUSSER, E. (1987): Phasenbeziehung im Tonalit der Bergeller Intrusion. Ph. D. Thesis ETH Zürich Nr. 8329.
54. ROBIN, P.F. and CRUDEN, A.R. (1994): Strain and vorticity patterns in ideally ductile transpression zones. J. Struct. Geol. 16, 447-466.
55. RON, H., FREUND, R., GARFUNKEL, Z. and NUR, A. (1983): Block rotation by strike slip faulting: Structural and paleomagnetic evidence. Journal Geoph. Res. 89, 6256-6270.
56. ROSENBERG, C. (1996): Magmatic and solid-state flow during the syntectonic emplacement of the western Bergell pluton: field studies and microstructural analysis. Dissertations Geol.-Paläont. Institut Univ. Basel No. 8.
57. ROSENBERG, C., BERGER, A. and HEILBRONNER, R. (1994a): Deformation of polyphase rocks at different temperature condiditons (I): rheological versus mineralogical phases in the Bergell tonalite. Abstract in Annales Geophysicae 12.
58. ROSENBERG, C., BERGER, A., DAVIDSON, C. and SCHMID, S.M. (1994b): Messa in posto del plutone di Masino-Bregeglia, Alpi Centrali. Atti Ticinesi di Scienze della Terra serie speciale 1, 31-39.
59. ROSENBERG, C. BERGER, A. and SCHMID, S.M. (1995): Observations from the floor of a granitoid pluton: Inferences on the driving force of final emplacement. Geology 23, 443-446.
60. SANDERSON, D.J., and MARCHINI, W.R.D. (1984): Transpression. J. Struct. Geol. 6, 449-458.
61. SCHMID, S.M. and FROITZHEIM, N. (1993): Oblique slip and block rotation along the Engadine line. Eclogae geol. Helv. 86, 569-594.
62. SCHMID, S.M., ZINGG, A. and HANDY, M. (1987): The kinematics of movements along the Insubric Line and the emplacement of the Ivrea Zone. Tectonophysics 135, 47-66.
63. SCHMID, S.M., AEBLI, H.R., HELLER, F. and ZINGG, A. (1989): The role of the Periadriatic line in the tectonic evolution of the Alps. In: COWARD, M.P (ed.): Alpine tectonics. Geol. Soc. London Spec. Publ. 45, 153-171.
64. SCHMID, S.M., RÜCK, P. and SCHREURS, G. (1990): The significance of the Schams nappes for the reconstruction of the paleotetonic and orogenic evolution of the Penninic zone along the NFP 20 East Traverse. In: Deep structure of the Alps (Ed. by ROURE, F. et al.). Mém. Soc. géol. France 156, Soc. Géol. Suisse Mém. 1. Soc. Ital. Vol. spec. 1, 263-287.
65. SCHMID, S.M. PFIFFNER, A. and SCHREURS, G. (1996a): The Penninic Zone. In: Deep structure of the Swiss Alps - Results from PNR 20 (Ed. by HEITZMANN, P.). Birkhäuser AG, Basel.
66. SCHMID, S.M., FROITZHEIM, N., PFIFFNER, A.O., SCHÖNBORN, G. and KISSLING, E. (1996b): Geological-geophysical transect of the Swiss-Italian Alps. Tectonics, in press.
67. SCHMID, S.M., BERGER, A., DAVIDSON, C. GIERÉ, R., HERMANN, J., NIEVERGELT N., PUSCHNIG, A. and ROSENBERG, C. (1994c): The Bergell pluton (Southern Switzerland, Northern Italy): Overview accompanying a geological-tectonic map of the intrusion and surrounding country rocks. Schweiz. Mineral. Petrogr. Mitt. 76/3, 329-355.
68. SCHMIDT, M.W. (1989): Petrography and structural evolution of ophiolitic remnants in the Bellinzona Zone, Southern Steep Belt, Central Alps. Schweiz. Mineral. Petrogr. Mitt. 69, 393-405.
69. SCHMUTZ, H. (1976): Der Mant-Ultramafit-Komplex zwischen Chiavenna und Val Bondesca. Beitr. Geol. Karte Schweiz. N.F. 149, 73 pp.
70. SCHREURS, G. (1996): Structural analysis of the Schams nappes in the Penninic zone. In: The Schams nappes, part 2. Beitr. Geol. Karte Schweiz N.F. 167.
71. SPILLMANN, P. (1993): Die Geologie des penninisch-ostalpinen Grenzbereichs im südlichen Berninagebirge. Ph. D. Thesis ETH Zürich Nr. 10175.
72. STECK, A. and HUNZIKER, J. (1994): The Tertiary structural and thermal evolution of the Central Alps - Compressional and extensional structures in an orogenic belt. Tectonophysics 238, 229-254.
73. TROMMSDORFF, V. (1980): Alpine metamorphism and Alpine intrusions. In: TRÜMPY, R. (ed.): Geology of Switzerland Part A: An Outline of the Geology of Switzerland. Wepf and Co, Basel, 82-86.
74. TROMMSDORFF, V. and EVANS, B.W. (1972): Progressive metamorphism of antigorite schists in the Bergell Tonalite aureole. Am. J. Sci. 272, 423-437.
75. TROMMSDORFF, V. and EVANS, B.W. (1977): Antigorite ophicarbonates; Contact metamorphism in Val Malenco. Contr. Mineral. Petrol. 62, 301-312.
76. TROMMSDORFF, V. and NIEVERGELT, P. (1983): The Bregaglia (Bergell) Iorio Intrusive and its field relations. Mem. Soc. geol. ital. 26, 55-68.
77. VENZO, S., CRESPI, R., SCHIAVINATO, G. and FAGNANI, G. (1971): Carta geologica-petrografica delle Alpi Insubriche Valtellinesi tra la Val Masino e la Val Malenco (Sondrio). In: Mem. Soc. Ital. Sci. Nat. e Museo di Storia Nat. Milano Vol. 19.
78. VOGLER, S. (1980): Art und Ausmass der Deformation in Tonalit, Augengneis von Melirolo und Tonale-Serie am Alpen-S-Rand, östlich Bellinzona. Ph. D. Thesis Universität Bonn.
79. VOGLER, S. and VOLL, G. (1976): Fabrics and Metamorphism from Tonalite, Granitic Augengneiss and Tonale Series at the S-margin of the Swiss Alps, E of Bellinzona. Schweiz. Mineral. Petrogr. Mitt. 56, 635-640.
80. VOGLER, S. and VOLL, G. (1981): Deformation and Metamorphism at the south-Margin of the Alps, East of Bellinzona. Geol. Rundsch. 70, 1232-1262.
81. WEBER, J. (1957): Petrographische und Geologische Untersuchungen des Tonalitzugs von Melirolo-Sorico zwischen Tessintal und Comersee. Schweiz. Mineral. Petrogr. Mitt. 37, 267-397.
82. WENK, H.R. (1973): The structure of the Bergell Alps. Eclogae geol. Helv. 66, 255-291.
83. WENK, H.R. and CORNELIUS, S.B. (1977): Geologischer Atlas der Schweiz, 1:25'000, sheet 70 Sciora, Schweiz. Geol. Kommission, Basel.
84. WERLING, E. (1992): Tonale-, Pejo- und Judicarien-Linie: Kinematik, Mikrostrukturen und Metamorphose von Tektoniten aus räumlich interferierenden, aber verschiedenaltrigen Verwerfungszonen, Ph. D. Thesis ETH Zürich Nr. 9923.
85. WICKHAM, S.M. (1987): The segregation and emplacement of granitic magmas. J. geol. Soc. Lond. 144, 281-297.